/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:09:31,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:09:31,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:09:31,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:09:31,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:09:31,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:09:31,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:09:31,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:09:31,609 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:09:31,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:09:31,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:09:31,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:09:31,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:09:31,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:09:31,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:09:31,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:09:31,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:09:31,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:09:31,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:09:31,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:09:31,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:09:31,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:09:31,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:09:31,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:09:31,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:09:31,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:09:31,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:09:31,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:09:31,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:09:31,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:09:31,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:09:31,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:09:31,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:09:31,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:09:31,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:09:31,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:09:31,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:09:31,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:09:31,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:09:31,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:09:31,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:09:31,654 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 [2020-10-15 04:09:31,697 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:09:31,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:09:31,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:09:31,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:09:31,700 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:09:31,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:09:31,701 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:09:31,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:09:31,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:09:31,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:09:31,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:09:31,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:09:31,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:09:31,703 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:09:31,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:09:31,704 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:09:31,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:09:31,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:09:31,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:09:31,705 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:09:31,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:09:31,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:09:31,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:09:31,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:09:31,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:09:31,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:09:31,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:09:31,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:09:31,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:09:31,706 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:09:32,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:09:32,062 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:09:32,065 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:09:32,067 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:09:32,067 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:09:32,068 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-15 04:09:32,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97f32582e/a4ecdb88b1d8466ca963fc8c42506824/FLAGd19c73b09 [2020-10-15 04:09:32,753 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:09:32,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-15 04:09:32,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97f32582e/a4ecdb88b1d8466ca963fc8c42506824/FLAGd19c73b09 [2020-10-15 04:09:32,973 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97f32582e/a4ecdb88b1d8466ca963fc8c42506824 [2020-10-15 04:09:32,982 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:09:32,984 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:09:32,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:09:32,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:09:32,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:09:32,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:09:32" (1/1) ... [2020-10-15 04:09:32,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@156d188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:32, skipping insertion in model container [2020-10-15 04:09:32,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:09:32" (1/1) ... [2020-10-15 04:09:33,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:09:33,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:09:34,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:09:34,260 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:09:34,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:09:34,827 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:09:34,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:34 WrapperNode [2020-10-15 04:09:34,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:09:34,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:09:34,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:09:34,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:09:34,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:34" (1/1) ... [2020-10-15 04:09:34,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:34" (1/1) ... [2020-10-15 04:09:34,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:34" (1/1) ... [2020-10-15 04:09:34,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:34" (1/1) ... [2020-10-15 04:09:34,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:34" (1/1) ... [2020-10-15 04:09:34,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:34" (1/1) ... [2020-10-15 04:09:34,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:34" (1/1) ... [2020-10-15 04:09:34,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:09:34,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:09:34,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:09:34,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:09:34,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:34" (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 [2020-10-15 04:09:35,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:09:35,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:09:35,097 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:09:35,097 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:09:35,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:09:35,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:09:35,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:09:35,098 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:09:35,099 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:09:35,099 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:09:35,099 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:09:35,099 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:09:35,100 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:09:35,100 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:09:35,100 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:09:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 04:09:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:09:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:09:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:09:35,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:09:35,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:09:37,685 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:09:37,685 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:09:37,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:09:37 BoogieIcfgContainer [2020-10-15 04:09:37,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:09:37,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:09:37,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:09:37,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:09:37,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:09:32" (1/3) ... [2020-10-15 04:09:37,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4066f964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:09:37, skipping insertion in model container [2020-10-15 04:09:37,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:34" (2/3) ... [2020-10-15 04:09:37,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4066f964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:09:37, skipping insertion in model container [2020-10-15 04:09:37,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:09:37" (3/3) ... [2020-10-15 04:09:37,707 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-15 04:09:37,718 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:09:37,727 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:09:37,743 