/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:27:41,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:27:41,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:27:41,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:27:41,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:27:41,784 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:27:41,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:27:41,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:27:41,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:27:41,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:27:41,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:27:41,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:27:41,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:27:41,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:27:41,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:27:41,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:27:41,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:27:41,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:27:41,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:27:41,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:27:41,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:27:41,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:27:41,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:27:41,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:27:41,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:27:41,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:27:41,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:27:41,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:27:41,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:27:41,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:27:41,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:27:41,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:27:41,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:27:41,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:27:41,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:27:41,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:27:41,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:27:41,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:27:41,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:27:41,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:27:41,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:27:41,815 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 20:27:41,837 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:27:41,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:27:41,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:27:41,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:27:41,839 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:27:41,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:27:41,839 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:27:41,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:27:41,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:27:41,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:27:41,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:27:41,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:27:41,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:27:41,841 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:27:41,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:27:41,841 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:27:41,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:27:41,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:27:41,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:27:41,842 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:27:41,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:27:41,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:27:41,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:27:41,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:27:41,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:27:41,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:27:41,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:27:41,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:27:41,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:27:41,844 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:27:42,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:27:42,184 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:27:42,189 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:27:42,191 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:27:42,192 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:27:42,193 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-12 20:27:42,265 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f7362752/3d2858d4dca0492499f25943fece4213/FLAG4ad077d53 [2020-10-12 20:27:42,906 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:27:42,907 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-12 20:27:42,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f7362752/3d2858d4dca0492499f25943fece4213/FLAG4ad077d53 [2020-10-12 20:27:43,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f7362752/3d2858d4dca0492499f25943fece4213 [2020-10-12 20:27:43,107 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:27:43,109 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:27:43,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:27:43,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:27:43,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:27:43,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:27:43" (1/1) ... [2020-10-12 20:27:43,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aae5b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:27:43, skipping insertion in model container [2020-10-12 20:27:43,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:27:43" (1/1) ... [2020-10-12 20:27:43,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:27:43,287 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:27:44,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:27:44,400 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:27:45,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:27:45,502 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:27:45,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:27:45 WrapperNode [2020-10-12 20:27:45,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:27:45,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:27:45,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:27:45,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:27:45,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:27:45" (1/1) ... [2020-10-12 20:27:45,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:27:45" (1/1) ... [2020-10-12 20:27:45,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:27:45" (1/1) ... [2020-10-12 20:27:45,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:27:45" (1/1) ... [2020-10-12 20:27:45,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:27:45" (1/1) ... [2020-10-12 20:27:45,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:27:45" (1/1) ... [2020-10-12 20:27:45,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:27:45" (1/1) ... [2020-10-12 20:27:45,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:27:45,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:27:45,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:27:45,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:27:45,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:27:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:27:45,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:27:45,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:27:45,797 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:27:45,797 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:27:45,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:27:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:27:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:27:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:27:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:27:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:27:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:27:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:27:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:27:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:27:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:27:45,802 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:27:45,802 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 20:27:45,802 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:27:45,803 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:27:45,803 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:27:45,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:27:45,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:27:49,688 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:27:49,689 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:27:49,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:27:49 BoogieIcfgContainer [2020-10-12 20:27:49,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:27:49,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:27:49,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:27:49,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:27:49,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:27:43" (1/3) ... [2020-10-12 20:27:49,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f68a313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:27:49, skipping insertion in model container [2020-10-12 20:27:49,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:27:45" (2/3) ... [2020-10-12 20:27:49,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f68a313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:27:49, skipping insertion in model container [2020-10-12 20:27:49,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:27:49" (3/3) ... [2020-10-12 20:27:49,720 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-12 20:27:49,732 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:27:49,744 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:27:49,759 