/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/Problem11_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:05:20,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:05:20,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:05:20,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:05:20,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:05:20,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:05:20,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:05:20,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:05:20,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:05:20,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:05:20,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:05:20,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:05:20,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:05:20,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:05:20,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:05:20,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:05:20,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:05:20,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:05:20,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:05:20,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:05:20,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:05:20,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:05:20,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:05:20,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:05:20,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:05:20,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:05:20,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:05:20,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:05:20,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:05:20,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:05:20,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:05:20,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:05:20,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:05:20,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:05:20,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:05:20,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:05:20,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:05:20,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:05:20,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:05:20,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:05:20,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:05:20,762 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 08:05:20,801 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:05:20,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:05:20,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:05:20,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:05:20,804 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:05:20,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:05:20,804 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:05:20,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:05:20,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:05:20,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:05:20,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:05:20,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:05:20,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:05:20,807 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:05:20,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:05:20,807 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:05:20,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:05:20,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:05:20,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:05:20,808 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:05:20,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:05:20,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:05:20,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:05:20,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:05:20,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:05:20,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:05:20,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:05:20,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:05:20,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:05:20,810 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 08:05:21,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:05:21,168 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:05:21,171 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:05:21,173 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:05:21,174 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:05:21,174 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label05.c [2020-10-13 08:05:21,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ae27a5be/c5b91a5f33f845f5b94463c8c71f59c6/FLAGa337dd6cc [2020-10-13 08:05:21,872 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:05:21,873 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label05.c [2020-10-13 08:05:21,890 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ae27a5be/c5b91a5f33f845f5b94463c8c71f59c6/FLAGa337dd6cc [2020-10-13 08:05:22,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ae27a5be/c5b91a5f33f845f5b94463c8c71f59c6 [2020-10-13 08:05:22,080 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:05:22,082 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:05:22,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:05:22,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:05:22,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:05:22,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:05:22" (1/1) ... [2020-10-13 08:05:22,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a18185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:22, skipping insertion in model container [2020-10-13 08:05:22,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:05:22" (1/1) ... [2020-10-13 08:05:22,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:05:22,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:05:22,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:05:22,872 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:05:23,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:05:23,108 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:05:23,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:23 WrapperNode [2020-10-13 08:05:23,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:05:23,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:05:23,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:05:23,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:05:23,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:23" (1/1) ... [2020-10-13 08:05:23,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:23" (1/1) ... [2020-10-13 08:05:23,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:23" (1/1) ... [2020-10-13 08:05:23,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:23" (1/1) ... [2020-10-13 08:05:23,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:23" (1/1) ... [2020-10-13 08:05:23,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:23" (1/1) ... [2020-10-13 08:05:23,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:23" (1/1) ... [2020-10-13 08:05:23,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:05:23,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:05:23,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:05:23,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:05:23,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:23" (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 08:05:23,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:05:23,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:05:23,319 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:05:23,319 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:05:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:05:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:05:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:05:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:05:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:05:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:05:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:05:25,117 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:05:25,118 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:05:25,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:05:25 BoogieIcfgContainer [2020-10-13 08:05:25,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:05:25,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:05:25,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:05:25,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:05:25,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:05:22" (1/3) ... [2020-10-13 08:05:25,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b06ac29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:05:25, skipping insertion in model container [2020-10-13 08:05:25,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:05:23" (2/3) ... [2020-10-13 08:05:25,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b06ac29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:05:25, skipping insertion in model container [2020-10-13 08:05:25,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:05:25" (3/3) ... [2020-10-13 08:05:25,135 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label05.c [2020-10-13 08:05:25,168 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:05:25,178 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:05:25,193 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:05:25,228 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:05:25,229 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:05:25,230 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:05:25,230 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:05:25,230 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:05:25,230 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:05:25,230 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:05:25,230 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:05:25,256 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-13 08:05:25,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 08:05:25,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:05:25,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:05:25,269 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:05:25,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:05:25,275 INFO L82 PathProgramCache]: Analyzing trace with hash 642669955, now seen corresponding path program 1 times [2020-10-13 08:05:25,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:05:25,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143946056] [2020-10-13 08:05:25,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:05:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:25,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:26,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:26,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 08:05:26,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:05:26,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-10-13 08:05:26,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:26,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:05:26,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:05:26,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 08:05:26,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:05:26,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:05:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:26,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:26,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:26,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:05:26,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:05:26,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:05:26,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:26,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:05:26,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:05:26,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:05:26,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:05:26,286 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 08:05:26,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143946056] [2020-10-13 08:05:26,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:05:26,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:05:26,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240223740] [2020-10-13 08:05:26,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:05:26,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:05:26,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:05:26,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:05:26,315 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-10-13 08:05:28,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:05:28,702 INFO L93 Difference]: Finished difference Result 806 states and 1404 transitions. [2020-10-13 08:05:28,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:05:28,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-13 08:05:28,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:05:28,724 INFO L225 Difference]: With dead ends: 806 [2020-10-13 08:05:28,725 INFO L226 Difference]: Without dead ends: 434 [2020-10-13 08:05:28,733 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 08:05:28,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-13 08:05:28,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 428. [2020-10-13 08:05:28,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-10-13 08:05:28,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 617 transitions. [2020-10-13 08:05:28,828 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 617 transitions. Word has length 70 [2020-10-13 08:05:28,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:05:28,829 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 617 transitions. [2020-10-13 08:05:28,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:05:28,829 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 617 transitions. [2020-10-13 08:05:28,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 08:05:28,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:05:28,838 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, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:05:28,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:05:28,838 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:05:28,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:05:28,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1962693410, now seen corresponding path program 1 times [2020-10-13 08:05:28,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:05:28,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567436566] [2020-10-13 08:05:28,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:05:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:28,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:29,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:29,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:30,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:30,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 08:05:30,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:05:30,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1437 [2020-10-13 08:05:30,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:30,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:05:30,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 08:05:30,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 08:05:30,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:05:30,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:05:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:30,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:30,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:30,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:05:30,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:05:30,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:05:30,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:30,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:05:30,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:05:30,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:05:30,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:05:30,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:05:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:30,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:30,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:30,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:05:30,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:05:30,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-13 08:05:30,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:05:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:05:30,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:05:30,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:05:30,797 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:05:30,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567436566] [2020-10-13 08:05:30,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:05:30,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:05:30,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97735688] [2020-10-13 08:05:30,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:05:30,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:05:30,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:05:30,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:05:30,811 INFO L87 Difference]: Start difference. First operand 428 states and 617 transitions. Second operand 5 states. [2020-10-13 08:05:34,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:05:34,685 INFO L93 Difference]: Finished difference Result 875 states and 1261 transitions. [2020-10-13 08:05:34,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:05:34,686 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-13 08:05:34,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:05:34,694 INFO L225 Difference]: With dead ends: 875 [2020-10-13 08:05:34,694 INFO L226 Difference]: Without dead ends: 432 [2020-10-13 08:05:34,697 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 08:05:34,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-10-13 08:05:34,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 428. [2020-10-13 08:05:34,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-10-13 08:05:34,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 615 transitions. [2020-10-13 08:05:34,730 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 615 transitions. Word has length 142 [2020-10-13 08:05:34,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:05:34,730 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 615 transitions. [2020-10-13 08:05:34,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:05:34,731 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 615 transitions. [2020-10-13 08:05:34,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-13 08:05:34,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:05:34,734 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, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:05:34,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:05:34,735 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:05:34,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:05:34,735 