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:09:37,774 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:09:37,775 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:09:37,775 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:09:37,775 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:09:37,775 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:09:37,775 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:09:37,775 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:09:37,775 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:09:37,809 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states. [2020-10-15 04:09:37,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-15 04:09:37,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:09:37,838 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] [2020-10-15 04:09:37,838 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:09:37,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:09:37,845 INFO L82 PathProgramCache]: Analyzing trace with hash -2046950044, now seen corresponding path program 1 times [2020-10-15 04:09:37,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:09:37,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996031892] [2020-10-15 04:09:37,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:09:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:39,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:40,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:41,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:41,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:41,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:42,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:42,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:42,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:42,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:43,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:43,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:43,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:43,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:43,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:44,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:44,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-15 04:09:44,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 04:09:44,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-15 04:09:44,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:44,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:44,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:09:44,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:09:44,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-15 04:09:44,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:09:44,801 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-15 04:09:44,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:09:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:44,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:44,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:44,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:09:44,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:09:44,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-15 04:09:44,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:44,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:44,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:09:44,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:09:44,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:09:44,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:09:45,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:09:45,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996031892] [2020-10-15 04:09:45,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:09:45,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:09:45,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851883916] [2020-10-15 04:09:45,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:09:45,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:09:45,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:09:45,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:09:45,154 INFO L87 Difference]: Start difference. First operand 795 states. Second operand 5 states. [2020-10-15 04:09:53,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:09:53,110 INFO L93 Difference]: Finished difference Result 2334 states and 4149 transitions. [2020-10-15 04:09:53,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:09:53,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-10-15 04:09:53,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:09:53,143 INFO L225 Difference]: With dead ends: 2334 [2020-10-15 04:09:53,143 INFO L226 Difference]: Without dead ends: 1544 [2020-10-15 04:09:53,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:09:53,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2020-10-15 04:09:53,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1542. [2020-10-15 04:09:53,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2020-10-15 04:09:53,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2399 transitions. [2020-10-15 04:09:53,312 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2399 transitions. Word has length 324 [2020-10-15 04:09:53,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:09:53,316 INFO L479 AbstractCegarLoop]: Abstraction has 1542 states and 2399 transitions. [2020-10-15 04:09:53,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:09:53,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2399 transitions. [2020-10-15 04:09:53,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-15 04:09:53,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:09:53,331 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] [2020-10-15 04:09:53,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:09:53,332 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:09:53,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:09:53,337 INFO L82 PathProgramCache]: Analyzing trace with hash 93964340, now seen corresponding path program 1 times [2020-10-15 04:09:53,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:09:53,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654519129] [2020-10-15 04:09:53,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:09:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:53,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:53,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:54,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:54,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:54,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:54,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:54,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:54,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:55,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:55,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:55,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:55,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:55,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:56,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:58,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:58,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-15 04:09:58,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 04:09:58,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-15 04:09:58,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:58,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:58,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:09:58,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 04:09:58,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-15 04:09:58,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:09:59,212 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-15 04:09:59,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:09:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:59,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:59,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:59,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:09:59,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:09:59,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 04:09:59,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:59,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:59,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:09:59,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:09:59,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:09:59,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:09:59,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:09:59,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654519129] [2020-10-15 04:09:59,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:09:59,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:09:59,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674937799] [2020-10-15 04:09:59,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:09:59,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:09:59,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:09:59,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:09:59,658 INFO L87 Difference]: Start difference. First operand 1542 states and 2399 transitions. Second operand 4 states. [2020-10-15 04:10:08,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:10:08,307 INFO L93 Difference]: Finished difference Result 4412 states and 6828 transitions. [2020-10-15 04:10:08,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:10:08,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-10-15 04:10:08,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:10:08,331 INFO L225 Difference]: With dead ends: 4412 [2020-10-15 04:10:08,331 INFO L226 Difference]: Without dead ends: 3010 [2020-10-15 04:10:08,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:10:08,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2020-10-15 04:10:08,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 3008. [2020-10-15 04:10:08,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3008 states. [2020-10-15 04:10:08,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4654 transitions. [2020-10-15 