/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:28:02,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:28:02,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:28:02,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:28:02,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:28:02,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:28:02,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:28:02,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:28:02,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:28:02,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:28:02,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:28:02,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:28:02,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:28:02,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:28:02,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:28:02,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:28:02,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:28:02,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:28:02,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:28:02,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:28:02,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:28:02,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:28:02,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:28:02,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:28:02,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:28:02,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:28:02,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:28:02,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:28:02,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:28:02,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:28:02,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:28:02,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:28:02,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:28:02,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:28:02,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:28:02,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:28:02,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:28:02,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:28:02,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:28:02,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:28:02,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:28:02,778 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:28:02,802 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:28:02,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:28:02,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:28:02,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:28:02,805 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:28:02,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:28:02,805 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:28:02,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:28:02,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:28:02,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:28:02,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:28:02,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:28:02,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:28:02,807 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:28:02,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:28:02,807 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:28:02,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:28:02,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:28:02,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:28:02,808 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:28:02,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:28:02,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:28:02,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:28:02,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:28:02,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:28:02,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:28:02,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:28:02,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:28:02,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:28:02,810 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:28:03,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:28:03,239 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:28:03,244 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:28:03,246 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:28:03,246 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:28:03,247 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label58.c [2020-10-13 08:28:03,318 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/397234feb/3f94e521f5a6466e97bde69fce25f373/FLAGf8720b8fc [2020-10-13 08:28:04,250 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:28:04,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label58.c [2020-10-13 08:28:04,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/397234feb/3f94e521f5a6466e97bde69fce25f373/FLAGf8720b8fc [2020-10-13 08:28:04,672 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/397234feb/3f94e521f5a6466e97bde69fce25f373 [2020-10-13 08:28:04,685 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:28:04,688 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:28:04,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:28:04,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:28:04,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:28:04,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:28:04" (1/1) ... [2020-10-13 08:28:04,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:28:04, skipping insertion in model container [2020-10-13 08:28:04,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:28:04" (1/1) ... [2020-10-13 08:28:04,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:28:04,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:28:06,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:28:06,576 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:28:07,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:28:07,245 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:28:07,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:28:07 WrapperNode [2020-10-13 08:28:07,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:28:07,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:28:07,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:28:07,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:28:07,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:28:07" (1/1) ... [2020-10-13 08:28:07,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:28:07" (1/1) ... [2020-10-13 08:28:07,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:28:07" (1/1) ... [2020-10-13 08:28:07,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:28:07" (1/1) ... [2020-10-13 08:28:07,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:28:07" (1/1) ... [2020-10-13 08:28:07,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:28:07" (1/1) ... [2020-10-13 08:28:07,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:28:07" (1/1) ... [2020-10-13 08:28:07,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:28:07,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:28:07,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:28:07,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:28:07,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:28:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:28:07,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:28:07,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:28:07,667 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:28:07,667 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:28:07,668 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:28:07,669 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:28:07,669 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:28:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:28:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:28:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:28:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:28:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:28:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:28:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:28:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:28:07,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:28:07,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:28:13,047 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:28:13,047 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:28:13,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:28:13 BoogieIcfgContainer [2020-10-13 08:28:13,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:28:13,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:28:13,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:28:13,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:28:13,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:28:04" (1/3) ... [2020-10-13 08:28:13,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a33316f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:28:13, skipping insertion in model container [2020-10-13 08:28:13,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:28:07" (2/3) ... [2020-10-13 08:28:13,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a33316f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:28:13, skipping