/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 SingleStatement --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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:30:25,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:30:25,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:30:25,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:30:25,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:30:25,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:30:25,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:30:25,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:30:25,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:30:25,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:30:25,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:30:25,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:30:25,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:30:25,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:30:25,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:30:25,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:30:25,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:30:25,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:30:25,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:30:25,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:30:25,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:30:25,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:30:25,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:30:25,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:30:25,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:30:25,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:30:25,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:30:25,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:30:25,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:30:25,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:30:25,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:30:25,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:30:25,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:30:25,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:30:25,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:30:25,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:30:25,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:30:25,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:30:25,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:30:25,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:30:25,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:30:25,777 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 [2020-09-25 03:30:25,804 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:30:25,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:30:25,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:30:25,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:30:25,806 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:30:25,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:30:25,807 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:30:25,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:30:25,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:30:25,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:30:25,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:30:25,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:30:25,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:30:25,808 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:30:25,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:30:25,808 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:30:25,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:30:25,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:30:25,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:30:25,809 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:30:25,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:30:25,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:30:25,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:30:25,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:30:25,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:30:25,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:30:25,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:30:25,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:30:25,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:30:25,811 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 -> SingleStatement 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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=true; [2020-09-25 03:30:26,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:30:26,336 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:30:26,340 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:30:26,342 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:30:26,343 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:30:26,344 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 03:30:26,421 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82d802db4/8f64ee218ebd480fbde41761e5066d61/FLAG27535b5d7 [2020-09-25 03:30:27,006 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:30:27,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 03:30:27,024 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82d802db4/8f64ee218ebd480fbde41761e5066d61/FLAG27535b5d7 [2020-09-25 03:30:27,273 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82d802db4/8f64ee218ebd480fbde41761e5066d61 [2020-09-25 03:30:27,287 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:30:27,293 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:30:27,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:30:27,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:30:27,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:30:27,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:30:27" (1/1) ... [2020-09-25 03:30:27,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b8831ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:30:27, skipping insertion in model container [2020-09-25 03:30:27,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:30:27" (1/1) ... [2020-09-25 03:30:27,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:30:27,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:30:27,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:30:28,006 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:30:28,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:30:28,220 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:30:28,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:30:28 WrapperNode [2020-09-25 03:30:28,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:30:28,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:30:28,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:30:28,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:30:28,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:30:28" (1/1) ... [2020-09-25 03:30:28,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:30:28" (1/1) ... [2020-09-25 03:30:28,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:30:28" (1/1) ... [2020-09-25 03:30:28,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:30:28" (1/1) ... [2020-09-25 03:30:28,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:30:28" (1/1) ... [2020-09-25 03:30:28,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:30:28" (1/1) ... [2020-09-25 03:30:28,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:30:28" (1/1) ... [2020-09-25 03:30:28,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:30:28,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:30:28,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:30:28,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:30:28,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:30:28" (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 [2020-09-25 03:30:28,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:30:28,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:30:28,429 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 03:30:28,430 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:30:28,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:30:28,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 03:30:28,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-25 03:30:28,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 03:30:28,431 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 03:30:28,431 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 03:30:28,431 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 03:30:28,431 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 03:30:28,431 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 03:30:28,432 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 03:30:28,432 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 03:30:28,432 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 03:30:28,432 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 03:30:28,432 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 03:30:28,433 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:30:28,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:30:28,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:30:30,039 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:30:30,039 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:30:30,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:30:30 BoogieIcfgContainer [2020-09-25 03:30:30,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:30:30,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:30:30,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:30:30,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:30:30,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:30:27" (1/3) ... [2020-09-25 