INFO L82 PathProgramCache]: Analyzing trace with hash 358837557, now seen corresponding path program 1 times [2020-10-13 08:05:34,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:05:34,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807262743] [2020-10-13 08:05:34,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:05:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:34,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:34,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:35,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:37,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:37,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 08:05:37,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:05:37,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2424 [2020-10-13 08:05:37,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:37,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:05:37,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 08:05:37,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 08:05:37,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:05:37,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:05:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:37,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:37,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:37,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:05:37,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:05:37,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:05:37,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:37,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:05:37,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:05:37,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:05:37,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:05:37,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:05:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:37,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:37,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:37,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:05:37,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:05:37,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 08:05:37,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:37,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:05:37,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:05:37,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 08:05:37,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:05:37,795 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:05:37,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807262743] [2020-10-13 08:05:37,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:05:37,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:05:37,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019664377] [2020-10-13 08:05:37,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:05:37,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:05:37,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:05:37,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:05:37,800 INFO L87 Difference]: Start difference. First operand 428 states and 615 transitions. Second operand 8 states. [2020-10-13 08:05:40,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:05:40,607 INFO L93 Difference]: Finished difference Result 980 states and 1372 transitions. [2020-10-13 08:05:40,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 08:05:40,610 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 143 [2020-10-13 08:05:40,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:05:40,615 INFO L225 Difference]: With dead ends: 980 [2020-10-13 08:05:40,616 INFO L226 Difference]: Without dead ends: 432 [2020-10-13 08:05:40,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-10-13 08:05:40,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-10-13 08:05:40,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 428. [2020-10-13 08:05:40,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-10-13 08:05:40,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 608 transitions. [2020-10-13 08:05:40,638 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 608 transitions. Word has length 143 [2020-10-13 08:05:40,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:05:40,639 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 608 transitions. [2020-10-13 08:05:40,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:05:40,639 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 608 transitions. [2020-10-13 08:05:40,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-13 08:05:40,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:05:40,642 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, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:05:40,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:05:40,643 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:05:40,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:05:40,643 INFO L82 PathProgramCache]: Analyzing trace with hash -208173314, now seen corresponding path program 1 times [2020-10-13 08:05:40,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:05:40,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407545702] [2020-10-13 08:05:40,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:05:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:40,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:40,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:41,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:41,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:41,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 08:05:41,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:05:41,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1272 [2020-10-13 08:05:41,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:41,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:05:41,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 08:05:41,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 08:05:41,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:05:42,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:05:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:42,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:42,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:42,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:05:42,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:05:42,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:05:42,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:42,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:05:42,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:05:42,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:05:42,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:05:42,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:05:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:42,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:42,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:42,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 08:05:42,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:05:42,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 08:05:42,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:42,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:05:42,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:05:42,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:05:42,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:05:42,221 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:05:42,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407545702] [2020-10-13 08:05:42,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:05:42,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:05:42,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262485000] [2020-10-13 08:05:42,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:05:42,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:05:42,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:05:42,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:05:42,231 INFO L87 Difference]: Start difference. First operand 428 states and 608 transitions. Second operand 5 states. [2020-10-13 08:05:43,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:05:43,894 INFO L93 Difference]: Finished difference Result 863 states and 1231 transitions. [2020-10-13 08:05:43,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:05:43,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-13 08:05:43,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:05:43,905 INFO L225 Difference]: With dead ends: 863 [2020-10-13 08:05:43,905 INFO L226 Difference]: Without dead ends: 432 [2020-10-13 08:05:43,908 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 08:05:43,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-10-13 08:05:43,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 428. [2020-10-13 08:05:43,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-10-13 08:05:43,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 606 transitions. [2020-10-13 08:05:43,929 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 606 transitions. Word has length 144 [2020-10-13 08:05:43,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:05:43,930 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 606 transitions. [2020-10-13 08:05:43,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:05:43,931 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 606 transitions. [2020-10-13 08:05:43,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-13 08:05:43,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:05:43,934 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, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:05:43,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:05:43,935 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:05:43,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:05:43,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1302239185, now seen corresponding path program 1 times [2020-10-13 08:05:43,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:05:43,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588129363] [2020-10-13 08:05:43,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:05:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:43,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:44,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:44,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:44,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 08:05:44,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:05:44,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 882 [2020-10-13 08:05:44,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:44,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:05:44,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:05:44,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:05:44,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:05:44,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:05:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:44,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:44,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:44,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:05:44,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:05:44,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:05:44,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:44,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:05:44,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:05:44,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:05:44,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:05:44,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:05:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:45,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:45,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:45,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:05:45,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:05:45,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 08:05:45,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:45,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:05:45,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:05:45,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:05:45,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:05:45,192 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:05:45,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588129363] [2020-10-13 08:05:45,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:05:45,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:05:45,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011921097] [2020-10-13 08:05:45,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:05:45,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:05:45,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:05:45,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:05:45,195 INFO L87 Difference]: Start difference. First operand 428 states and 606 transitions. Second operand 5 states. [2020-10-13 08:05:47,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:05:47,150 INFO L93 Difference]: Finished difference Result 1253 states and 1800 transitions. [2020-10-13 08:05:47,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:05:47,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-13 08:05:47,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:05:47,158 INFO L225 Difference]: With dead ends: 1253 [2020-10-13 08:05:47,158 INFO L226 Difference]: Without dead ends: 831 [2020-10-13 08:05:47,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:05:47,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-10-13 08:05:47,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 815. [2020-10-13 08:05:47,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2020-10-13 08:05:47,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1112 transitions. [2020-10-13 08:05:47,186 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1112 transitions. Word has length 145 [2020-10-13 08:05:47,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:05:47,187 INFO L479 AbstractCegarLoop]: Abstraction has 815 states and 1112 transitions. [2020-10-13 08:05:47,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:05:47,187 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1112 transitions. [2020-10-13 08:05:47,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-13 08:05:47,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:05:47,190 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, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:05:47,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:05:47,190 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:05:47,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:05:47,190 INFO L82 PathProgramCache]: Analyzing trace with hash 457139465, now seen corresponding path program 1 times [2020-10-13 08:05:47,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:05:47,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497144388] [2020-10-13 08:05:47,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:05:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:47,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:47,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:48,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:48,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-13 08:05:48,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:05:48,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-10-13 08:05:48,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:48,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:05:48,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 08:05:48,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:05:48,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:05:48,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:05:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:48,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:48,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:48,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:05:48,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:05:48,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:05:48,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:48,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:05:48,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:05:48,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:05:48,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:05:48,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:05:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:48,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:48,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:48,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:05:48,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:05:48,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 08:05:48,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:05:48,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:05:48,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 08:05:48,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:05:48,453 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:05:48,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497144388] [2020-10-13 08:05:48,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:05:48,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:05:48,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389126747] [2020-10-13 08:05:48,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:05:48,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:05:48,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:05:48,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:05:48,456 INFO L87 Difference]: Start difference. First operand 815 states and 1112 transitions. Second operand 5 states. [2020-10-13 08:05:50,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:05:50,772 INFO L93 Difference]: Finished difference Result 2020 states and 2813 transitions. [2020-10-13 08:05:50,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:05:50,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-13 08:05:50,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:05:50,781 INFO L225 Difference]: With dead ends: 2020 [2020-10-13 08:05:50,781 INFO L226 Difference]: Without dead ends: 1211 [2020-10-13 08:05:50,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:05:50,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2020-10-13 08:05:50,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1196. [2020-10-13 08:05:50,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1196 states. [2020-10-13 08:05:50,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1577 transitions. [2020-10-13 08:05:50,819 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1577 transitions. Word has length 149 [2020-10-13 08:05:50,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:05:50,820 INFO L479 AbstractCegarLoop]: Abstraction has 1196 states and 1577 transitions. [2020-10-13 08:05:50,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:05:50,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1577 transitions. [2020-10-13 08:05:50,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 08:05:50,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:05:50,823 