insertion in model container [2020-10-13 08:28:13,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:28:13" (3/3) ... [2020-10-13 08:28:13,085 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label58.c [2020-10-13 08:28:13,101 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:28:13,116 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:28:13,138 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:28:13,182 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:28:13,183 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:28:13,183 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:28:13,183 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:28:13,183 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:28:13,183 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:28:13,184 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:28:13,184 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:28:13,244 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:28:13,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 08:28:13,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:28:13,256 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] [2020-10-13 08:28:13,257 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:28:13,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:28:13,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1318681533, now seen corresponding path program 1 times [2020-10-13 08:28:13,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:28:13,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692132894] [2020-10-13 08:28:13,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:28:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:13,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:13,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:13,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 08:28:13,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:13,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-13 08:28:13,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:13,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:28:13,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:28:13,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 08:28:13,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:28:14,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:28:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:14,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:14,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:14,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:28:14,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:14,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:28:14,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:14,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:28:14,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:14,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:28:14,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:28:14,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:28:14,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692132894] [2020-10-13 08:28:14,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:28:14,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:28:14,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964804039] [2020-10-13 08:28:14,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:28:14,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:28:14,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:28:14,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:28:14,223 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-13 08:28:24,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:28:24,800 INFO L93 Difference]: Finished difference Result 2487 states and 4748 transitions. [2020-10-13 08:28:24,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:28:24,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-13 08:28:24,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:28:24,840 INFO L225 Difference]: With dead ends: 2487 [2020-10-13 08:28:24,840 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:28:24,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:28:24,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:28:25,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1564. [2020-10-13 08:28:25,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-10-13 08:28:25,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2484 transitions. [2020-10-13 08:28:25,044 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2484 transitions. Word has length 40 [2020-10-13 08:28:25,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:28:25,045 INFO L479 AbstractCegarLoop]: Abstraction has 1564 states and 2484 transitions. [2020-10-13 08:28:25,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:28:25,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2484 transitions. [2020-10-13 08:28:25,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 08:28:25,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:28:25,052 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:28:25,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:28:25,053 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:28:25,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:28:25,054 INFO L82 PathProgramCache]: Analyzing trace with hash -946617027, now seen corresponding path program 1 times [2020-10-13 08:28:25,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:28:25,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951366517] [2020-10-13 08:28:25,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:28:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:25,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:25,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:26,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:26,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 08:28:26,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:28:26,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1437 [2020-10-13 08:28:26,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:26,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:28:26,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 08:28:26,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 08:28:26,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:28:26,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:28:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:26,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:26,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:26,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:28:26,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:26,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:28:26,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:26,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:26,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:26,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:26,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:28:26,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:28:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:26,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:26,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:26,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:28:26,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:26,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 08:28:26,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:26,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:28:26,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:26,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 08:28:26,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-13 08:28:27,066 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:28:27,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951366517] [2020-10-13 08:28:27,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:28:27,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:28:27,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864125936] [2020-10-13 08:28:27,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:28:27,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:28:27,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:28:27,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:28:27,072 INFO L87 Difference]: Start difference. First operand 1564 states and 2484 transitions. Second operand 5 states. [2020-10-13 08:28:43,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:28:43,178 INFO L93 Difference]: Finished difference Result 4686 states and 7520 transitions. [2020-10-13 08:28:43,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:28:43,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 08:28:43,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:28:43,210 INFO L225 Difference]: With dead ends: 4686 [2020-10-13 08:28:43,211 INFO L226 Difference]: Without dead ends: 3128 [2020-10-13 08:28:43,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:28:43,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states. [2020-10-13 08:28:43,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 3120. [2020-10-13 08:28:43,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3120 states. [2020-10-13 08:28:43,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 4527 transitions. [2020-10-13 08:28:43,370 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 4527 transitions. Word has length 119 [2020-10-13 