/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:25:23,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:25:23,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:25:23,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:25:23,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:25:23,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:25:23,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:25:23,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:25:23,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:25:23,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:25:23,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:25:23,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:25:23,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:25:23,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:25:23,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:25:23,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:25:23,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:25:23,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:25:23,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:25:23,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:25:23,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:25:23,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:25:23,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:25:23,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:25:23,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:25:23,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:25:23,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:25:23,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:25:23,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:25:23,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:25:23,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:25:23,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:25:23,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:25:23,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:25:23,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:25:23,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:25:23,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:25:23,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:25:23,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:25:23,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:25:23,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:25:23,808 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:25:23,847 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:25:23,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:25:23,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:25:23,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:25:23,853 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:25:23,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:25:23,854 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:25:23,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:25:23,856 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:25:23,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:25:23,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:25:23,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:25:23,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:25:23,860 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:25:23,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:25:23,860 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:25:23,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:25:23,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:25:23,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:25:23,861 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:25:23,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:25:23,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:25:23,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:25:23,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:25:23,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:25:23,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:25:23,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:25:23,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:25:23,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:25:23,864 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:25:24,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:25:24,223 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:25:24,227 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:25:24,230 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:25:24,231 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:25:24,232 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-12 19:25:24,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfa2f1e5d/6309bae79c2b40459fc52674ee66b8a3/FLAG7db72c8d7 [2020-10-12 19:25:24,999 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:25:24,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-12 19:25:25,027 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfa2f1e5d/6309bae79c2b40459fc52674ee66b8a3/FLAG7db72c8d7 [2020-10-12 19:25:25,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfa2f1e5d/6309bae79c2b40459fc52674ee66b8a3 [2020-10-12 19:25:25,155 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:25:25,157 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:25:25,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:25:25,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:25:25,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:25:25,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:25:25" (1/1) ... [2020-10-12 19:25:25,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@510a549d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:25:25, skipping insertion in model container [2020-10-12 19:25:25,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:25:25" (1/1) ... [2020-10-12 19:25:25,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:25:25,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:25:26,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:25:26,530 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:25:27,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:25:27,395 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:25:27,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:25:27 WrapperNode [2020-10-12 19:25:27,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:25:27,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:25:27,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:25:27,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:25:27,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:25:27" (1/1) ... [2020-10-12 19:25:27,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:25:27" (1/1) ... [2020-10-12 19:25:27,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:25:27" (1/1) ... [2020-10-12 19:25:27,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:25:27" (1/1) ... [2020-10-12 19:25:27,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:25:27" (1/1) ... [2020-10-12 19:25:27,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:25:27" (1/1) ... [2020-10-12 19:25:27,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:25:27" (1/1) ... [2020-10-12 19:25:27,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:25:27,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:25:27,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:25:27,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:25:27,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:25:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:25:27,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:25:27,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:25:27,697 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:25:27,697 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:25:27,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:25:27,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:25:27,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:25:27,698 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:25:27,698 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:25:27,698 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:25:27,699 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:25:27,699 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:25:27,699 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:25:27,699 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:25:27,699 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:25:27,700 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:25:27,700 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:25:27,700 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:25:27,700 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:25:27,701 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:25:27,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:25:27,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:25:31,195 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:25:31,195 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:25:31,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:25:31 BoogieIcfgContainer [2020-10-12 19:25:31,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:25:31,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:25:31,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:25:31,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:25:31,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:25:25" (1/3) ... [2020-10-12 19:25:31,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31069671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:25:31, skipping insertion in model container [2020-10-12 19:25:31,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:25:27" (2/3) ... [2020-10-12 19:25:31,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31069671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:25:31, skipping insertion in model