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, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:05:50,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:05:50,824 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:05:50,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:05:50,824 INFO L82 PathProgramCache]: Analyzing trace with hash -2031106738, now seen corresponding path program 1 times [2020-10-13 08:05:50,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:05:50,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251050902] [2020-10-13 08:05:50,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:05:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:50,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:51,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:51,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:51,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 08:05:51,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:05:51,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-13 08:05:51,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:51,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:05:51,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 08:05:51,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:05:51,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:05:51,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:05:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:51,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:51,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:51,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:05:51,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:05:51,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:05:51,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:51,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:05:51,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:05:51,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:05:51,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:05:51,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:05:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:51,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:52,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:52,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 08:05:52,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:05:52,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 08:05:52,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:52,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:05:52,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:05:52,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 08:05:52,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:05:52,061 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:05:52,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251050902] [2020-10-13 08:05:52,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:05:52,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:05:52,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71147113] [2020-10-13 08:05:52,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:05:52,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:05:52,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:05:52,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:05:52,064 INFO L87 Difference]: Start difference. First operand 1196 states and 1577 transitions. Second operand 5 states. [2020-10-13 08:05:54,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:05:54,475 INFO L93 Difference]: Finished difference Result 2972 states and 4038 transitions. [2020-10-13 08:05:54,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:05:54,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-13 08:05:54,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:05:54,502 INFO L225 Difference]: With dead ends: 2972 [2020-10-13 08:05:54,502 INFO L226 Difference]: Without dead ends: 1782 [2020-10-13 08:05:54,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:05:54,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2020-10-13 08:05:54,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1770. [2020-10-13 08:05:54,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1770 states. [2020-10-13 08:05:54,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2244 transitions. [2020-10-13 08:05:54,569 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2244 transitions. Word has length 168 [2020-10-13 08:05:54,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:05:54,571 INFO L479 AbstractCegarLoop]: Abstraction has 1770 states and 2244 transitions. [2020-10-13 08:05:54,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:05:54,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2244 transitions. [2020-10-13 08:05:54,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 08:05:54,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:05:54,575 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, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:05:54,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:05:54,576 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:05:54,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:05:54,576 INFO L82 PathProgramCache]: Analyzing trace with hash -185427960, now seen corresponding path program 1 times [2020-10-13 08:05:54,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:05:54,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809755281] [2020-10-13 08:05:54,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:05:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:54,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:54,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:55,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:55,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:56,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:56,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 08:05:56,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:05:56,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1705 [2020-10-13 08:05:56,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:56,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:05:56,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-13 08:05:56,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:05:56,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:05:56,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:05:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:56,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:56,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:56,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:05:56,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:05:56,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:05:56,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:56,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:05:56,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:05:56,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:05:56,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:05:56,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:05:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:56,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:56,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:05:56,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:05:56,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:05:56,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 08:05:56,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:05:56,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:05:56,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:05:56,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:05:56,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:05:56,567 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:05:56,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809755281] [2020-10-13 08:05:56,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:05:56,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:05:56,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947949860] [2020-10-13 08:05:56,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:05:56,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:05:56,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:05:56,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:05:56,570 INFO L87 Difference]: Start difference. First operand 1770 states and 2244 transitions. Second operand 5 states. [2020-10-13 08:05:59,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:05:59,533 INFO L93 Difference]: Finished difference Result 4126 states and 5337 transitions. [2020-10-13 08:05:59,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:05:59,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-13 08:05:59,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:05:59,552 INFO L225 Difference]: With dead ends: 4126 [2020-10-13 08:05:59,552 INFO L226 Difference]: Without dead ends: 2362 [2020-10-13 08:05:59,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:05:59,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2020-10-13 08:05:59,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2340. [2020-10-13 08:05:59,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2340 states. [2020-10-13 08:05:59,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2340 states to 2340 states and 2935 transitions. [2020-10-13 08:05:59,629 INFO L78 Accepts]: Start accepts. Automaton has 2340 states and 2935 transitions. Word has length 172 [2020-10-13 08:05:59,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:05:59,630 INFO L479 AbstractCegarLoop]: Abstraction has 2340 states and 2935 transitions. [2020-10-13 08:05:59,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:05:59,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2340 states and 2935 transitions. [2020-10-13 08:05:59,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-13 08:05:59,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:05:59,634 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, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:05:59,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:05:59,635 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:05:59,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:05:59,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1624421017, now seen corresponding path program 1 times [2020-10-13 08:05:59,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:05:59,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231089140] [2020-10-13 08:05:59,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:05:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:05:59,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:05:59,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:00,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:00,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-13 08:06:00,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:06:00,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 859 [2020-10-13 08:06:00,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:00,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:00,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 08:06:00,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:06:00,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:00,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:06:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:00,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:00,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:00,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:06:00,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:00,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:06:00,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:00,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:00,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:00,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:00,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:00,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:06:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:00,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:00,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:00,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 08:06:00,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:00,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 08:06:00,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:00,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:06:00,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:00,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:06:00,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:06:00,885 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:06:00,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231089140] [2020-10-13 08:06:00,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:06:00,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:06:00,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239479811] [2020-10-13 08:06:00,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:06:00,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:06:00,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:06:00,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:06:00,896 INFO L87 Difference]: Start difference. First operand 2340 states and 2935 transitions. Second operand 5 states. [2020-10-13 08:06:03,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:06:03,388 INFO L93 Difference]: Finished difference Result 5457 states and 7083 transitions. [2020-10-13 08:06:03,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:06:03,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-13 08:06:03,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:06:03,404 INFO L225 Difference]: With dead ends: 5457 [2020-10-13 08:06:03,404 INFO L226 Difference]: Without dead ends: 3123 [2020-10-13 08:06:03,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:06:03,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3123 states. [2020-10-13 08:06:03,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3123 to 3110. [2020-10-13 08:06:03,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3110 states. [2020-10-13 08:06:03,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 3926 transitions. [2020-10-13 08:06:03,491 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 3926 transitions. Word has length 173 [2020-10-13 08:06:03,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:06:03,492 INFO L479 AbstractCegarLoop]: Abstraction has 3110 states and 3926 transitions. [2020-10-13 08:06:03,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:06:03,492 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 3926 transitions. [2020-10-13 08:06:03,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-13 08:06:03,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:06:03,497 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, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:06:03,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:06:03,497 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:06:03,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:06:03,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1920294560, now seen corresponding path program 1 times [2020-10-13 08:06:03,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:06:03,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376748261] [2020-10-13 08:06:03,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:06:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:03,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:03,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:04,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:04,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 08:06:04,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:06:04,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 865 [2020-10-13 08:06:04,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:04,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:04,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-13 08:06:04,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:06:04,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:04,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:06:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:04,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:04,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:04,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:06:04,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:04,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:06:04,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:04,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:04,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:04,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:04,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:04,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:06:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:04,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:04,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:04,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 08:06:04,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:04,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 08:06:04,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:04,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:06:04,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:04,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-13 08:06:04,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:04,664 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:06:04,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376748261] [2020-10-13 08:06:04,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:06:04,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:06:04,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34116645] [2020-10-13 08:06:04,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:06:04,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:06:04,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:06:04,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:06:04,667 INFO L87 Difference]: Start difference. First operand 3110 states and 3926 transitions. Second operand 5 states. [2020-10-13 08:06:07,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:06:07,168 INFO L93 Difference]: Finished difference Result 8522 states and 10958 transitions. [2020-10-13 08:06:07,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:06:07,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-13 08:06:07,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:06:07,190 INFO L225 Difference]: With dead ends: 8522 [2020-10-13 08:06:07,190 INFO L226 Difference]: Without dead ends: 5418 [2020-10-13 08:06:07,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:06:07,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5418 states. [2020-10-13 08:06:07,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5418 to 5400. [2020-10-13 08:06:07,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5400 states. [2020-10-13 08:06:07,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5400 states to 5400 states and 6587 transitions. [2020-10-13 08:06:07,320 INFO L78 Accepts]: Start accepts. Automaton has 5400 states and 6587 transitions. Word has length 184 [2020-10-13 