08:28:43,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:28:43,374 INFO L479 AbstractCegarLoop]: Abstraction has 3120 states and 4527 transitions. [2020-10-13 08:28:43,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:28:43,375 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 4527 transitions. [2020-10-13 08:28:43,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 08:28:43,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:28:43,388 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:28:43,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:28:43,389 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:28:43,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:28:43,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1297731757, now seen corresponding path program 1 times [2020-10-13 08:28:43,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:28:43,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68056546] [2020-10-13 08:28:43,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:28:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:43,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:43,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:44,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:44,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:44,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 08:28:44,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:28:44,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1275 [2020-10-13 08:28:44,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:44,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:28:44,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 08:28:44,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 08:28:44,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:44,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:28:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:44,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:44,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:44,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:28:44,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:44,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:28:44,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:44,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:44,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:44,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:44,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:28:44,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:28:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:44,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:45,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:45,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 08:28:45,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:45,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-13 08:28:45,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:45,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:28:45,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:45,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 08:28:45,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:28:45,193 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:28:45,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68056546] [2020-10-13 08:28:45,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:28:45,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:28:45,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725937671] [2020-10-13 08:28:45,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:28:45,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:28:45,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:28:45,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:28:45,201 INFO L87 Difference]: Start difference. First operand 3120 states and 4527 transitions. Second operand 5 states. [2020-10-13 08:28:57,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:28:57,752 INFO L93 Difference]: Finished difference Result 9373 states and 13796 transitions. [2020-10-13 08:28:57,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:28:57,756 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-13 08:28:57,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:28:57,805 INFO L225 Difference]: With dead ends: 9373 [2020-10-13 08:28:57,806 INFO L226 Difference]: Without dead ends: 6259 [2020-10-13 08:28:57,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:28:57,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6259 states. [2020-10-13 08:28:58,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6259 to 6251. [2020-10-13 08:28:58,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6251 states. [2020-10-13 08:28:58,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6251 states to 6251 states and 9087 transitions. [2020-10-13 08:28:58,063 INFO L78 Accepts]: Start accepts. Automaton has 6251 states and 9087 transitions. Word has length 127 [2020-10-13 08:28:58,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:28:58,064 INFO L479 AbstractCegarLoop]: Abstraction has 6251 states and 9087 transitions. [2020-10-13 08:28:58,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:28:58,065 INFO L276 IsEmpty]: Start isEmpty. Operand 6251 states and 9087 transitions. [2020-10-13 08:28:58,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-13 08:28:58,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:28:58,068 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:28:58,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:28:58,069 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:28:58,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:28:58,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1898068728, now seen corresponding path program 1 times [2020-10-13 08:28:58,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:28:58,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984033664] [2020-10-13 08:28:58,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:28:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:58,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:58,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:59,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:59,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 08:28:59,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:28:59,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1391 [2020-10-13 08:28:59,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:59,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:28:59,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-13 08:28:59,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 08:28:59,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:59,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:28:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:59,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:59,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:59,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:28:59,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:59,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:28:59,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:59,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:59,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:59,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:59,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:28:59,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:28:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:59,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:59,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:59,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 08:28:59,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:59,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-13 08:28:59,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:59,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:28:59,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:59,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-13 08:28:59,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:59,984 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:28:59,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984033664] [2020-10-13 08:28:59,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:28:59,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:28:59,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946309405] [2020-10-13 08:28:59,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:28:59,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:28:59,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:29:00,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:29:00,001 INFO L87 Difference]: Start difference. First operand 6251 states and 9087 transitions. Second operand 5 states. [2020-10-13 08:29:12,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:29:12,600 INFO L93 Difference]: Finished difference Result 18696 states and 27618 transitions. [2020-10-13 08:29:12,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:29:12,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-13 08:29:12,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:29:12,659 INFO L225 Difference]: With dead ends: 18696 [2020-10-13 08:29:12,659 INFO L226 Difference]: Without dead ends: 12451 [2020-10-13 08:29:12,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:29:12,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12451 states. [2020-10-13 