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:27:49,794 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:27:49,794 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:27:49,794 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:27:49,795 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:27:49,795 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:27:49,795 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:27:49,795 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:27:49,795 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:27:49,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states. [2020-10-12 20:27:49,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-12 20:27:49,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:27:49,883 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, 1] [2020-10-12 20:27:49,883 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:27:49,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:27:49,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1604153631, now seen corresponding path program 1 times [2020-10-12 20:27:49,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:27:49,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034805196] [2020-10-12 20:27:49,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:27:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:51,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:51,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:51,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:52,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:52,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:53,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:53,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:54,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:54,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:55,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:55,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:55,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:55,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-12 20:27:55,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:27:55,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5111 [2020-10-12 20:27:55,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:55,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:27:55,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:27:55,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-12 20:27:55,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:27:56,915 WARN L193 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-12 20:27:56,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:27:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:56,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:56,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:56,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:27:56,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:27:56,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 20:27:56,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:56,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:27:56,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:27:56,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:27:56,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:27:57,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:27:57,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034805196] [2020-10-12 20:27:57,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:27:57,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:27:57,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33139565] [2020-10-12 20:27:57,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:27:57,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:27:57,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:27:57,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:27:57,405 INFO L87 Difference]: Start difference. First operand 1529 states. Second operand 5 states. [2020-10-12 20:28:09,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:28:09,092 INFO L93 Difference]: Finished difference Result 4431 states and 7850 transitions. [2020-10-12 20:28:09,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:28:09,094 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 376 [2020-10-12 20:28:09,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:28:09,142 INFO L225 Difference]: With dead ends: 4431 [2020-10-12 20:28:09,143 INFO L226 Difference]: Without dead ends: 2971 [2020-10-12 20:28:09,155 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 20:28:09,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2020-10-12 20:28:09,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 2969. [2020-10-12 20:28:09,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2969 states. [2020-10-12 20:28:09,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2969 states to 2969 states and 5002 transitions. [2020-10-12 20:28:09,394 INFO L78 Accepts]: Start accepts. Automaton has 2969 states and 5002 transitions. Word has length 376 [2020-10-12 20:28:09,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:28:09,396 INFO L479 AbstractCegarLoop]: Abstraction has 2969 states and 5002 transitions. [2020-10-12 20:28:09,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:28:09,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2969 states and 5002 transitions. [2020-10-12 20:28:09,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-12 20:28:09,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:28:09,409 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, 1] [2020-10-12 20:28:09,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:28:09,410 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:28:09,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:28:09,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1834910027, now seen corresponding path program 1 times [2020-10-12 20:28:09,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:28:09,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719026017] [2020-10-12 20:28:09,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:28:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:09,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:10,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:10,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:10,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:11,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:11,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:11,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:12,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:12,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:12,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:13,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:13,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:13,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:14,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:14,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:14,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:14,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:14,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-12 20:28:14,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 20:28:14,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5148 [2020-10-12 20:28:14,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:14,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:28:14,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:28:14,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-12 20:28:14,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:28:16,067 WARN L193 SmtUtils]: Spent 985.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-12 20:28:16,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:28:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:16,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:16,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:16,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:28:16,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:28:16,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 20:28:16,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:16,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:28:16,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:28:16,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:28:16,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:28:16,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:28:16,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719026017] [2020-10-12 20:28:16,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:28:16,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:28:16,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505850198] [2020-10-12 20:28:16,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:28:16,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:28:16,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:28:16,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:28:16,610 INFO L87 Difference]: Start difference. First operand 2969 states and 5002 transitions. Second operand 5 states. [2020-10-12 20:28:27,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:28:27,721 INFO L93 Difference]: Finished difference Result 8811 states and 14847 transitions. [2020-10-12 20:28:27,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:28:27,721 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 376 [2020-10-12 20:28:27,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:28:27,749 INFO L225 Difference]: With dead ends: 8811 [2020-10-12 20:28:27,749 INFO L226 Difference]: Without dead ends: 5857 [2020-10-12 20:28:27,757 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 20:28:27,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5857 states. [2020-10-12 20:28:27,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5857 to 5855. [2020-10-12 20:28:27,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5855 states. [2020-10-12 20:28:27,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5855 states to 5855 states and 9827 transitions. [2020-10-12 20:28:27,988 