container [2020-10-12 19:25:31,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:25:31" (3/3) ... [2020-10-12 19:25:31,225 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-12 19:25:31,236 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:25:31,250 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:25:31,265 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:25:31,299 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:25:31,299 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:25:31,299 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:25:31,300 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:25:31,300 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:25:31,300 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:25:31,300 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:25:31,300 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:25:31,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states. [2020-10-12 19:25:31,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-12 19:25:31,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:25:31,401 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:25:31,401 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:25:31,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:25:31,409 INFO L82 PathProgramCache]: Analyzing trace with hash -713366920, now seen corresponding path program 1 times [2020-10-12 19:25:31,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:25:31,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970898412] [2020-10-12 19:25:31,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:25:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:32,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:33,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:33,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:34,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:34,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:34,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:35,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:37,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:37,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:37,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 366 [2020-10-12 19:25:37,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:25:37,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5159 [2020-10-12 19:25:37,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:37,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:25:37,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:25:37,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-12 19:25:37,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 19:25:38,875 WARN L193 SmtUtils]: Spent 904.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-12 19:25:38,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:25:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:38,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:38,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:38,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:25:38,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:25:38,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 19:25:38,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:38,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:25:38,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:25:38,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:25:38,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:25:39,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:25:39,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970898412] [2020-10-12 19:25:39,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:25:39,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:25:39,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989933713] [2020-10-12 19:25:39,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:25:39,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:25:39,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:25:39,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:25:39,588 INFO L87 Difference]: Start difference. First operand 1439 states. Second operand 5 states. [2020-10-12 19:25:55,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:25:55,943 INFO L93 Difference]: Finished difference Result 4195 states and 7476 transitions. [2020-10-12 19:25:55,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:25:55,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 360 [2020-10-12 19:25:55,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:25:55,998 INFO L225 Difference]: With dead ends: 4195 [2020-10-12 19:25:55,998 INFO L226 Difference]: Without dead ends: 2829 [2020-10-12 19:25:56,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:25:56,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2829 states. [2020-10-12 19:25:56,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2829 to 2827. [2020-10-12 19:25:56,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2827 states. [2020-10-12 19:25:56,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2827 states to 2827 states and 4752 transitions. [2020-10-12 19:25:56,312 INFO L78 Accepts]: Start accepts. Automaton has 2827 states and 4752 transitions. Word has length 360 [2020-10-12 19:25:56,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:25:56,318 INFO L479 AbstractCegarLoop]: Abstraction has 2827 states and 4752 transitions. [2020-10-12 19:25:56,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:25:56,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2827 states and 4752 transitions. [2020-10-12 19:25:56,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-12 19:25:56,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:25:56,336 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:25:56,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:25:56,337 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:25:56,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:25:56,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1916835339, now seen corresponding path program 1 times [2020-10-12 19:25:56,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:25:56,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523960985] [2020-10-12 19:25:56,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:25:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:56,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:57,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:57,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:57,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:57,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:58,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:58,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:59,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:00,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:00,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:00,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:01,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:01,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:01,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-12 19:26:01,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:26:01,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-12 19:26:01,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:01,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:26:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:26:01,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-12 19:26:01,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 19:26:02,891 WARN L193 SmtUtils]: Spent 982.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-12 19:26:02,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:26:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:02,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:02,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:02,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:26:02,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:26:02,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 19:26:02,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:02,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:26:02,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:26:02,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:26:02,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:26:03,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:26:03,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523960985] [2020-10-12 19:26:03,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:26:03,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:26:03,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730674732] [2020-10-12 19:26:03,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:26:03,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:26:03,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:26:03,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:26:03,412 INFO L87 Difference]: Start difference. First operand 2827 states and 4752 transitions. Second operand 5 states. [2020-10-12 19:26:17,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:26:17,137 INFO L93 Difference]: Finished difference Result 8387 states and 14103 transitions. [2020-10-12 19:26:17,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:26:17,139 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 362 [2020-10-12 19:26:17,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:26:17,168 INFO L225 Difference]: With dead ends: 8387 [2020-10-12 19:26:17,168 INFO L226 Difference]: Without dead ends: 5578 [2020-10-12 19:26:17,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:26:17,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5578 states. [2020-10-12 19:26:17,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5578 to 5576. [2020-10-12 19:26:17,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5576 