08:29:12,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12451 to 12439. [2020-10-13 08:29:12,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12439 states. [2020-10-13 08:29:13,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12439 states to 12439 states and 16321 transitions. [2020-10-13 08:29:13,035 INFO L78 Accepts]: Start accepts. Automaton has 12439 states and 16321 transitions. Word has length 164 [2020-10-13 08:29:13,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:29:13,035 INFO L479 AbstractCegarLoop]: Abstraction has 12439 states and 16321 transitions. [2020-10-13 08:29:13,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:29:13,036 INFO L276 IsEmpty]: Start isEmpty. Operand 12439 states and 16321 transitions. [2020-10-13 08:29:13,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-13 08:29:13,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:29:13,044 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:29:13,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:29:13,044 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:29:13,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:29:13,045 INFO L82 PathProgramCache]: Analyzing trace with hash -414441575, now seen corresponding path program 1 times [2020-10-13 08:29:13,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:29:13,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953065086] [2020-10-13 08:29:13,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:29:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:13,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:13,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:14,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:14,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-13 08:29:14,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:29:14,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 988 [2020-10-13 08:29:14,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:29:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-13 08:29:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 08:29:14,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:14,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:29:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:14,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:14,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:14,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:29:14,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:14,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:29:14,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:14,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:14,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:14,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:14,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:14,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:29:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:14,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:14,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:14,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 08:29:14,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:14,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-13 08:29:14,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:14,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:29:14,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:14,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-13 08:29:14,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:29:14,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953065086] [2020-10-13 08:29:14,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:29:14,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:29:14,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109809234] [2020-10-13 08:29:14,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:29:14,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:29:14,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:29:14,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:29:14,481 INFO L87 Difference]: Start difference. First operand 12439 states and 16321 transitions. Second operand 5 states. [2020-10-13 08:29:26,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:29:26,561 INFO L93 Difference]: Finished difference Result 34174 states and 46665 transitions. [2020-10-13 08:29:26,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:29:26,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-13 08:29:26,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:29:26,642 INFO L225 Difference]: With dead ends: 34174 [2020-10-13 08:29:26,644 INFO L226 Difference]: Without dead ends: 21741 [2020-10-13 08:29:26,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:29:26,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21741 states. [2020-10-13 08:29:27,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21741 to 20966. [2020-10-13 08:29:27,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20966 states. [2020-10-13 08:29:27,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20966 states to 20966 states and 26938 transitions. [2020-10-13 08:29:27,202 INFO L78 Accepts]: Start accepts. Automaton has 20966 states and 26938 transitions. Word has length 185 [2020-10-13 08:29:27,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:29:27,203 INFO L479 AbstractCegarLoop]: Abstraction has 20966 states and 26938 transitions. [2020-10-13 08:29:27,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:29:27,203 INFO L276 IsEmpty]: Start isEmpty. Operand 20966 states and 26938 transitions. [2020-10-13 08:29:27,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-13 08:29:27,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:29:27,208 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:29:27,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:29:27,209 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:29:27,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:29:27,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1654984716, now seen corresponding path program 1 times [2020-10-13 08:29:27,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:29:27,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924441892] [2020-10-13 08:29:27,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:29:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:27,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:27,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:28,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:28,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:30,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:30,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:30,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-13 08:29:30,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:29:30,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3712 [2020-10-13 08:29:30,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:30,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:29:30,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 08:29:30,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 08:29:30,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:31,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:29:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:31,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:31,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:31,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:29:31,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:31,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:29:31,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:31,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:31,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:31,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:31,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:29:31,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:29:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:31,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:31,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:31,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:29:31,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:31,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:29:31,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:31,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:31,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:31,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:31,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:29:31,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 08:29:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:31,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:31,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:31,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:29:31,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:31,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 08:29:31,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:31,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:29:31,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:31,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 08:29:31,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:31,279 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 08:29:31,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924441892] [2020-10-13 