04:10:08,510 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4654 transitions. Word has length 326 [2020-10-15 04:10:08,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:10:08,513 INFO L479 AbstractCegarLoop]: Abstraction has 3008 states and 4654 transitions. [2020-10-15 04:10:08,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:10:08,513 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4654 transitions. [2020-10-15 04:10:08,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-15 04:10:08,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:10:08,527 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] [2020-10-15 04:10:08,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:10:08,528 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:10:08,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:10:08,528 INFO L82 PathProgramCache]: Analyzing trace with hash 140980473, now seen corresponding path program 1 times [2020-10-15 04:10:08,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:10:08,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947042626] [2020-10-15 04:10:08,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:10:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:08,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:08,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:08,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:09,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:09,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:09,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:09,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:09,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:10,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:10,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:10,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:10,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:10,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:13,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:13,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-15 04:10:13,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:10:13,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 04:10:13,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:13,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:13,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:10:13,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:10:13,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-15 04:10:13,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:10:14,213 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-15 04:10:14,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:10:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:14,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:14,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:14,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:10:14,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:10:14,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 04:10:14,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:14,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:14,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:10:14,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:10:14,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:10:14,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:10:14,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:10:14,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947042626] [2020-10-15 04:10:14,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:10:14,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:10:14,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024400957] [2020-10-15 04:10:14,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:10:14,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:10:14,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:10:14,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:10:14,594 INFO L87 Difference]: Start difference. First operand 3008 states and 4654 transitions. Second operand 5 states. [2020-10-15 04:10:21,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:10:21,494 INFO L93 Difference]: Finished difference Result 8702 states and 13404 transitions. [2020-10-15 04:10:21,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:10:21,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-10-15 04:10:21,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:10:21,525 INFO L225 Difference]: With dead ends: 8702 [2020-10-15 04:10:21,525 INFO L226 Difference]: Without dead ends: 5840 [2020-10-15 04:10:21,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:10:21,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5840 states. [2020-10-15 04:10:21,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5840 to 5838. [2020-10-15 04:10:21,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5838 states. [2020-10-15 04:10:21,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5838 states to 5838 states and 8954 transitions. [2020-10-15 04:10:21,808 INFO L78 Accepts]: Start accepts. Automaton has 5838 states and 8954 transitions. Word has length 326 [2020-10-15 04:10:21,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:10:21,810 INFO L479 AbstractCegarLoop]: Abstraction has 5838 states and 8954 transitions. [2020-10-15 04:10:21,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:10:21,811 INFO L276 IsEmpty]: Start isEmpty. Operand 5838 states and 8954 transitions. [2020-10-15 04:10:21,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-15 04:10:21,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:10:21,830 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] [2020-10-15 04:10:21,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:10:21,831 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:10:21,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:10:21,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1401188304, now seen corresponding path program 1 times [2020-10-15 04:10:21,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:10:21,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338439093] [2020-10-15 04:10:21,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:10:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:21,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:21,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:22,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:22,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:22,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:22,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:22,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:22,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:22,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:22,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:23,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:23,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:23,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:26,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:26,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-15 04:10:26,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:10:26,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-15 04:10:26,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:26,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:26,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:10:26,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:10:26,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-15 04:10:26,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:10:27,628 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-15 04:10:27,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:10:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:27,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:27,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:27,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:10:27,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:10:27,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 04:10:27,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:27,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:27,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:10:27,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:10:27,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:10:27,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:10:27,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:10:27,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338439093] [2020-10-15 04:10:27,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:10:27,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:10:27,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183765071] [2020-10-15 04:10:27,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:10:27,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:10:27,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:10:27,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:10:27,856 INFO L87 Difference]: Start difference. First operand 5838 states and 8954 transitions. Second operand 5 states. [2020-10-15 04:10:34,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:10:34,524 INFO L93 Difference]: Finished difference Result 16982 states and 25930 transitions. [2020-10-15 04:10:34,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:10:34,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 328 [2020-10-15 04:10:34,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:10:34,569 INFO L225 Difference]: With dead ends: 16982 [2020-10-15 04:10:34,570 INFO L226 Difference]: Without dead ends: 11332 [2020-10-15 04:10:34,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:10:34,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11332 states. [2020-10-15 04:10:35,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11332 to 11330. [2020-10-15 04:10:35,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11330 states. [2020-10-15 04:10:35,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11330 states to 11330 states and 17200 transitions. [2020-10-15 04:10:35,040 INFO L78 Accepts]: Start accepts. Automaton has 11330 states and 