states. [2020-10-12 19:26:17,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5576 states to 5576 states and 9335 transitions. [2020-10-12 19:26:17,559 INFO L78 Accepts]: Start accepts. Automaton has 5576 states and 9335 transitions. Word has length 362 [2020-10-12 19:26:17,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:26:17,561 INFO L479 AbstractCegarLoop]: Abstraction has 5576 states and 9335 transitions. [2020-10-12 19:26:17,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:26:17,561 INFO L276 IsEmpty]: Start isEmpty. Operand 5576 states and 9335 transitions. [2020-10-12 19:26:17,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-12 19:26:17,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:26:17,580 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:26:17,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:26:17,581 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:26:17,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:26:17,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1341653167, now seen corresponding path program 1 times [2020-10-12 19:26:17,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:26:17,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603808609] [2020-10-12 19:26:17,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:26:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:18,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:18,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:18,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:18,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:18,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:19,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:19,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:20,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:21,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:22,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:22,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:22,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:22,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-12 19:26:22,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:26:22,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-12 19:26:22,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:22,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:26:22,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:26:22,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-12 19:26:22,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:23,867 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-12 19:26:23,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:26:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:23,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:23,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:23,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:26:23,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:26:23,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 19:26:23,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:23,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:26:23,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:26:23,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:26:23,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:24,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:26:24,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603808609] [2020-10-12 19:26:24,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:26:24,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:26:24,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010366185] [2020-10-12 19:26:24,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:26:24,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:26:24,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:26:24,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:26:24,353 INFO L87 Difference]: Start difference. First operand 5576 states and 9335 transitions. Second operand 5 states. [2020-10-12 19:26:35,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:26:35,363 INFO L93 Difference]: Finished difference Result 16403 states and 27445 transitions. [2020-10-12 19:26:35,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:26:35,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 366 [2020-10-12 19:26:35,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:26:35,414 INFO L225 Difference]: With dead ends: 16403 [2020-10-12 19:26:35,414 INFO L226 Difference]: Without dead ends: 10945 [2020-10-12 19:26:35,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:26:35,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10945 states. [2020-10-12 19:26:35,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10945 to 10943. [2020-10-12 19:26:35,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10943 states. [2020-10-12 19:26:36,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10943 states to 10943 states and 18231 transitions. [2020-10-12 19:26:36,020 INFO L78 Accepts]: Start accepts. Automaton has 10943 states and 18231 transitions. Word has length 366 [2020-10-12 19:26:36,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:26:36,026 INFO L479 AbstractCegarLoop]: Abstraction has 10943 states and 18231 transitions. [2020-10-12 19:26:36,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:26:36,026 INFO L276 IsEmpty]: Start isEmpty. Operand 10943 states and 18231 transitions. [2020-10-12 19:26:36,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-12 19:26:36,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:26:36,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:26:36,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:26:36,057 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:26:36,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:26:36,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1937360309, now seen corresponding path program 1 times [2020-10-12 19:26:36,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:26:36,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481041768] [2020-10-12 19:26:36,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:26:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:36,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:36,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:36,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:36,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:37,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:37,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:37,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:38,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:38,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:39,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:39,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:40,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:40,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:40,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:40,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:41,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:41,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-12 19:26:41,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:26:41,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:26:41,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:41,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:26:41,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:26:41,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-12 19:26:41,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:42,030 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-12 19:26:42,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:26:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:42,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:42,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:42,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:26:42,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:26:42,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 19:26:42,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:42,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:26:42,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:26:42,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:26:42,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:42,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:26:42,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481041768] [2020-10-12 19:26:42,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:26:42,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:26:42,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461706828] [2020-10-12 19:26:42,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:26:42,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:26:42,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:26:42,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:26:42,376 INFO L87 Difference]: Start difference. First operand 10943 states and 18231 transitions. Second operand 5 states. [2020-10-12 19:26:57,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:26:57,465 INFO L93 Difference]: Finished difference Result 31964 states and 53176 transitions. [2020-10-12 19:26:57,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:26:57,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 366 [2020-10-12 19:26:57,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:26:57,529 INFO L225 Difference]: With dead ends: 31964 [2020-10-12 19:26:57,530 INFO L226 Difference]: Without dead ends: 21406 [2020-10-12 19:26:57,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:26:57,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21406 states. [2020-10-12 19:26:58,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21406 to 21404. [2020-10-12 19:26:58,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21404 states. [2020-10-12 19:26:58,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21404 