03:30:30,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ac07f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:30:30, skipping insertion in model container [2020-09-25 03:30:30,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:30:28" (2/3) ... [2020-09-25 03:30:30,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ac07f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:30:30, skipping insertion in model container [2020-09-25 03:30:30,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:30:30" (3/3) ... [2020-09-25 03:30:30,061 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-25 03:30:30,072 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:30:30,084 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:30:30,108 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:30:30,145 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:30:30,145 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:30:30,145 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:30:30,146 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:30:30,146 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:30:30,146 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:30:30,146 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:30:30,146 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:30:30,188 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states. [2020-09-25 03:30:30,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-09-25 03:30:30,219 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:30:30,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:30:30,221 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:30:30,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:30:30,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1632941541, now seen corresponding path program 1 times [2020-09-25 03:30:30,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:30:30,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516146919] [2020-09-25 03:30:30,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:30:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:30:31,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:31,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:31,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:31,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:32,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:32,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:32,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:34,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:35,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:35,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:30:35,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 456 [2020-09-25 03:30:35,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:30:35,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-09-25 03:30:35,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:30:35,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:30:35,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-09-25 03:30:35,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-09-25 03:30:35,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 03:30:36,635 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-25 03:30:36,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:30:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:30:36,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:36,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:30:36,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 03:30:36,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:30:36,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 03:30:36,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:30:36,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:30:36,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:30:36,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:30:36,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:30:37,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:30:37,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516146919] [2020-09-25 03:30:37,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:30:37,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:30:37,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138049409] [2020-09-25 03:30:37,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:30:37,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:30:37,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:30:37,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:30:37,147 INFO L87 Difference]: Start difference. First operand 903 states. Second operand 4 states. [2020-09-25 03:30:40,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:30:40,691 INFO L93 Difference]: Finished difference Result 1657 states and 2169 transitions. [2020-09-25 03:30:40,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 03:30:40,694 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 449 [2020-09-25 03:30:40,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:30:40,726 INFO L225 Difference]: With dead ends: 1657 [2020-09-25 03:30:40,727 INFO L226 Difference]: Without dead ends: 1241 [2020-09-25 03:30:40,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:30:40,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2020-09-25 03:30:40,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1234. [2020-09-25 03:30:40,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1234 states. [2020-09-25 03:30:40,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1513 transitions. [2020-09-25 03:30:40,906 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1513 transitions. Word has length 449 [2020-09-25 03:30:40,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:30:40,908 INFO L479 AbstractCegarLoop]: Abstraction has 1234 states and 1513 transitions. [2020-09-25 03:30:40,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:30:40,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1513 transitions. [2020-09-25 03:30:40,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-09-25 03:30:40,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:30:40,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:30:40,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:30:40,925 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:30:40,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:30:40,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1248222459, now seen corresponding path program 1 times [2020-09-25 03:30:40,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:30:40,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341361226] [2020-09-25 03:30:40,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:30:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:30:41,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:41,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:41,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:41,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:41,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:41,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:42,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:44,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:45,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:46,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:30:46,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 456 [2020-09-25 03:30:46,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:30:46,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-09-25 03:30:46,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:30:46,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:30:46,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 201 [2020-09-25 03:30:46,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-09-25 03:30:46,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:30:46,533 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-25 03:30:46,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:30:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:30:46,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:46,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:30:46,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 03:30:46,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:30:46,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 03:30:46,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:30:46,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:30:46,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:30:46,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:30:46,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:30:46,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:30:46,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341361226] [2020-09-25 03:30:46,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:30:46,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:30:46,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591149365] [2020-09-25 03:30:46,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:30:46,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:30:46,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:30:46,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:30:46,836 INFO L87 Difference]: Start difference. First operand 1234 states and 1513 transitions. Second operand 4 states. [2020-09-25 03:30:50,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:30:50,180 INFO L93 Difference]: Finished difference Result 2498 states and 3152 transitions. [2020-09-25 03:30:50,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 03:30:50,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 449 [2020-09-25 