08:29:31,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:29:31,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:29:31,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371525437] [2020-10-13 08:29:31,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:29:31,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:29:31,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:29:31,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:29:31,282 INFO L87 Difference]: Start difference. First operand 20966 states and 26938 transitions. Second operand 5 states. [2020-10-13 08:29:42,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:29:42,815 INFO L93 Difference]: Finished difference Result 51219 states and 68276 transitions. [2020-10-13 08:29:42,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:29:42,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-13 08:29:42,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:29:42,941 INFO L225 Difference]: With dead ends: 51219 [2020-10-13 08:29:42,941 INFO L226 Difference]: Without dead ends: 30259 [2020-10-13 08:29:42,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:29:43,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30259 states. [2020-10-13 08:29:44,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30259 to 29484. [2020-10-13 08:29:44,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29484 states. [2020-10-13 08:29:44,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29484 states to 29484 states and 37480 transitions. [2020-10-13 08:29:44,761 INFO L78 Accepts]: Start accepts. Automaton has 29484 states and 37480 transitions. Word has length 205 [2020-10-13 08:29:44,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:29:44,762 INFO L479 AbstractCegarLoop]: Abstraction has 29484 states and 37480 transitions. [2020-10-13 08:29:44,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:29:44,762 INFO L276 IsEmpty]: Start isEmpty. Operand 29484 states and 37480 transitions. [2020-10-13 08:29:44,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-13 08:29:44,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:29:44,771 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:29:44,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:29:44,771 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:29:44,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:29:44,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1475009189, now seen corresponding path program 1 times [2020-10-13 08:29:44,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:29:44,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330636360] [2020-10-13 08:29:44,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:29:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:44,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:44,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:45,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:45,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:48,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:49,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:49,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-13 08:29:49,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:29:49,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 08:29:49,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:49,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:29:49,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 214 [2020-10-13 08:29:49,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 08:29:49,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:49,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:29:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:49,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:49,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:49,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:29:49,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:49,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:29:49,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:49,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:49,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:49,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:49,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:50,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:29:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:50,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:50,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:50,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:29:50,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:50,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 08:29:50,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:50,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:50,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:50,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:50,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:29:50,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 08:29:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:50,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:50,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:50,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 08:29:50,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:50,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-13 08:29:50,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:50,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:29:50,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:50,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 08:29:50,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:50,468 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 08:29:50,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330636360] [2020-10-13 08:29:50,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:29:50,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:29:50,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861358459] [2020-10-13 08:29:50,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:29:50,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:29:50,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:29:50,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:29:50,473 INFO L87 Difference]: Start difference. First operand 29484 states and 37480 transitions. Second operand 5 states. [2020-10-13 08:29:59,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:29:59,745 INFO L93 Difference]: Finished difference Result 58981 states and 75065 transitions. [2020-10-13 08:29:59,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:29:59,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 242 [2020-10-13 08:29:59,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:29:59,851 INFO L225 Difference]: With dead ends: 58981 [2020-10-13 08:29:59,851 INFO L226 Difference]: Without dead ends: 29492 [2020-10-13 08:29:59,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:29:59,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29492 states. [2020-10-13 08:30:00,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29492 to 29484. [2020-10-13 08:30:00,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29484 states. [2020-10-13 08:30:00,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29484 states to 29484 states and 37476 transitions. [2020-10-13 08:30:00,452 INFO L78 Accepts]: Start accepts. Automaton has 29484 states and 37476 transitions. Word has length 242 [2020-10-13 08:30:00,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:30:00,453 INFO L479 AbstractCegarLoop]: Abstraction has 29484 states and 37476 transitions. [2020-10-13 08:30:00,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:30:00,453 INFO L276 IsEmpty]: Start isEmpty. Operand 29484 states and 37476 transitions. [2020-10-13 08:30:00,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-13 08:30:00,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:30:00,464 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:30:00,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:30:00,465 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:30:00,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:30:00,465 INFO L82 PathProgramCache]: Analyzing trace with hash 548096648, now seen corresponding path program 1 times [2020-10-13 08:30:00,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:30:00,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890638562] [2020-10-13 08:30:00,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:30:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:00,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:00,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:01,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:02,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:02,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 08:30:02,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:30:02,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1676 [2020-10-13 08:30:02,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:02,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:30:02,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-13 08:30:02,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 