08:06:07,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:06:07,321 INFO L479 AbstractCegarLoop]: Abstraction has 5400 states and 6587 transitions. [2020-10-13 08:06:07,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:06:07,321 INFO L276 IsEmpty]: Start isEmpty. Operand 5400 states and 6587 transitions. [2020-10-13 08:06:07,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-13 08:06:07,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:06:07,327 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, 2, 2, 2, 2, 2, 2, 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 08:06:07,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:06:07,328 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:06:07,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:06:07,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1253628053, now seen corresponding path program 1 times [2020-10-13 08:06:07,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:06:07,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798425561] [2020-10-13 08:06:07,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:06:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:07,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:07,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:08,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:08,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 08:06:08,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:06:08,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 887 [2020-10-13 08:06:08,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:08,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:08,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-13 08:06:08,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:06:08,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:08,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:06:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:08,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:08,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:08,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:06:08,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:08,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:06:08,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:08,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:08,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:08,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:08,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:08,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:06:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:08,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:08,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:08,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 08:06:08,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:08,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 08:06:08,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:08,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:06:08,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:08,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 08:06:08,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:08,555 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:06:08,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798425561] [2020-10-13 08:06:08,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:06:08,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:06:08,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740331755] [2020-10-13 08:06:08,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:06:08,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:06:08,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:06:08,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:06:08,557 INFO L87 Difference]: Start difference. First operand 5400 states and 6587 transitions. Second operand 5 states. [2020-10-13 08:06:11,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:06:11,130 INFO L93 Difference]: Finished difference Result 12920 states and 16101 transitions. [2020-10-13 08:06:11,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:06:11,131 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-10-13 08:06:11,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:06:11,160 INFO L225 Difference]: With dead ends: 12920 [2020-10-13 08:06:11,160 INFO L226 Difference]: Without dead ends: 7526 [2020-10-13 08:06:11,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:06:11,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7526 states. [2020-10-13 08:06:11,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7526 to 7502. [2020-10-13 08:06:11,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7502 states. [2020-10-13 08:06:11,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7502 states to 7502 states and 9082 transitions. [2020-10-13 08:06:11,350 INFO L78 Accepts]: Start accepts. Automaton has 7502 states and 9082 transitions. Word has length 189 [2020-10-13 08:06:11,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:06:11,352 INFO L479 AbstractCegarLoop]: Abstraction has 7502 states and 9082 transitions. [2020-10-13 08:06:11,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:06:11,352 INFO L276 IsEmpty]: Start isEmpty. Operand 7502 states and 9082 transitions. [2020-10-13 08:06:11,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-13 08:06:11,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:06:11,367 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, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:06:11,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:06:11,368 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:06:11,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:06:11,368 INFO L82 PathProgramCache]: Analyzing trace with hash -89456784, now seen corresponding path program 1 times [2020-10-13 08:06:11,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:06:11,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011615207] [2020-10-13 08:06:11,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:06:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:11,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:11,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:12,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:12,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:12,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-13 08:06:12,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:06:12,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1221 [2020-10-13 08:06:12,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:12,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:12,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 08:06:12,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:06:12,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:12,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:06:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:12,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:12,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:12,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:06:12,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:12,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:06:12,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:12,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:12,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:12,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:12,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:06:12,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:06:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:12,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:12,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:12,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 08:06:12,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:12,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-13 08:06:12,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:12,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:06:12,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:12,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-13 08:06:12,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:13,063 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:06:13,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011615207] [2020-10-13 08:06:13,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:06:13,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:06:13,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577017947] [2020-10-13 08:06:13,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:06:13,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:06:13,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:06:13,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:06:13,065 INFO L87 Difference]: Start difference. First operand 7502 states and 9082 transitions. Second operand 5 states. [2020-10-13 08:06:15,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:06:15,744 INFO L93 Difference]: Finished difference Result 17487 states and 21602 transitions. [2020-10-13 08:06:15,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:06:15,750 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 233 [2020-10-13 08:06:15,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:06:15,793 INFO L225 Difference]: With dead ends: 17487 [2020-10-13 08:06:15,794 INFO L226 Difference]: Without dead ends: 9991 [2020-10-13 08:06:15,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:06:15,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9991 states. [2020-10-13 08:06:16,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9991 to 9787. [2020-10-13 08:06:16,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9787 states. [2020-10-13 08:06:16,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9787 states to 9787 states and 11788 transitions. [2020-10-13 08:06:16,021 INFO L78 Accepts]: Start accepts. Automaton has 9787 states and 11788 transitions. Word has length 233 [2020-10-13 08:06:16,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:06:16,022 INFO L479 AbstractCegarLoop]: Abstraction has 9787 states and 11788 transitions. [2020-10-13 08:06:16,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:06:16,023 INFO L276 IsEmpty]: Start isEmpty. Operand 9787 states and 11788 transitions. [2020-10-13 08:06:16,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-13 08:06:16,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:06:16,034 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, 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, 1, 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 08:06:16,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 08:06:16,034 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:06:16,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:06:16,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1365422496, now seen corresponding path program 1 times [2020-10-13 08:06:16,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:06:16,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707998655] [2020-10-13 08:06:16,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:06:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:16,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:16,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:18,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:18,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-13 08:06:18,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:06:18,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2342 [2020-10-13 08:06:18,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:18,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:18,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-13 08:06:18,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:06:18,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:06:18,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:06:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:18,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:18,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:18,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:06:18,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:18,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:06:18,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:18,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:18,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:18,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:18,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:18,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:06:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:18,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:18,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:18,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 08:06:18,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:18,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 08:06:18,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:18,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:06:18,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:18,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 08:06:18,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:06:18,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 08:06:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:18,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:18,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:18,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:06:18,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:18,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-13 08:06:18,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:18,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:18,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:06:18,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:06:18,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:06:19,087 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:06:19,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707998655] [2020-10-13 08:06:19,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:06:19,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:06:19,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110236391] [2020-10-13 08:06:19,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:06:19,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:06:19,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:06:19,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:06:19,091 INFO L87 Difference]: Start difference. First operand 9787 states and 11788 transitions. Second operand 7 states. [2020-10-13 08:06:22,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:06:22,762 INFO L93 Difference]: Finished difference Result 21248 states and 26698 transitions. [2020-10-13 08:06:22,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:06:22,763 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-10-13 08:06:22,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:06:22,808 INFO L225 Difference]: With dead ends: 21248 [2020-10-13 08:06:22,808 INFO L226 Difference]: Without dead ends: 11273 [2020-10-13 08:06:22,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:06:22,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11273 states. [2020-10-13 08:06:23,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11273 to 10459. [2020-10-13 08:06:23,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10459 states. [2020-10-13 08:06:23,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10459 states to 10459 states and 12591 transitions. [2020-10-13 08:06:23,099 INFO L78 Accepts]: Start accepts. Automaton has 10459 states and 12591 transitions. Word has length 273 [2020-10-13 08:06:23,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:06:23,099 INFO L479 AbstractCegarLoop]: Abstraction has 10459 states and 12591 transitions. [2020-10-13 08:06:23,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:06:23,100 INFO L276 IsEmpty]: Start isEmpty. Operand 10459 states and 12591 transitions. [2020-10-13 08:06:23,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-13 08:06:23,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:06:23,112 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, 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, 1, 1, 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 08:06:23,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 08:06:23,112 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:06:23,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:06:23,113 INFO L82 PathProgramCache]: Analyzing trace with hash -731442558, now seen corresponding path program 1 times [2020-10-13 08:06:23,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:06:23,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705137433] [2020-10-13 08:06:23,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:06:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:23,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:23,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:24,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:24,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-13 08:06:24,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:06:24,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1813 [2020-10-13 08:06:24,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:24,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:24,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-13 08:06:24,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:06:24,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:06:25,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:06:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:25,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:25,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:25,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:06:25,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:25,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:06:25,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:25,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:25,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:25,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:25,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:06:25,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:06:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:25,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:25,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:25,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:06:25,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:25,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-13 08:06:25,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:25,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:06:25,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:25,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 08:06:25,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:06:25,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 08:06:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:25,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:25,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:25,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:06:25,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:25,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-13 