INFO L78 Accepts]: Start accepts. Automaton has 5855 states and 9827 transitions. Word has length 376 [2020-10-12 20:28:27,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:28:27,989 INFO L479 AbstractCegarLoop]: Abstraction has 5855 states and 9827 transitions. [2020-10-12 20:28:27,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:28:27,990 INFO L276 IsEmpty]: Start isEmpty. Operand 5855 states and 9827 transitions. [2020-10-12 20:28:28,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-10-12 20:28:28,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:28:28,009 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, 1, 1, 1] [2020-10-12 20:28:28,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:28:28,009 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:28:28,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:28:28,010 INFO L82 PathProgramCache]: Analyzing trace with hash 967246728, now seen corresponding path program 1 times [2020-10-12 20:28:28,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:28:28,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963521259] [2020-10-12 20:28:28,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:28:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:28,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:28,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:28,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:28,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:29,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:29,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:29,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:29,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:30,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:31,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:31,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:31,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:32,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:32,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:32,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:32,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:33,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:33,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-12 20:28:33,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 20:28:33,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-12 20:28:33,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:33,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:28:33,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:28:33,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-12 20:28:33,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:28:34,108 WARN L193 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-12 20:28:34,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:28:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:34,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:34,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:34,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:28:34,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:28:34,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 20:28:34,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:34,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:28:34,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:28:34,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:28:34,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:28:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:28:34,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963521259] [2020-10-12 20:28:34,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:28:34,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:28:34,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560364610] [2020-10-12 20:28:34,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:28:34,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:28:34,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:28:34,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:28:34,410 INFO L87 Difference]: Start difference. First operand 5855 states and 9827 transitions. Second operand 5 states. [2020-10-12 20:28:44,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:28:44,609 INFO L93 Difference]: Finished difference Result 17314 states and 29049 transitions. [2020-10-12 20:28:44,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:28:44,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 378 [2020-10-12 20:28:44,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:28:44,658 INFO L225 Difference]: With dead ends: 17314 [2020-10-12 20:28:44,658 INFO L226 Difference]: Without dead ends: 11524 [2020-10-12 20:28:44,672 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 20:28:44,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11524 states. [2020-10-12 20:28:45,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11524 to 11522. [2020-10-12 20:28:45,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11522 states. [2020-10-12 20:28:45,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11522 states to 11522 states and 19249 transitions. [2020-10-12 20:28:45,204 INFO L78 Accepts]: Start accepts. Automaton has 11522 states and 19249 transitions. Word has length 378 [2020-10-12 20:28:45,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:28:45,204 INFO L479 AbstractCegarLoop]: Abstraction has 11522 states and 19249 transitions. [2020-10-12 20:28:45,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:28:45,205 INFO L276 IsEmpty]: Start isEmpty. Operand 11522 states and 19249 transitions. [2020-10-12 20:28:45,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-10-12 20:28:45,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:28:45,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:28:45,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:28:45,238 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:28:45,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:28:45,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1381878836, now seen corresponding path program 1 times [2020-10-12 20:28:45,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:28:45,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404954191] [2020-10-12 20:28:45,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:28:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:45,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:45,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:45,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:46,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:46,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:46,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:46,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:46,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:47,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:47,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:47,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:48,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:48,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:49,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:49,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:49,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:50,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:50,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:50,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-12 20:28:50,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 20:28:50,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-12 20:28:50,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:50,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:28:50,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:28:50,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-12 20:28:50,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:28:51,321 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-12 20:28:51,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:28:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:51,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:51,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:51,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:28:51,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:28:51,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 20:28:51,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:51,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:28:51,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:28:51,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:28:51,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:28:51,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:28:51,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404954191] [2020-10-12 20:28:51,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:28:51,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:28:51,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048789866] [2020-10-12 20:28:51,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:28:51,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:28:51,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:28:51,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:28:51,580 INFO L87 Difference]: Start difference. First operand 11522 states and 19249 transitions. Second operand 5 states. [2020-10-12 20:29:06,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:29:06,574 INFO L93 Difference]: Finished difference Result 33442 states and 55747 transitions. [2020-10-12 20:29:06,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:29:06,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 378 [2020-10-12 20:29:06,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:29:06,643 INFO L225 Difference]: With dead ends: 33442 [2020-10-12 20:29:06,643 INFO L226 Difference]: Without dead ends: 22496 [2020-10-12 20:29:06,666 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 20:29:06,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22496 states. [2020-10-12 20:29:08,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22496 to 22494. [2020-10-12 20:29:08,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22494 