03:30:50,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:30:50,204 INFO L225 Difference]: With dead ends: 2498 [2020-09-25 03:30:50,205 INFO L226 Difference]: Without dead ends: 2052 [2020-09-25 03:30:50,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:30:50,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2052 states. [2020-09-25 03:30:50,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2052 to 2040. [2020-09-25 03:30:50,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2040 states. [2020-09-25 03:30:50,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 2543 transitions. [2020-09-25 03:30:50,303 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 2543 transitions. Word has length 449 [2020-09-25 03:30:50,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:30:50,305 INFO L479 AbstractCegarLoop]: Abstraction has 2040 states and 2543 transitions. [2020-09-25 03:30:50,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:30:50,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 2543 transitions. [2020-09-25 03:30:50,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-09-25 03:30:50,326 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:30:50,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:30:50,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:30:50,328 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:30:50,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:30:50,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1103013733, now seen corresponding path program 1 times [2020-09-25 03:30:50,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:30:50,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205735703] [2020-09-25 03:30:50,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:30:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:30:50,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:50,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:51,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:51,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:51,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:51,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:52,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:52,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:55,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:55,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:30:55,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 456 [2020-09-25 03:30:55,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:30:55,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-09-25 03:30:55,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:30:55,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:30:55,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-09-25 03:30:55,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 03:30:55,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:30:55,911 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-25 03:30:55,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:30:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:30:55,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:30:55,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:30:55,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 03:30:55,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:30:55,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 03:30:55,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:30:55,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:30:55,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:30:55,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:30:55,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:30:56,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:30:56,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205735703] [2020-09-25 03:30:56,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:30:56,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:30:56,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525505960] [2020-09-25 03:30:56,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:30:56,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:30:56,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:30:56,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:30:56,236 INFO L87 Difference]: Start difference. First operand 2040 states and 2543 transitions. Second operand 5 states. [2020-09-25 03:31:00,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:31:00,456 INFO L93 Difference]: Finished difference Result 5622 states and 7071 transitions. [2020-09-25 03:31:00,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:31:00,456 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 449 [2020-09-25 03:31:00,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:31:00,473 INFO L225 Difference]: With dead ends: 5622 [2020-09-25 03:31:00,473 INFO L226 Difference]: Without dead ends: 3786 [2020-09-25 03:31:00,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:31:00,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2020-09-25 03:31:00,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3784. [2020-09-25 03:31:00,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3784 states. [2020-09-25 03:31:00,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 4723 transitions. [2020-09-25 03:31:00,590 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 4723 transitions. Word has length 449 [2020-09-25 03:31:00,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:31:00,591 INFO L479 AbstractCegarLoop]: Abstraction has 3784 states and 4723 transitions. [2020-09-25 03:31:00,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:31:00,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 4723 transitions. [2020-09-25 03:31:00,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2020-09-25 03:31:00,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:31:00,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:31:00,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:31:00,605 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:31:00,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:31:00,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1835563254, now seen corresponding path program 1 times [2020-09-25 03:31:00,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:31:00,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299365825] [2020-09-25 03:31:00,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:31:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:31:00,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:31:00,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:31:01,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:31:01,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:31:01,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:31:01,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:31:02,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:31:02,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:31:05,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:31:05,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:31:05,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 457 [2020-09-25 03:31:05,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:31:05,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 03:31:05,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:31:05,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:31:05,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-09-25 03:31:05,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-09-25 03:31:05,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:31:06,205 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-25 03:31:06,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:31:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:31:06,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:31:06,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:31:06,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 03:31:06,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:31:06,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 03:31:06,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:31:06,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:31:06,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:31:06,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:31:06,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:31:06,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:31:06,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299365825] [2020-09-25 03:31:06,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:31:06,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:31:06,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668146707] [2020-09-25 03:31:06,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:31:06,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:31:06,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:31:06,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:31:06,569 INFO L87 Difference]: Start difference. First operand 3784 states and 4723 transitions. Second operand 5 states. [2020-09-25 03:31:12,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:31:12,300 INFO L93 Difference]: Finished difference Result 10682 states and 13387 transitions. [2020-09-25 03:31:12,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:31:12,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 450 [2020-09-25 03:31:12,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:31:12,348 INFO L225 Difference]: With dead ends: 10682 [2020-09-25 03:31:12,348 INFO L226 Difference]: Without dead ends: 7117 [2020-09-25 03:31:12,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:31:12,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7117 states.