08:30:02,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:30:02,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:30:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:02,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:02,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:02,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:30:02,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:02,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:30:02,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:02,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:30:02,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:02,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:30:02,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:02,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:30:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:02,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:02,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:02,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 08:30:02,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:02,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 08:30:02,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:02,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:30:02,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:02,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:30:02,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:02,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-13 08:30:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:02,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:02,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:02,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 08:30:02,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:02,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 08:30:02,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:02,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:30:02,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:02,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 08:30:02,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:02,663 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-13 08:30:02,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890638562] [2020-10-13 08:30:02,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:30:02,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:30:02,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822306460] [2020-10-13 08:30:02,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:30:02,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:30:02,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:30:02,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:30:02,667 INFO L87 Difference]: Start difference. First operand 29484 states and 37476 transitions. Second operand 5 states. [2020-10-13 08:30:16,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:30:16,823 INFO L93 Difference]: Finished difference Result 71357 states and 94073 transitions. [2020-10-13 08:30:16,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:30:16,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 275 [2020-10-13 08:30:16,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:30:16,996 INFO L225 Difference]: With dead ends: 71357 [2020-10-13 08:30:16,996 INFO L226 Difference]: Without dead ends: 41879 [2020-10-13 08:30:17,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:30:17,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41879 states. [2020-10-13 08:30:17,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41879 to 41871. [2020-10-13 08:30:17,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41871 states. [2020-10-13 08:30:17,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41871 states to 41871 states and 53264 transitions. [2020-10-13 08:30:17,909 INFO L78 Accepts]: Start accepts. Automaton has 41871 states and 53264 transitions. Word has length 275 [2020-10-13 08:30:17,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:30:17,910 INFO L479 AbstractCegarLoop]: Abstraction has 41871 states and 53264 transitions. [2020-10-13 08:30:17,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:30:17,910 INFO L276 IsEmpty]: Start isEmpty. Operand 41871 states and 53264 transitions. [2020-10-13 08:30:17,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-13 08:30:17,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:30:17,925 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:30:17,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:30:17,925 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:30:17,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:30:17,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1595125927, now seen corresponding path program 1 times [2020-10-13 08:30:17,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:30:17,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249709820] [2020-10-13 08:30:17,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:30:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:18,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:18,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:19,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:19,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-13 08:30:19,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:30:19,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1210 [2020-10-13 08:30:19,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:30:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 272 [2020-10-13 08:30:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 08:30:19,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:19,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:30:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:19,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:19,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:19,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:30:19,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:19,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:30:19,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:19,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:30:19,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:19,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:30:19,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:19,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:30:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:19,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:19,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:19,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 08:30:19,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:19,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 08:30:19,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:19,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:30:19,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:19,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:30:19,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:19,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-13 08:30:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:19,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:19,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:19,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 08:30:19,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:19,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 08:30:19,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:19,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:30:19,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:19,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 08:30:19,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:19,712 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 08:30:19,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249709820] [2020-10-13 08:30:19,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:30:19,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:30:19,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306626158] [2020-10-13 08:30:19,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:30:19,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:30:19,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:30:19,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:30:19,720 INFO L87 Difference]: Start difference. First operand 41871 states and 53264 transitions. Second operand 5 states. [2020-10-13 08:30:38,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:30:38,853 INFO L93 Difference]: Finished difference Result 101530 states and 132931 transitions. [2020-10-13 08:30:38,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:30:38,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 300 [2020-10-13 08:30:38,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:30:39,129 INFO L225 Difference]: With dead ends: 101530 [2020-10-13 08:30:39,129 INFO L226 Difference]: Without dead ends: 59665 [2020-10-13 08:30:39,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:30:39,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59665 states. [2020-10-13 08:30:40,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59665 to 59661. [2020-10-13 08:30:40,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59661 states. [2020-10-13 08:30:40,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59661 states to 59661 states and 75962 transitions. [2020-10-13 08:30:40,933 INFO L78 Accepts]: Start accepts. Automaton has 59661 states and 75962 transitions. Word has length 300 [2020-10-13 08:30:40,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:30:40,935 INFO L479 AbstractCegarLoop]: Abstraction has 59661 states and 75962 transitions. [2020-10-13 08:30:40,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:30:40,935 INFO