08:06:25,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:25,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:25,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:06:25,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:06:25,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:25,772 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:06:25,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705137433] [2020-10-13 08:06:25,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:06:25,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:06:25,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43002595] [2020-10-13 08:06:25,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:06:25,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:06:25,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:06:25,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:06:25,774 INFO L87 Difference]: Start difference. First operand 10459 states and 12591 transitions. Second operand 8 states. [2020-10-13 08:06:30,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:06:30,206 INFO L93 Difference]: Finished difference Result 23687 states and 29032 transitions. [2020-10-13 08:06:30,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 08:06:30,207 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 274 [2020-10-13 08:06:30,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:06:30,261 INFO L225 Difference]: With dead ends: 23687 [2020-10-13 08:06:30,261 INFO L226 Difference]: Without dead ends: 13238 [2020-10-13 08:06:30,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-13 08:06:30,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13238 states. [2020-10-13 08:06:30,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13238 to 12624. [2020-10-13 08:06:30,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12624 states. [2020-10-13 08:06:30,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12624 states to 12624 states and 15286 transitions. [2020-10-13 08:06:30,675 INFO L78 Accepts]: Start accepts. Automaton has 12624 states and 15286 transitions. Word has length 274 [2020-10-13 08:06:30,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:06:30,675 INFO L479 AbstractCegarLoop]: Abstraction has 12624 states and 15286 transitions. [2020-10-13 08:06:30,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:06:30,676 INFO L276 IsEmpty]: Start isEmpty. Operand 12624 states and 15286 transitions. [2020-10-13 08:06:30,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-13 08:06:30,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:06:30,686 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:30,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 08:06:30,687 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:06:30,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:06:30,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1766074161, now seen corresponding path program 1 times [2020-10-13 08:06:30,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:06:30,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832279273] [2020-10-13 08:06:30,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:06:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:30,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:31,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:31,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-13 08:06:31,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:31,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-10-13 08:06:31,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:31,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:31,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-13 08:06:31,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:06:31,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:31,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:06:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:31,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:31,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:31,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:06:31,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:31,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:06:31,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:31,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:31,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:31,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:31,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:31,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:06:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:31,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:31,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:31,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:06:31,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:31,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 08:06:31,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:31,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:06:31,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:31,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 08:06:31,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:31,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:06:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:31,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:31,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:31,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:06:31,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:31,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-13 08:06:31,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:31,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:31,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:06:31,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:06:31,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:31,898 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:06:31,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832279273] [2020-10-13 08:06:31,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:06:31,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:06:31,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312062978] [2020-10-13 08:06:31,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:06:31,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:06:31,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:06:31,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:06:31,901 INFO L87 Difference]: Start difference. First operand 12624 states and 15286 transitions. Second operand 7 states. [2020-10-13 08:06:35,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:06:35,764 INFO L93 Difference]: Finished difference Result 26093 states and 31695 transitions. [2020-10-13 08:06:35,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:06:35,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 280 [2020-10-13 08:06:35,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:06:35,803 INFO L225 Difference]: With dead ends: 26093 [2020-10-13 08:06:35,803 INFO L226 Difference]: Without dead ends: 13663 [2020-10-13 08:06:35,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:06:35,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13663 states. [2020-10-13 08:06:36,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13663 to 13448. [2020-10-13 08:06:36,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13448 states. [2020-10-13 08:06:36,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13448 states to 13448 states and 16239 transitions. [2020-10-13 08:06:36,103 INFO L78 Accepts]: Start accepts. Automaton has 13448 states and 16239 transitions. Word has length 280 [2020-10-13 08:06:36,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:06:36,104 INFO L479 AbstractCegarLoop]: Abstraction has 13448 states and 16239 transitions. [2020-10-13 08:06:36,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:06:36,104 INFO L276 IsEmpty]: Start isEmpty. Operand 13448 states and 16239 transitions. [2020-10-13 08:06:36,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-13 08:06:36,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:06:36,117 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:36,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 08:06:36,118 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:06:36,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:06:36,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1617119003, now seen corresponding path program 1 times [2020-10-13 08:06:36,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:06:36,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589791997] [2020-10-13 08:06:36,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:06:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:36,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:36,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:36,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 08:06:36,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:36,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-13 08:06:36,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:36,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:36,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-13 08:06:36,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:06:36,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:36,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:06:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:36,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:36,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:36,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:06:36,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:36,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:06:36,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:36,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:36,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:36,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:06:36,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:06:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:36,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:36,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:36,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:06:36,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:36,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 08:06:36,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:36,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:06:36,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:36,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 08:06:36,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:36,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:06:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:36,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:36,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:36,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:06:36,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:36,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 08:06:36,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:36,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:36,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:06:36,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:06:36,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:37,722 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:06:37,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589791997] [2020-10-13 08:06:37,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:06:37,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:06:37,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257845138] [2020-10-13 08:06:37,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:06:37,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:06:37,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:06:37,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:06:37,725 INFO L87 Difference]: Start difference. First operand 13448 states and 16239 transitions. Second operand 7 states. [2020-10-13 08:06:40,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:06:40,566 INFO L93 Difference]: Finished difference Result 28357 states and 35912 transitions. [2020-10-13 08:06:40,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:06:40,570 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2020-10-13 08:06:40,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:06:40,615 INFO L225 Difference]: With dead ends: 28357 [2020-10-13 08:06:40,616 INFO L226 Difference]: Without dead ends: 15103 [2020-10-13 08:06:40,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:06:40,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15103 states. [2020-10-13 08:06:40,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15103 to 14593. [2020-10-13 08:06:40,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14593 states. [2020-10-13 08:06:40,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14593 states to 14593 states and 17432 transitions. [2020-10-13 08:06:40,951 INFO L78 Accepts]: Start accepts. Automaton has 14593 states and 17432 transitions. Word has length 290 [2020-10-13 08:06:40,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:06:40,952 INFO L479 AbstractCegarLoop]: Abstraction has 14593 states and 17432 transitions. [2020-10-13 08:06:40,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:06:40,952 INFO L276 IsEmpty]: Start isEmpty. Operand 14593 states and 17432 transitions. [2020-10-13 08:06:40,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-13 08:06:40,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:06:40,965 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:40,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 08:06:40,965 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:06:40,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:06:40,966 INFO L82 PathProgramCache]: Analyzing trace with hash -807311937, now seen corresponding path program 1 times [2020-10-13 08:06:40,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:06:40,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902250853] [2020-10-13 08:06:40,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:06:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:41,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:41,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:41,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-13 08:06:41,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:41,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-10-13 08:06:41,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:41,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:41,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-13 08:06:41,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:06:41,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:41,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:06:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:41,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:41,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:41,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:06:41,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:41,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:06:41,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:41,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:41,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:41,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:41,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:41,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:06:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:41,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:41,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:41,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:06:41,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:41,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 08:06:41,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:41,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:06:41,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:41,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 08:06:41,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:41,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:06:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:41,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:41,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:41,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:06:41,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:41,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 08:06:41,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:41,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:41,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:06:41,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:06:41,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:41,959 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:06:41,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902250853] [2020-10-13 08:06:41,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:06:41,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:06:41,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929473900] [2020-10-13 08:06:41,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:06:41,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:06:41,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:06:41,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:06:41,961 INFO L87 Difference]: Start difference. First operand 14593 states and 17432 transitions. Second operand 7 states. [2020-10-13 08:06:44,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:06:44,760 INFO L93 Difference]: Finished difference Result 28845 states and 34739 transitions. [2020-10-13 08:06:44,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:06:44,761 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 295 [2020-10-13 08:06:44,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:06:44,801 INFO L225 Difference]: With dead ends: 28845 [2020-10-13 08:06:44,801 INFO L226 Difference]: Without dead ends: 15230 [2020-10-13 08:06:44,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:06:44,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15230 states. [2020-10-13 08:06:45,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15230 to 15184. [2020-10-13 08:06:45,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15184 states. [2020-10-13 08:06:45,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15184 states to 15184 states and 18122 transitions. [2020-10-13 08:06:45,210 INFO L78 Accepts]: Start accepts. Automaton has 15184 states and 18122 transitions. Word has length 295 [2020-10-13 08:06:45,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:06:45,211 INFO L479 AbstractCegarLoop]: Abstraction has 15184 states and 18122 transitions. [2020-10-13 08:06:45,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:06:45,211 INFO L276 IsEmpty]: Start isEmpty. Operand 15184 states and 18122 transitions. [2020-10-13 08:06:45,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-13 08:06:45,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:06:45,226 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:45,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 08:06:45,226 