17200 transitions. Word has length 328 [2020-10-15 04:10:35,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:10:35,040 INFO L479 AbstractCegarLoop]: Abstraction has 11330 states and 17200 transitions. [2020-10-15 04:10:35,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:10:35,041 INFO L276 IsEmpty]: Start isEmpty. Operand 11330 states and 17200 transitions. [2020-10-15 04:10:35,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-15 04:10:35,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:10:35,067 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] [2020-10-15 04:10:35,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:10:35,068 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:10:35,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:10:35,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1327834475, now seen corresponding path program 1 times [2020-10-15 04:10:35,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:10:35,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523007413] [2020-10-15 04:10:35,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:10:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:35,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:35,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:35,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:35,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:35,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:35,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:35,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:35,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:35,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:35,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:36,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:36,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:36,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:40,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:40,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-15 04:10:40,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:10:40,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-15 04:10:40,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:40,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:40,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:10:40,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-15 04:10:40,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-15 04:10:40,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:10:40,772 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-15 04:10:40,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:10:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:40,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:40,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:40,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:10:40,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:10:40,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:10:40,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:40,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:40,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:10:40,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:10:40,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:10:40,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:10:40,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:10:40,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523007413] [2020-10-15 04:10:40,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:10:40,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:10:40,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494064791] [2020-10-15 04:10:40,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:10:40,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:10:40,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:10:40,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:10:40,922 INFO L87 Difference]: Start difference. First operand 11330 states and 17200 transitions. Second operand 4 states. [2020-10-15 04:10:48,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:10:48,866 INFO L93 Difference]: Finished difference Result 32650 states and 49322 transitions. [2020-10-15 04:10:48,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:10:48,867 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2020-10-15 04:10:48,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:10:48,929 INFO L225 Difference]: With dead ends: 32650 [2020-10-15 04:10:48,930 INFO L226 Difference]: Without dead ends: 22032 [2020-10-15 04:10:48,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:10:48,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22032 states. [2020-10-15 04:10:49,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22032 to 22030. [2020-10-15 04:10:49,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22030 states. [2020-10-15 04:10:49,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22030 states to 22030 states and 33168 transitions. [2020-10-15 04:10:49,846 INFO L78 Accepts]: Start accepts. Automaton has 22030 states and 33168 transitions. Word has length 330 [2020-10-15 04:10:49,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:10:49,847 INFO L479 AbstractCegarLoop]: Abstraction has 22030 states and 33168 transitions. [2020-10-15 04:10:49,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:10:49,847 INFO L276 IsEmpty]: Start isEmpty. Operand 22030 states and 33168 transitions. [2020-10-15 04:10:49,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-15 04:10:49,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:10:49,897 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] [2020-10-15 04:10:49,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:10:49,897 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:10:49,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:10:49,898 INFO L82 PathProgramCache]: Analyzing trace with hash 543018416, now seen corresponding path program 1 times [2020-10-15 04:10:49,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:10:49,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669359862] [2020-10-15 04:10:49,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:10:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:49,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:50,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:50,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:50,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:50,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:50,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:50,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:50,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:50,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:50,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:50,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:50,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:50,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:54,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:54,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:54,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:54,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-15 04:10:54,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 04:10:54,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-15 04:10:54,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:54,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:54,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:10:54,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:10:54,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-15 04:10:54,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:10:55,531 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-15 04:10:55,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:10:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:55,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:55,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:55,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:10:55,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:10:55,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:10:55,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:55,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:55,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:10:55,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:10:55,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:10:55,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:10:55,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:10:55,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669359862] [2020-10-15 04:10:55,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:10:55,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:10:55,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849114840] [2020-10-15 04:10:55,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:10:55,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:10:55,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:10:55,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:10:55,684 INFO L87 Difference]: Start difference. First operand 22030 states and 33168 transitions. Second operand 5 states. [2020-10-15 04:11:03,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:11:03,625 INFO L93 Difference]: Finished difference Result 64522 states and 96818 transitions. [2020-10-15 04:11:03,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:11:03,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2020-10-15 04:11:03,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:11:03,718 INFO L225 Difference]: With dead ends: 64522 [2020-10-15 04:11:03,718 INFO L226 Difference]: Without dead ends: 42908 [2020-10-15 04:11:03,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:11:03,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42908 states. [2020-10-15 04:11:04,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42908 to 42906. [2020-10-15 04:11:04,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42906 states. [2020-10-15 04:11:05,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42906 states to 42906 states and 63972 transitions. [2020-10-15 