states to 21404 states and 35458 transitions. [2020-10-12 19:26:58,630 INFO L78 Accepts]: Start accepts. Automaton has 21404 states and 35458 transitions. Word has length 366 [2020-10-12 19:26:58,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:26:58,630 INFO L479 AbstractCegarLoop]: Abstraction has 21404 states and 35458 transitions. [2020-10-12 19:26:58,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:26:58,630 INFO L276 IsEmpty]: Start isEmpty. Operand 21404 states and 35458 transitions. [2020-10-12 19:26:58,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-12 19:26:58,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:26:58,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:26:58,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:26:58,688 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:26:58,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:26:58,688 INFO L82 PathProgramCache]: Analyzing trace with hash 342854796, now seen corresponding path program 1 times [2020-10-12 19:26:58,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:26:58,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398704589] [2020-10-12 19:26:58,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:26:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:58,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:59,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:59,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:59,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:59,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:59,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:59,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:00,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:00,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:02,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:02,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:02,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:02,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:03,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:03,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:03,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:03,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:03,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:27:03,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-12 19:27:03,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:27:03,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 19:27:03,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:27:03,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:27:03,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:27:03,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-12 19:27:03,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:27:04,649 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-12 19:27:04,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:27:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:27:04,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:04,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:27:04,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:27:04,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:27:04,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:27:04,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:27:04,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:27:04,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:27:04,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:27:04,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:27:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:27:04,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398704589] [2020-10-12 19:27:04,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:27:04,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:27:04,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605533681] [2020-10-12 19:27:04,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:27:04,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:27:04,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:27:04,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:27:04,914 INFO L87 Difference]: Start difference. First operand 21404 states and 35458 transitions. Second operand 5 states. [2020-10-12 19:27:18,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:27:18,364 INFO L93 Difference]: Finished difference Result 62810 states and 103964 transitions. [2020-10-12 19:27:18,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:27:18,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 370 [2020-10-12 19:27:18,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:27:18,469 INFO L225 Difference]: With dead ends: 62810 [2020-10-12 19:27:18,469 INFO L226 Difference]: Without dead ends: 42080 [2020-10-12 19:27:18,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:27:18,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42080 states. [2020-10-12 19:27:20,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42080 to 42078. [2020-10-12 19:27:20,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42078 states. [2020-10-12 19:27:20,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42078 states to 42078 states and 69346 transitions. [2020-10-12 19:27:20,416 INFO L78 Accepts]: Start accepts. Automaton has 42078 states and 69346 transitions. Word has length 370 [2020-10-12 19:27:20,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:27:20,416 INFO L479 AbstractCegarLoop]: Abstraction has 42078 states and 69346 transitions. [2020-10-12 19:27:20,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:27:20,416 INFO L276 IsEmpty]: Start isEmpty. Operand 42078 states and 69346 transitions. [2020-10-12 19:27:20,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-12 19:27:20,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:27:20,488 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:27:20,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:27:20,489 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:27:20,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:27:20,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1416805632, now seen corresponding path program 1 times [2020-10-12 19:27:20,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:27:20,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792179350] [2020-10-12 19:27:20,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:27:20,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:27:20,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:20,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:20,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:21,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:21,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:21,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:21,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:21,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:22,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:22,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:22,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:23,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:23,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:23,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:24,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:24,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:24,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:25,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:25,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:25,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:25,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:27:25,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-12 19:27:25,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-12 19:27:25,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:27:25,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:27:25,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:27:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:27:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-12 19:27:25,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:27:26,477 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-12 19:27:26,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:27:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:27:26,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:26,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:27:26,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:27:26,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:27:26,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 19:27:26,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:27:26,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:27:26,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:27:26,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:27:26,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:27:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:27:26,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792179350] [2020-10-12 19:27:26,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:27:26,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:27:26,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465339368] [2020-10-12 19:27:26,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:27:26,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:27:26,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:27:26,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:27:26,713 INFO L87 Difference]: Start difference. First operand 42078 states and 69346 transitions. Second operand 5 states. [2020-10-12 19:27:46,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:27:46,700 INFO L93 Difference]: Finished difference Result 124318 states and 204791 transitions. [2020-10-12 19:27:46,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:27:46,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 