L276 IsEmpty]: Start isEmpty. Operand 59661 states and 75962 transitions. [2020-10-13 08:30:40,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-13 08:30:40,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:30:40,976 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:30:40,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:30:40,977 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:30:40,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:30:40,977 INFO L82 PathProgramCache]: Analyzing trace with hash 907471586, now seen corresponding path program 1 times [2020-10-13 08:30:40,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:30:40,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576655312] [2020-10-13 08:30:40,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:30:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:41,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:41,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:42,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:42,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:43,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:46,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:46,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-13 08:30:46,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:30:46,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-13 08:30:46,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:46,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:30:46,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 335 [2020-10-13 08:30:46,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 08:30:46,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:46,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:30:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:46,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:46,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:46,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:30:46,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:46,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:30:46,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:46,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:30:46,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:46,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:30:46,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:46,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:30:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:46,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:46,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:46,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 08:30:46,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:46,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:30:46,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:46,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:30:46,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:46,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:30:46,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:46,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-13 08:30:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:46,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:46,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:46,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 08:30:46,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:46,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-13 08:30:46,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:46,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:30:46,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:46,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-13 08:30:46,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:46,652 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-13 08:30:46,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576655312] [2020-10-13 08:30:46,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:30:46,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:30:46,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108185582] [2020-10-13 08:30:46,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:30:46,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:30:46,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:30:46,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:30:46,655 INFO L87 Difference]: Start difference. First operand 59661 states and 75962 transitions. Second operand 5 states. [2020-10-13 08:31:00,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:31:00,273 INFO L93 Difference]: Finished difference Result 118569 states and 151109 transitions. [2020-10-13 08:31:00,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:31:00,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 363 [2020-10-13 08:31:00,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:31:00,502 INFO L225 Difference]: With dead ends: 118569 [2020-10-13 08:31:00,502 INFO L226 Difference]: Without dead ends: 59665 [2020-10-13 08:31:00,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:31:00,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59665 states. [2020-10-13 08:31:01,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59665 to 59661. [2020-10-13 08:31:01,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59661 states. [2020-10-13 08:31:01,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59661 states to 59661 states and 75950 transitions. [2020-10-13 08:31:01,844 INFO L78 Accepts]: Start accepts. Automaton has 59661 states and 75950 transitions. Word has length 363 [2020-10-13 08:31:01,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:31:01,845 INFO L479 AbstractCegarLoop]: Abstraction has 59661 states and 75950 transitions. [2020-10-13 08:31:01,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:31:01,845 INFO L276 IsEmpty]: Start isEmpty. Operand 59661 states and 75950 transitions. [2020-10-13 08:31:01,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2020-10-13 08:31:01,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:31:01,973 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:31:01,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:31:01,974 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:31:01,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:31:01,975 INFO L82 PathProgramCache]: Analyzing trace with hash 178532517, now seen corresponding path program 1 times [2020-10-13 08:31:01,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:31:01,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525305878] [2020-10-13 08:31:01,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:31:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:02,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:03,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:04,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:04,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:07,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:07,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 740 [2020-10-13 08:31:07,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:31:07,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-13 08:31:07,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:07,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:31:07,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 694 [2020-10-13 08:31:07,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 08:31:07,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:07,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:31:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:07,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:07,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:07,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:31:07,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:07,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:31:07,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:07,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:31:07,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:07,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:31:07,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:07,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:31:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:07,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:07,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:07,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 08:31:07,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:07,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 08:31:07,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:07,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:31:07,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:07,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:31:07,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:07,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 08:31:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:07,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:08,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:08,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 604 [2020-10-13 08:31:08,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:08,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-10-13 08:31:08,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:08,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:31:08,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:08,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 