04:11:05,318 INFO L78 Accepts]: Start accepts. Automaton has 42906 states and 63972 transitions. Word has length 330 [2020-10-15 04:11:05,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:11:05,318 INFO L479 AbstractCegarLoop]: Abstraction has 42906 states and 63972 transitions. [2020-10-15 04:11:05,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:11:05,318 INFO L276 IsEmpty]: Start isEmpty. Operand 42906 states and 63972 transitions. [2020-10-15 04:11:05,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-15 04:11:05,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:11:05,366 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] [2020-10-15 04:11:05,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:11:05,367 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:11:05,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:11:05,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1469602386, now seen corresponding path program 1 times [2020-10-15 04:11:05,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:11:05,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472951606] [2020-10-15 04:11:05,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:11:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:05,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:05,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:05,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:05,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:05,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:05,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:05,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:05,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:05,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:05,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:06,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:06,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:06,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:06,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:06,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:06,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:10,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:10,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-15 04:11:10,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 04:11:10,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 04:11:10,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:10,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:10,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:11:10,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:11:10,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-15 04:11:10,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:11:10,919 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-15 04:11:10,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:11:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:10,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:10,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:10,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:11:10,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:11:10,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:11:10,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:10,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:10,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:11:10,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:11:10,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:11:10,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:11:11,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:11:11,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472951606] [2020-10-15 04:11:11,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:11:11,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:11:11,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841725667] [2020-10-15 04:11:11,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:11:11,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:11:11,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:11:11,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:11:11,114 INFO L87 Difference]: Start difference. First operand 42906 states and 63972 transitions. Second operand 5 states. [2020-10-15 04:11:20,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:11:20,198 INFO L93 Difference]: Finished difference Result 125927 states and 187285 transitions. [2020-10-15 04:11:20,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:11:20,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 332 [2020-10-15 04:11:20,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:11:20,309 INFO L225 Difference]: With dead ends: 125927 [2020-10-15 04:11:20,310 INFO L226 Difference]: Without dead ends: 83183 [2020-10-15 04:11:20,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:11:20,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83183 states. [2020-10-15 04:11:24,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83183 to 83181. [2020-10-15 04:11:24,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83181 states. [2020-10-15 04:11:24,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83181 states to 83181 states and 122833 transitions. [2020-10-15 04:11:24,838 INFO L78 Accepts]: Start accepts. Automaton has 83181 states and 122833 transitions. Word has length 332 [2020-10-15 04:11:24,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:11:24,838 INFO L479 AbstractCegarLoop]: Abstraction has 83181 states and 122833 transitions. [2020-10-15 04:11:24,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:11:24,838 INFO L276 IsEmpty]: Start isEmpty. Operand 83181 states and 122833 transitions. [2020-10-15 04:11:24,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-15 04:11:24,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:11:24,911 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] [2020-10-15 04:11:24,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:11:24,911 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:11:24,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:11:24,912 INFO L82 PathProgramCache]: Analyzing trace with hash 456084024, now seen corresponding path program 1 times [2020-10-15 04:11:24,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:11:24,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766400178] [2020-10-15 04:11:24,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:11:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:24,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:25,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:25,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:25,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:25,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:25,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:25,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:25,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:25,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:25,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:25,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:25,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:27,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:27,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:29,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:29,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-15 04:11:29,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 04:11:29,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 04:11:29,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:29,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:29,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:11:29,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-15 04:11:29,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-15 04:11:29,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:11:30,462 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-15 04:11:30,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:11:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:30,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:30,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:30,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:11:30,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:11:30,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:11:30,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:30,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:30,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:11:30,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:11:30,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:11:30,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:11:30,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:11:30,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766400178] [2020-10-15 04:11:30,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:11:30,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:11:30,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324735686] [2020-10-15 04:11:30,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:11:30,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:11:30,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:11:30,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:11:30,583 INFO L87 Difference]: Start difference. First operand 83181 states and 122833 transitions. Second operand 4 states. [2020-10-15 04:11:43,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:11:43,756 INFO L93 Difference]: Finished difference Result 242421 states and 356636 transitions. [2020-10-15 04:11:43,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:11:43,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 334 [2020-10-15 04:11:43,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:11:43,975 INFO L225 Difference]: With dead ends: 242421 [2020-10-15 04:11:43,975 INFO L226 Difference]: Without dead ends: 163139 [2020-10-15 04:11:44,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:11:44,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163139 states. [2020-10-15 04:11:52,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163139 to 