370 [2020-10-12 19:27:46,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:27:46,826 INFO L225 Difference]: With dead ends: 124318 [2020-10-12 19:27:46,827 INFO L226 Difference]: Without dead ends: 82788 [2020-10-12 19:27:46,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:27:46,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82788 states. [2020-10-12 19:27:53,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82788 to 82786. [2020-10-12 19:27:53,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82786 states. [2020-10-12 19:27:53,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82786 states to 82786 states and 135817 transitions. [2020-10-12 19:27:53,188 INFO L78 Accepts]: Start accepts. Automaton has 82786 states and 135817 transitions. Word has length 370 [2020-10-12 19:27:53,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:27:53,189 INFO L479 AbstractCegarLoop]: Abstraction has 82786 states and 135817 transitions. [2020-10-12 19:27:53,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:27:53,189 INFO L276 IsEmpty]: Start isEmpty. Operand 82786 states and 135817 transitions. [2020-10-12 19:27:53,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-12 19:27:53,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:27:53,278 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:27:53,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:27:53,278 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:27:53,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:27:53,279 INFO L82 PathProgramCache]: Analyzing trace with hash -797204147, now seen corresponding path program 1 times [2020-10-12 19:27:53,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:27:53,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905168357] [2020-10-12 19:27:53,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:27:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:27:53,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:53,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:53,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:54,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:54,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:54,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:54,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:54,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:54,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:56,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:57,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:57,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:57,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:58,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:58,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:58,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:27:58,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-12 19:27:58,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:27:58,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-12 19:27:58,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:27:58,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:27:58,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:27:58,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-12 19:27:58,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:27:59,343 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-12 19:27:59,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:27:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:27:59,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:59,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:27:59,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:27:59,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:27:59,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:27:59,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:27:59,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:27:59,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:27:59,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:27:59,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:27:59,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:27:59,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905168357] [2020-10-12 19:27:59,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:27:59,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:27:59,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108902789] [2020-10-12 19:27:59,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:27:59,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:27:59,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:27:59,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:27:59,552 INFO L87 Difference]: Start difference. First operand 82786 states and 135817 transitions. Second operand 5 states. [2020-10-12 19:28:26,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:28:26,989 INFO L93 Difference]: Finished difference Result 243146 states and 398419 transitions. [2020-10-12 19:28:26,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:28:26,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 372 [2020-10-12 19:28:26,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:28:27,251 INFO L225 Difference]: With dead ends: 243146 [2020-10-12 19:28:27,251 INFO L226 Difference]: Without dead ends: 163104 [2020-10-12 19:28:27,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:28:27,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163104 states. [2020-10-12 19:28:39,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163104 to 163102. [2020-10-12 19:28:39,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163102 states. [2020-10-12 19:28:39,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163102 states to 163102 states and 266345 transitions. [2020-10-12 19:28:39,888 INFO L78 Accepts]: Start accepts. Automaton has 163102 states and 266345 transitions. Word has length 372 [2020-10-12 19:28:39,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:28:39,888 INFO L479 AbstractCegarLoop]: Abstraction has 163102 states and 266345 transitions. [2020-10-12 19:28:39,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:28:39,888 INFO L276 IsEmpty]: Start isEmpty. Operand 163102 states and 266345 transitions. [2020-10-12 19:28:40,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-10-12 19:28:40,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:28:40,023 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:28:40,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:28:40,023 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:28:40,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:28:40,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1114934600, now seen corresponding path program 1 times [2020-10-12 19:28:40,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:28:40,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978852749] [2020-10-12 19:28:40,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:28:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:40,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:40,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:40,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:42,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:42,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:43,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:43,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:43,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:43,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:44,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:44,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:44,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:44,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:44,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:45,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:45,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:45,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 381 [2020-10-12 19:28:45,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:28:45,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-12 19:28:45,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:45,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:28:45,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:28:45,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-12 19:28:45,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:28:46,044 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-12 19:28:46,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:28:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:46,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:46,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:46,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:28:46,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:28:46,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 19:28:46,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:46,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:28:46,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:28:46,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:28:46,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:28:46,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:28:46,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978852749] [2020-10-12 19:28:46,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:28:46,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:28:46,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978443106] [2020-10-12 19:28:46,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:28:46,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:28:46,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:28:46,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:28:46,262 INFO L87 Difference]: Start difference. First operand 163102 states and 266345 transitions. Second operand 5 states.