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:06:45,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:06:45,227 INFO L82 PathProgramCache]: Analyzing trace with hash -308755135, now seen corresponding path program 1 times [2020-10-13 08:06:45,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:06:45,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166107461] [2020-10-13 08:06:45,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:06:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:45,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:45,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:45,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:46,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:46,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-13 08:06:46,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:06:46,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1570 [2020-10-13 08:06:46,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:46,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:06:46,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-13 08:06:46,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:06:46,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:46,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:06:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:46,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:46,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:46,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:06:46,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:46,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:06:46,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:46,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:46,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:46,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:46,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:46,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:06:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:46,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:47,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:47,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:06:47,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:47,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 08:06:47,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:47,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:06:47,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-13 08:06:47,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:06:47,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:47,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:06:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:47,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:47,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:47,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:06:47,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:47,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 08:06:47,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:47,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:47,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 08:06:47,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:47,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:06:47,224 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-13 08:06:47,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166107461] [2020-10-13 08:06:47,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:06:47,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:06:47,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897634339] [2020-10-13 08:06:47,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:06:47,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:06:47,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:06:47,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:06:47,227 INFO L87 Difference]: Start difference. First operand 15184 states and 18122 transitions. Second operand 5 states. [2020-10-13 08:06:49,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:06:49,647 INFO L93 Difference]: Finished difference Result 30731 states and 37258 transitions. [2020-10-13 08:06:49,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:06:49,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 295 [2020-10-13 08:06:49,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:06:49,690 INFO L225 Difference]: With dead ends: 30731 [2020-10-13 08:06:49,690 INFO L226 Difference]: Without dead ends: 16537 [2020-10-13 08:06:49,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:06:49,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16537 states. [2020-10-13 08:06:49,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16537 to 15556. [2020-10-13 08:06:49,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15556 states. [2020-10-13 08:06:50,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15556 states to 15556 states and 18435 transitions. [2020-10-13 08:06:50,034 INFO L78 Accepts]: Start accepts. Automaton has 15556 states and 18435 transitions. Word has length 295 [2020-10-13 08:06:50,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:06:50,034 INFO L479 AbstractCegarLoop]: Abstraction has 15556 states and 18435 transitions. [2020-10-13 08:06:50,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:06:50,034 INFO L276 IsEmpty]: Start isEmpty. Operand 15556 states and 18435 transitions. [2020-10-13 08:06:50,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-13 08:06:50,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:06:50,048 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:50,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 08:06:50,048 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:06:50,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:06:50,049 INFO L82 PathProgramCache]: Analyzing trace with hash -778364341, now seen corresponding path program 1 times [2020-10-13 08:06:50,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:06:50,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757137013] [2020-10-13 08:06:50,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:06:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:50,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:50,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:51,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:52,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:52,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-13 08:06:52,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:06:52,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2118 [2020-10-13 08:06:52,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:52,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:06:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:06:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-13 08:06:52,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:52,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:06:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:52,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:52,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:52,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:06:52,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:52,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:06:52,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:52,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:06:52,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:52,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:06:52,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:52,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:06:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:52,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:52,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:52,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 08:06:52,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:52,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-13 08:06:52,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:52,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:52,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:06:52,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-13 08:06:52,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:52,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-13 08:06:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:52,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:52,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:52,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:06:52,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:52,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 08:06:52,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:52,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:52,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 08:06:52,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:52,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:52,697 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 126 proven. 89 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:06:52,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757137013] [2020-10-13 08:06:52,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:06:52,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:06:52,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773939798] [2020-10-13 08:06:52,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:06:52,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:06:52,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:06:52,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:06:52,700 INFO L87 Difference]: Start difference. First operand 15556 states and 18435 transitions. Second operand 7 states. [2020-10-13 08:06:55,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:06:55,680 INFO L93 Difference]: Finished difference Result 30192 states and 35922 transitions. [2020-10-13 08:06:55,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:06:55,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 323 [2020-10-13 08:06:55,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:06:55,703 INFO L225 Difference]: With dead ends: 30192 [2020-10-13 08:06:55,703 INFO L226 Difference]: Without dead ends: 14830 [2020-10-13 08:06:55,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:06:55,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14830 states. [2020-10-13 08:06:55,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14830 to 14384. [2020-10-13 08:06:55,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14384 states. [2020-10-13 08:06:55,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14384 states to 14384 states and 16821 transitions. [2020-10-13 08:06:55,940 INFO L78 Accepts]: Start accepts. Automaton has 14384 states and 16821 transitions. Word has length 323 [2020-10-13 08:06:55,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:06:55,940 INFO L479 AbstractCegarLoop]: Abstraction has 14384 states and 16821 transitions. [2020-10-13 08:06:55,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:06:55,941 INFO L276 IsEmpty]: Start isEmpty. Operand 14384 states and 16821 transitions. [2020-10-13 08:06:55,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-13 08:06:55,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:06:55,952 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:06:55,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 08:06:55,953 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:06:55,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:06:55,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1528102205, now seen corresponding path program 1 times [2020-10-13 08:06:55,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:06:55,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748179830] [2020-10-13 08:06:55,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:06:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:56,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:56,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:56,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:56,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:56,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-13 08:06:56,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:06:56,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 943 [2020-10-13 08:06:56,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:56,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:06:56,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 279 [2020-10-13 08:06:56,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:06:56,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:57,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:06:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:57,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:57,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:57,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:06:57,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:57,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:06:57,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:57,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:57,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:57,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:57,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:57,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:06:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:57,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:57,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:57,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:06:57,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:57,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 08:06:57,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:57,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:06:57,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:57,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:06:57,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:57,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:06:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:06:57,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:06:57,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:06:57,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 08:06:57,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:06:57,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 08:06:57,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:06:57,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:06:57,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:06:57,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-13 08:06:57,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:06:57,257 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-13 08:06:57,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748179830] [2020-10-13 08:06:57,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:06:57,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:06:57,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050792557] [2020-10-13 08:06:57,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:06:57,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:06:57,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:06:57,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:06:57,259 INFO L87 Difference]: Start difference. First operand 14384 states and 16821 transitions. Second operand 5 states. [2020-10-13 08:06:59,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:06:59,707 INFO L93 Difference]: Finished difference Result 29740 states and 34960 transitions. [2020-10-13 08:06:59,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:06:59,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 337 [2020-10-13 08:06:59,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:06:59,732 INFO L225 Difference]: With dead ends: 29740 [2020-10-13 08:06:59,732 INFO L226 Difference]: Without dead ends: 15172 [2020-10-13 08:06:59,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:06:59,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15172 states. [2020-10-13 08:07:00,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15172 to 14752. [2020-10-13 08:07:00,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14752 states. [2020-10-13 08:07:00,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14752 states to 14752 states and 17116 transitions. [2020-10-13 08:07:00,058 INFO L78 Accepts]: Start accepts. Automaton has 14752 states and 17116 transitions. Word has length 337 [2020-10-13 08:07:00,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:00,058 INFO L479 AbstractCegarLoop]: Abstraction has 14752 states and 17116 transitions. [2020-10-13 08:07:00,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:07:00,058 INFO L276 IsEmpty]: Start isEmpty. Operand 14752 states and 17116 transitions. [2020-10-13 08:07:00,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-10-13 08:07:00,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:00,070 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:07:00,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 08:07:00,070 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:00,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:00,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1875407323, now seen corresponding path program 1 times [2020-10-13 08:07:00,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:00,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016610727] [2020-10-13 08:07:00,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:00,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:00,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:00,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:00,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-13 08:07:00,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:00,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-13 08:07:00,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-10-13 08:07:00,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:07:00,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:00,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:00,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:00,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:00,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:00,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:00,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:07:00,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:00,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:00,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:00,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:00,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:00,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 08:07:00,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:00,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 08:07:00,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:00,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:00,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:00,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 08:07:00,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:00,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-13 