163137. [2020-10-15 04:11:52,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163137 states. [2020-10-15 04:11:52,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163137 states to 163137 states and 238958 transitions. [2020-10-15 04:11:52,228 INFO L78 Accepts]: Start accepts. Automaton has 163137 states and 238958 transitions. Word has length 334 [2020-10-15 04:11:52,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:11:52,229 INFO L479 AbstractCegarLoop]: Abstraction has 163137 states and 238958 transitions. [2020-10-15 04:11:52,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:11:52,229 INFO L276 IsEmpty]: Start isEmpty. Operand 163137 states and 238958 transitions. [2020-10-15 04:11:52,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-15 04:11:52,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:11:52,340 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] [2020-10-15 04:11:52,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:11:52,340 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:11:52,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:11:52,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1606052419, now seen corresponding path program 1 times [2020-10-15 04:11:52,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:11:52,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318589639] [2020-10-15 04:11:52,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:11:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:52,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:52,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:52,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:52,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:52,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:52,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:52,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:52,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:52,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:53,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:53,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:53,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:53,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:57,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:57,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:57,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:57,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-15 04:11:57,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 04:11:57,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-15 04:11:57,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:57,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:11:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:11:57,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-15 04:11:57,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:11:58,167 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-15 04:11:58,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:11:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:58,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:58,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:58,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:11:58,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:11:58,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 04:11:58,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:58,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:58,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:11:58,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:11:58,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:11:58,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:11:58,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:11:58,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318589639] [2020-10-15 04:11:58,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:11:58,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:11:58,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169053826] [2020-10-15 04:11:58,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:11:58,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:11:58,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:11:58,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:11:58,394 INFO L87 Difference]: Start difference. First operand 163137 states and 238958 transitions. Second operand 5 states. [2020-10-15 04:12:16,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:12:16,453 INFO L93 Difference]: Finished difference Result 336353 states and 490858 transitions. [2020-10-15 04:12:16,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:12:16,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 334 [2020-10-15 04:12:16,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:12:16,716 INFO L225 Difference]: With dead ends: 336353 [2020-10-15 04:12:16,716 INFO L226 Difference]: Without dead ends: 182239 [2020-10-15 04:12:16,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:12:16,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182239 states. [2020-10-15 04:12:23,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182239 to 161328. [2020-10-15 04:12:23,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161328 states. [2020-10-15 04:12:23,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161328 states to 161328 states and 235944 transitions. [2020-10-15 04:12:23,691 INFO L78 Accepts]: Start accepts. Automaton has 161328 states and 235944 transitions. Word has length 334 [2020-10-15 04:12:23,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:12:23,691 INFO L479 AbstractCegarLoop]: Abstraction has 161328 states and 235944 transitions. [2020-10-15 04:12:23,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:12:23,691 INFO L276 IsEmpty]: Start isEmpty. Operand 161328 states and 235944 transitions. [2020-10-15 04:12:23,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-15 04:12:23,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:12:23,811 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] [2020-10-15 04:12:23,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:12:23,812 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:12:23,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:12:23,812 INFO L82 PathProgramCache]: Analyzing trace with hash -367513463, now seen corresponding path program 1 times [2020-10-15 04:12:23,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:12:23,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331814854] [2020-10-15 04:12:23,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:12:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:23,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:23,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:23,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:24,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:24,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:24,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:24,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:24,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:24,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:24,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:24,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:24,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:24,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:29,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:29,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-15 04:12:29,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:12:29,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5356 [2020-10-15 04:12:29,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:29,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:29,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:12:29,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:12:29,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-15 04:12:29,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:12:29,773 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-15 04:12:29,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:12:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:29,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:29,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:29,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:12:29,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:12:29,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 04:12:29,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:29,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:29,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:12:29,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:12:29,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:12:29,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:12:29,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:12:29,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331814854] [2020-10-15 04:12:29,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:12:29,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:12:29,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280793426] [2020-10-15 04:12:29,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:12:29,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:12:29,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:12:29,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:12:29,922 INFO L87 Difference]: Start difference. First operand 161328 states and 235944 transitions. Second operand 5 states. [2020-10-15 04:12:51,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:12:51,817 INFO L93 Difference]: Finished difference Result 470789 states and 686098 transitions. [2020-10-15 04:12:51,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:12:51,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 336 [2020-10-15 04:12:51,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:12:52,156 INFO L225 Difference]: With dead ends: 470789 [2020-10-15 04:12:52,157 INFO L226 Difference]: Without dead ends: 316239 [2020-10-15 04:12:52,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:12:52,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316239 states.