states. [2020-10-12 20:29:08,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22494 states to 22494 states and 37402 transitions. [2020-10-12 20:29:08,434 INFO L78 Accepts]: Start accepts. Automaton has 22494 states and 37402 transitions. Word has length 378 [2020-10-12 20:29:08,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:29:08,434 INFO L479 AbstractCegarLoop]: Abstraction has 22494 states and 37402 transitions. [2020-10-12 20:29:08,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:29:08,435 INFO L276 IsEmpty]: Start isEmpty. Operand 22494 states and 37402 transitions. [2020-10-12 20:29:08,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-12 20:29:08,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:29:08,491 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, 1, 1, 1, 1, 1] [2020-10-12 20:29:08,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:29:08,491 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:29:08,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:29:08,492 INFO L82 PathProgramCache]: Analyzing trace with hash -824244619, now seen corresponding path program 1 times [2020-10-12 20:29:08,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:29:08,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555991541] [2020-10-12 20:29:08,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:29:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:29:08,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:08,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:09,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:09,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:09,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:09,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:10,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:10,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:10,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:10,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:10,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:11,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:11,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:11,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:11,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:12,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:12,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:13,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:29:13,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-12 20:29:13,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 20:29:13,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 20:29:13,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:29:13,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:29:13,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:29:13,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-12 20:29:13,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:29:14,490 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-12 20:29:14,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:29:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:29:14,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:14,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:29:14,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:29:14,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:29:14,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:29:14,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:29:14,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:29:14,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:29:14,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:29:14,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:29:14,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:29:14,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555991541] [2020-10-12 20:29:14,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:29:14,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:29:14,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286603012] [2020-10-12 20:29:14,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:29:14,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:29:14,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:29:14,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:29:14,691 INFO L87 Difference]: Start difference. First operand 22494 states and 37402 transitions. Second operand 5 states. [2020-10-12 20:29:27,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:29:27,788 INFO L93 Difference]: Finished difference Result 66283 states and 110114 transitions. [2020-10-12 20:29:27,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:29:27,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 380 [2020-10-12 20:29:27,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:29:27,871 INFO L225 Difference]: With dead ends: 66283 [2020-10-12 20:29:27,871 INFO L226 Difference]: Without dead ends: 44179 [2020-10-12 20:29:27,914 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 20:29:27,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44179 states. [2020-10-12 20:29:29,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44179 to 44177. [2020-10-12 20:29:29,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44177 states. [2020-10-12 20:29:29,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44177 states to 44177 states and 73055 transitions. [2020-10-12 20:29:29,666 INFO L78 Accepts]: Start accepts. Automaton has 44177 states and 73055 transitions. Word has length 380 [2020-10-12 20:29:29,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:29:29,666 INFO L479 AbstractCegarLoop]: Abstraction has 44177 states and 73055 transitions. [2020-10-12 20:29:29,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:29:29,666 INFO L276 IsEmpty]: Start isEmpty. Operand 44177 states and 73055 transitions. [2020-10-12 20:29:29,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-10-12 20:29:29,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:29:29,741 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:29:29,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:29:29,741 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:29:29,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:29:29,742 INFO L82 PathProgramCache]: Analyzing trace with hash -704883991, now seen corresponding path program 1 times [2020-10-12 20:29:29,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:29:29,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513600878] [2020-10-12 20:29:29,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:29:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:29:29,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:29,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:29,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:30,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:30,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:30,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:30,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:30,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:30,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:31,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:31,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:31,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:31,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:34,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:29:34,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-12 20:29:34,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:29:34,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-12 20:29:34,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:29:34,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:29:34,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:29:34,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-12 20:29:34,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:29:35,618 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-12 20:29:35,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:29:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:29:35,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:35,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:29:35,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:29:35,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:29:35,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 20:29:35,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:29:35,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:29:35,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:29:35,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:29:35,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:29:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:29:35,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513600878] [2020-10-12 20:29:35,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:29:35,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:29:35,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747003632] [2020-10-12 20:29:35,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:29:35,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:29:35,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:29:35,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:29:35,888 INFO L87 Difference]: Start difference. First operand 44177 states and 73055 transitions. Second operand 5 states. [2020-10-12 20:29:52,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:29:52,086 INFO L93 Difference]: Finished difference Result 130928 states and 216437 transitions. [2020-10-12 20:29:52,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:29:52,087 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 382 [2020-10-12 20:29:52,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:29:52,197 INFO L225 Difference]: With dead ends: 130928 [2020-10-12 20:29:52,198 INFO L226 Difference]: Without dead ends: 87138 [2020-10-12 20:29:52,259 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 20:29:52,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87138 states. [2020-10-12 20:29:55,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87138 to 