08:07:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:00,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:00,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:00,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:07:00,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:00,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 08:07:00,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:00,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:00,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:07:00,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:07:00,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:00,971 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:07:00,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016610727] [2020-10-13 08:07:00,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:00,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:07:00,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79307375] [2020-10-13 08:07:00,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:07:00,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:00,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:07:00,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:07:00,973 INFO L87 Difference]: Start difference. First operand 14752 states and 17116 transitions. Second operand 7 states. [2020-10-13 08:07:03,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:03,902 INFO L93 Difference]: Finished difference Result 33354 states and 38738 transitions. [2020-10-13 08:07:03,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:07:03,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 349 [2020-10-13 08:07:03,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:03,931 INFO L225 Difference]: With dead ends: 33354 [2020-10-13 08:07:03,931 INFO L226 Difference]: Without dead ends: 18608 [2020-10-13 08:07:03,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:07:03,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18608 states. [2020-10-13 08:07:04,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18608 to 18174. [2020-10-13 08:07:04,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18174 states. [2020-10-13 08:07:04,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18174 states to 18174 states and 20922 transitions. [2020-10-13 08:07:04,320 INFO L78 Accepts]: Start accepts. Automaton has 18174 states and 20922 transitions. Word has length 349 [2020-10-13 08:07:04,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:04,320 INFO L479 AbstractCegarLoop]: Abstraction has 18174 states and 20922 transitions. [2020-10-13 08:07:04,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:07:04,321 INFO L276 IsEmpty]: Start isEmpty. Operand 18174 states and 20922 transitions. [2020-10-13 08:07:04,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-13 08:07:04,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:04,334 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:07:04,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 08:07:04,335 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:04,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:04,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1210407537, now seen corresponding path program 1 times [2020-10-13 08:07:04,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:04,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074293264] [2020-10-13 08:07:04,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:04,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:04,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:04,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-13 08:07:04,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:04,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-13 08:07:04,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:04,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:04,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 217 [2020-10-13 08:07:04,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:07:04,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:04,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:04,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:04,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:04,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:04,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:04,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:07:04,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:04,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:04,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:04,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:04,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:04,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:04,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:04,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:04,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:07:04,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:04,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 08:07:04,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:04,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:04,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:04,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:04,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:04,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:07:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:04,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:04,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:04,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 08:07:04,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:04,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 08:07:04,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:04,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:04,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:04,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 08:07:04,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:05,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-13 08:07:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:05,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:05,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:05,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:07:05,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:05,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 08:07:05,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:05,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:05,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:07:05,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:07:05,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:05,280 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 371 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-13 08:07:05,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074293264] [2020-10-13 08:07:05,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:05,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:07:05,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779457543] [2020-10-13 08:07:05,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:07:05,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:05,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:07:05,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:07:05,282 INFO L87 Difference]: Start difference. First operand 18174 states and 20922 transitions. Second operand 8 states. [2020-10-13 08:07:09,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:09,158 INFO L93 Difference]: Finished difference Result 37518 states and 43145 transitions. [2020-10-13 08:07:09,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 08:07:09,163 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 369 [2020-10-13 08:07:09,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:09,192 INFO L225 Difference]: With dead ends: 37518 [2020-10-13 08:07:09,192 INFO L226 Difference]: Without dead ends: 19350 [2020-10-13 08:07:09,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-13 08:07:09,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19350 states. [2020-10-13 08:07:09,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19350 to 18744. [2020-10-13 08:07:09,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18744 states. [2020-10-13 08:07:09,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18744 states to 18744 states and 21502 transitions. [2020-10-13 08:07:09,477 INFO L78 Accepts]: Start accepts. Automaton has 18744 states and 21502 transitions. Word has length 369 [2020-10-13 08:07:09,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:09,478 INFO L479 AbstractCegarLoop]: Abstraction has 18744 states and 21502 transitions. [2020-10-13 08:07:09,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:07:09,478 INFO L276 IsEmpty]: Start isEmpty. Operand 18744 states and 21502 transitions. [2020-10-13 08:07:09,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-13 08:07:09,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:09,495 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:07:09,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 08:07:09,495 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:09,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:09,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1942824214, now seen corresponding path program 1 times [2020-10-13 08:07:09,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:09,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128984316] [2020-10-13 08:07:09,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:09,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:09,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:11,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:11,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-13 08:07:11,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:07:11,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1676 [2020-10-13 08:07:11,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:11,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 08:07:11,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-13 08:07:11,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-13 08:07:11,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:11,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:11,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:11,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:11,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:11,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:11,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:07:11,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:11,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:11,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:11,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:11,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:11,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:11,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:11,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:11,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:07:11,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:11,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 08:07:11,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:11,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 08:07:11,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:11,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 08:07:11,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:11,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:07:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:11,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:11,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:11,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:07:11,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:11,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-13 08:07:11,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:11,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:07:11,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:07:11,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-13 08:07:11,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:12,032 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 191 proven. 63 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:07:12,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128984316] [2020-10-13 08:07:12,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:12,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 08:07:12,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324742091] [2020-10-13 08:07:12,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 08:07:12,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:12,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 08:07:12,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:07:12,035 INFO L87 Difference]: Start difference. First operand 18744 states and 21502 transitions. Second operand 9 states. [2020-10-13 08:07:18,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:18,228 INFO L93 Difference]: Finished difference Result 32950 states and 38338 transitions. [2020-10-13 08:07:18,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 08:07:18,229 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 376 [2020-10-13 08:07:18,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:18,291 INFO L225 Difference]: With dead ends: 32950 [2020-10-13 08:07:18,291 INFO L226 Difference]: Without dead ends: 32948 [2020-10-13 08:07:18,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-10-13 08:07:18,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32948 states. [2020-10-13 08:07:18,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32948 to 28948. [2020-10-13 08:07:18,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28948 states. [2020-10-13 08:07:18,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28948 states to 28948 states and 33553 transitions. [2020-10-13 08:07:18,951 INFO L78 Accepts]: Start accepts. Automaton has 28948 states and 33553 transitions. Word has length 376 [2020-10-13 08:07:18,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:18,951 INFO L479 AbstractCegarLoop]: Abstraction has 28948 states and 33553 transitions. [2020-10-13 08:07:18,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 08:07:18,952 INFO L276 IsEmpty]: Start isEmpty. Operand 28948 states and 33553 transitions. [2020-10-13 08:07:18,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-10-13 08:07:18,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:18,963 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:07:18,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 08:07:18,963 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:18,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:18,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1306790277, now seen corresponding path program 1 times [2020-10-13 08:07:18,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:18,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688419036] [2020-10-13 08:07:18,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:19,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:19,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:20,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:20,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:21,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:21,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 400 [2020-10-13 08:07:21,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:07:21,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2524 [2020-10-13 08:07:21,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:21,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:21,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 234 [2020-10-13 08:07:21,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 08:07:21,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:21,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:21,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:21,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:21,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:21,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:21,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:07:21,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:21,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:21,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:21,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:21,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:21,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:07:21,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:21,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 08:07:21,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:21,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:21,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:21,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:21,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:21,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:07:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:21,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:21,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:21,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 08:07:21,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:21,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 08:07:21,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:21,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:21,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:21,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 08:07:21,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:21,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-13 08:07:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:22,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:22,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:22,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:22,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:07:22,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:07:22,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-13 08:07:22,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:22,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:22,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:07:22,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:07:22,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 08:07:22,574 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-10-13 08:07:23,156 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 373 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-13 08:07:23,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688419036] [2020-10-13 08:07:23,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:23,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:07:23,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380007355] [2020-10-13 08:07:23,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:07:23,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:23,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:07:23,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:07:23,158 INFO L87 Difference]: Start difference. First operand 28948 states and 33553 transitions. Second operand 7 states. [2020-10-13 08:07:25,250 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-10-13 08:07:26,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:26,016 