592 [2020-10-13 08:31:08,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:08,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:31:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:08,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:08,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:08,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-13 08:31:08,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:08,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-13 08:31:08,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:08,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:31:08,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:08,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 307 [2020-10-13 08:31:08,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:08,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:31:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:08,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:09,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:09,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:31:09,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:09,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 08:31:09,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:09,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:31:09,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:09,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 08:31:09,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:31:09,848 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-13 08:31:09,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525305878] [2020-10-13 08:31:09,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:31:09,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:31:09,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066452251] [2020-10-13 08:31:09,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:31:09,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:31:09,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:31:09,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:31:09,852 INFO L87 Difference]: Start difference. First operand 59661 states and 75950 transitions. Second operand 6 states. [2020-10-13 08:31:27,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:31:27,851 INFO L93 Difference]: Finished difference Result 118569 states and 151091 transitions. [2020-10-13 08:31:27,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:31:27,854 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 724 [2020-10-13 08:31:27,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:31:28,024 INFO L225 Difference]: With dead ends: 118569 [2020-10-13 08:31:28,025 INFO L226 Difference]: Without dead ends: 59665 [2020-10-13 08:31:28,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:31:28,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59665 states. [2020-10-13 08:31:28,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59665 to 59661. [2020-10-13 08:31:28,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59661 states. [2020-10-13 08:31:28,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59661 states to 59661 states and 75930 transitions. [2020-10-13 08:31:28,936 INFO L78 Accepts]: Start accepts. Automaton has 59661 states and 75930 transitions. Word has length 724 [2020-10-13 08:31:28,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:31:28,937 INFO L479 AbstractCegarLoop]: Abstraction has 59661 states and 75930 transitions. [2020-10-13 08:31:28,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:31:28,938 INFO L276 IsEmpty]: Start isEmpty. Operand 59661 states and 75930 transitions. [2020-10-13 08:31:29,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2020-10-13 08:31:29,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:31:29,011 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:31:29,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:31:29,011 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:31:29,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:31:29,012 INFO L82 PathProgramCache]: Analyzing trace with hash -629469169, now seen corresponding path program 1 times [2020-10-13 08:31:29,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:31:29,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158536310] [2020-10-13 08:31:29,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:31:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:29,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:29,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:34,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:34,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 903 [2020-10-13 08:31:34,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:31:34,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5108 [2020-10-13 08:31:34,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:34,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:31:34,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:31:34,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-13 08:31:34,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:34,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:31:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:34,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:34,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:34,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:31:34,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:34,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:31:34,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:34,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:31:34,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:34,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:31:34,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:34,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:31:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:34,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:34,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:34,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 08:31:34,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:34,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-13 08:31:34,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:34,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:31:34,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:31:34,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-13 08:31:34,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:34,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-13 08:31:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:35,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:35,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:35,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 699 [2020-10-13 08:31:35,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:35,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-13 08:31:35,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:35,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:31:35,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 696 [2020-10-13 08:31:35,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:31:35,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:35,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:31:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:35,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:35,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:35,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-13 08:31:35,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:35,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 08:31:35,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:35,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:31:35,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:35,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:31:35,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:35,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:31:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:35,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:35,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:35,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 08:31:35,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:35,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 08:31:35,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:35,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:31:35,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:35,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:31:35,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:37,865 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 66 proven. 148 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:31:37,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158536310] [2020-10-13 08:31:37,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:31:37,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:31:37,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221715022] [2020-10-13 08:31:37,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:31:37,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:31:37,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:31:37,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:31:37,871 INFO L87 Difference]: Start difference. First operand 59661 states and 75930 transitions. Second operand 7 states.