87136. [2020-10-12 20:29:55,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87136 states. [2020-10-12 20:29:55,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87136 states to 87136 states and 143411 transitions. [2020-10-12 20:29:55,556 INFO L78 Accepts]: Start accepts. Automaton has 87136 states and 143411 transitions. Word has length 382 [2020-10-12 20:29:55,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:29:55,557 INFO L479 AbstractCegarLoop]: Abstraction has 87136 states and 143411 transitions. [2020-10-12 20:29:55,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:29:55,557 INFO L276 IsEmpty]: Start isEmpty. Operand 87136 states and 143411 transitions. [2020-10-12 20:29:55,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2020-10-12 20:29:55,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:29:55,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:29:55,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:29:55,652 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:29:55,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:29:55,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1338759276, now seen corresponding path program 1 times [2020-10-12 20:29:55,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:29:55,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667180436] [2020-10-12 20:29:55,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:29:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:29:55,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:55,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:56,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:56,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:56,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:56,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:56,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:56,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:56,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:56,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:56,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:57,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:58,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:58,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:58,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:00,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:30:00,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-12 20:30:00,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:30:00,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-12 20:30:00,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:30:00,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:30:00,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:30:00,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-12 20:30:00,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:30:01,954 WARN L193 SmtUtils]: Spent 905.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-12 20:30:01,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:30:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:30:01,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:01,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:30:01,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:30:01,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:30:01,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 20:30:01,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:30:01,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:30:01,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:30:01,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:30:01,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:30:02,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:30:02,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667180436] [2020-10-12 20:30:02,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:30:02,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:30:02,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870196147] [2020-10-12 20:30:02,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:30:02,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:30:02,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:30:02,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:30:02,168 INFO L87 Difference]: Start difference. First operand 87136 states and 143411 transitions. Second operand 5 states. [2020-10-12 20:30:25,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:30:25,525 INFO L93 Difference]: Finished difference Result 254181 states and 417692 transitions. [2020-10-12 20:30:25,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:30:25,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 384 [2020-10-12 20:30:25,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:30:25,718 INFO L225 Difference]: With dead ends: 254181 [2020-10-12 20:30:25,719 INFO L226 Difference]: Without dead ends: 171878 [2020-10-12 20:30:25,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:30:25,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171878 states. [2020-10-12 20:30:36,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171878 to 171876. [2020-10-12 20:30:36,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171876 states. [2020-10-12 20:30:36,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171876 states to 171876 states and 281681 transitions. [2020-10-12 20:30:36,284 INFO L78 Accepts]: Start accepts. Automaton has 171876 states and 281681 transitions. Word has length 384 [2020-10-12 20:30:36,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:30:36,285 INFO L479 AbstractCegarLoop]: Abstraction has 171876 states and 281681 transitions. [2020-10-12 20:30:36,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:30:36,285 INFO L276 IsEmpty]: Start isEmpty. Operand 171876 states and 281681 transitions. [2020-10-12 20:30:36,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-10-12 20:30:36,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:30:36,421 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:30:36,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:30:36,422 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:30:36,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:30:36,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1260755865, now seen corresponding path program 1 times [2020-10-12 20:30:36,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:30:36,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040258653] [2020-10-12 20:30:36,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:30:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:30:36,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:36,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:36,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:37,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:37,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:37,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:37,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:37,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:37,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:38,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:38,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:38,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:39,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:39,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:39,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:42,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:30:42,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 392 [2020-10-12 20:30:42,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:30:42,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6073 [2020-10-12 20:30:42,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:30:42,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:30:42,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:30:42,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-12 20:30:42,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:30:43,394 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-12 20:30:43,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:30:43,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:30:43,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:43,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:30:43,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:30:43,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:30:43,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:30:43,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:30:43,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:30:43,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:30:43,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:30:43,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:30:43,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:30:43,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040258653] [2020-10-12 20:30:43,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:30:43,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:30:43,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275922676] [2020-10-12 20:30:43,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:30:43,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:30:43,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:30:43,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:30:43,598 INFO L87 Difference]: Start difference. First operand 171876 states and 281681 transitions. Second operand 5 states. [2020-10-12 20:31:19,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:31:19,671 INFO L93 Difference]: Finished difference Result 505217 states and 827113 transitions. [2020-10-12 20:31:19,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:31:19,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 386 [2020-10-12 20:31:19,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:31:20,032 INFO L225 Difference]: With dead ends: 505217 [2020-10-12 20:31:20,033 INFO L226 Difference]: Without dead ends: 339071 [2020-10-12 20:31:20,143 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 20:31:20,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339071 states.