INFO L93 Difference]: Finished difference Result 57451 states and 66664 transitions. [2020-10-13 08:07:26,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:07:26,020 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 386 [2020-10-13 08:07:26,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:26,070 INFO L225 Difference]: With dead ends: 57451 [2020-10-13 08:07:26,071 INFO L226 Difference]: Without dead ends: 28659 [2020-10-13 08:07:26,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:07:26,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28659 states. [2020-10-13 08:07:26,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28659 to 28566. [2020-10-13 08:07:26,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28566 states. [2020-10-13 08:07:26,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28566 states to 28566 states and 33062 transitions. [2020-10-13 08:07:26,844 INFO L78 Accepts]: Start accepts. Automaton has 28566 states and 33062 transitions. Word has length 386 [2020-10-13 08:07:26,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:26,845 INFO L479 AbstractCegarLoop]: Abstraction has 28566 states and 33062 transitions. [2020-10-13 08:07:26,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:07:26,846 INFO L276 IsEmpty]: Start isEmpty. Operand 28566 states and 33062 transitions. [2020-10-13 08:07:26,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-10-13 08:07:26,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:26,873 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:07:26,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 08:07:26,874 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:26,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:26,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1210642165, now seen corresponding path program 1 times [2020-10-13 08:07:26,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:26,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587017961] [2020-10-13 08:07:26,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:27,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:27,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:28,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:28,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-13 08:07:28,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:07:28,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1444 [2020-10-13 08:07:28,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:28,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:28,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-13 08:07:28,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 08:07:28,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:28,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:28,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:28,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:28,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:28,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:28,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:07:28,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:28,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:28,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:28,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:28,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:28,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:28,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:28,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:28,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:07:28,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:28,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 08:07:28,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:28,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:28,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:28,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:28,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:28,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:07:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:28,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:28,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:28,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 08:07:28,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:28,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 08:07:28,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:28,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:28,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:28,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:07:28,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:28,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-13 08:07:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:28,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:29,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:29,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:29,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:07:29,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:07:29,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-13 08:07:29,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:29,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:29,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:07:29,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:07:29,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:29,546 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-13 08:07:29,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587017961] [2020-10-13 08:07:29,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:29,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:07:29,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933284887] [2020-10-13 08:07:29,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:07:29,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:29,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:07:29,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:07:29,548 INFO L87 Difference]: Start difference. First operand 28566 states and 33062 transitions. Second operand 7 states. [2020-10-13 08:07:33,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:33,044 INFO L93 Difference]: Finished difference Result 56863 states and 65852 transitions. [2020-10-13 08:07:33,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 08:07:33,047 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 391 [2020-10-13 08:07:33,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:33,111 INFO L225 Difference]: With dead ends: 56863 [2020-10-13 08:07:33,111 INFO L226 Difference]: Without dead ends: 28471 [2020-10-13 08:07:33,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:07:33,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28471 states. [2020-10-13 08:07:33,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28471 to 28376. [2020-10-13 08:07:33,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28376 states. [2020-10-13 08:07:33,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28376 states to 28376 states and 32761 transitions. [2020-10-13 08:07:33,635 INFO L78 Accepts]: Start accepts. Automaton has 28376 states and 32761 transitions. Word has length 391 [2020-10-13 08:07:33,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:33,636 INFO L479 AbstractCegarLoop]: Abstraction has 28376 states and 32761 transitions. [2020-10-13 08:07:33,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:07:33,642 INFO L276 IsEmpty]: Start isEmpty. Operand 28376 states and 32761 transitions. [2020-10-13 08:07:33,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-10-13 08:07:33,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:33,656 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:07:33,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 08:07:33,657 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:33,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:33,657 INFO L82 PathProgramCache]: Analyzing trace with hash 249926107, now seen corresponding path program 1 times [2020-10-13 08:07:33,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:33,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944642470] [2020-10-13 08:07:33,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:33,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:33,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:34,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:36,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:36,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:36,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 416 [2020-10-13 08:07:36,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:07:36,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2431 [2020-10-13 08:07:36,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:36,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:36,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-13 08:07:36,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:07:36,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:36,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:36,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:36,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:36,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:36,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:36,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:07:36,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:36,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:36,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:36,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:36,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:36,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:36,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:36,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:36,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:07:36,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:36,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 08:07:36,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:36,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:36,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:36,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:36,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:36,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:07:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:36,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:36,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:36,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 08:07:36,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:36,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-13 08:07:36,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:36,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:36,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:36,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 08:07:36,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:36,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-13 08:07:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:36,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:36,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:36,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:07:36,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:36,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-13 08:07:36,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:36,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:36,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:07:36,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:07:36,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:36,918 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-13 08:07:36,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944642470] [2020-10-13 08:07:36,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:36,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:07:36,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234618973] [2020-10-13 08:07:36,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:07:36,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:36,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:07:36,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:07:36,920 INFO L87 Difference]: Start difference. First operand 28376 states and 32761 transitions. Second operand 7 states. [2020-10-13 08:07:40,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:40,389 INFO L93 Difference]: Finished difference Result 57794 states and 67099 transitions. [2020-10-13 08:07:40,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:07:40,391 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 402 [2020-10-13 08:07:40,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:40,464 INFO L225 Difference]: With dead ends: 57794 [2020-10-13 08:07:40,464 INFO L226 Difference]: Without dead ends: 29224 [2020-10-13 08:07:40,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:07:40,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29224 states. [2020-10-13 08:07:40,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29224 to 29132. [2020-10-13 08:07:40,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29132 states. [2020-10-13 08:07:40,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29132 states to 29132 states and 33619 transitions. [2020-10-13 08:07:40,953 INFO L78 Accepts]: Start accepts. Automaton has 29132 states and 33619 transitions. Word has length 402 [2020-10-13 08:07:40,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:40,953 INFO L479 AbstractCegarLoop]: Abstraction has 29132 states and 33619 transitions. [2020-10-13 08:07:40,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:07:40,953 INFO L276 IsEmpty]: Start isEmpty. Operand 29132 states and 33619 transitions. [2020-10-13 08:07:40,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-10-13 08:07:40,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:40,962 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:07:40,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 08:07:40,963 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:40,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:40,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1159942575, now seen corresponding path program 1 times [2020-10-13 08:07:40,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:40,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336176140] [2020-10-13 08:07:40,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:41,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:41,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:42,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:43,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:43,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-10-13 08:07:43,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:07:43,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2071 [2020-10-13 08:07:43,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:07:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 254 [2020-10-13 08:07:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 08:07:43,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:43,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:43,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:43,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:43,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:43,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:43,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:07:43,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:43,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:43,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:43,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:43,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:43,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:43,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:43,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:43,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:07:43,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:43,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 08:07:43,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:43,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:43,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:43,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:43,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:43,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:07:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:43,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:43,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:43,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 08:07:43,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:43,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 08:07:43,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:43,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 08:07:43,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:43,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 08:07:43,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:43,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-13 08:07:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:43,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:43,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:43,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:07:43,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:43,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 08:07:43,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:43,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:43,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:07:43,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:07:43,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:43,803 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-13 08:07:43,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336176140] [2020-10-13 08:07:43,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:43,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:07:43,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725220870] [2020-10-13 08:07:43,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:07:43,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:43,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:07:43,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:07:43,804 INFO L87 Difference]: Start difference. First operand 29132 states and 33619 transitions. Second operand 8 states. [2020-10-13 08:07:48,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:48,757 INFO L93 Difference]: Finished difference Result 61757 states and 71619 transitions. [2020-10-13 08:07:48,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 08:07:48,758 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 408 [2020-10-13 08:07:48,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:48,816 INFO L225 Difference]: With dead ends: 61757 [2020-10-13 08:07:48,816 INFO L226 Difference]: Without dead ends: 32819 [2020-10-13 08:07:48,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-13 08:07:48,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32819 states. [2020-10-13 08:07:49,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32819 to 30660. [2020-10-13 08:07:49,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30660 states. [2020-10-13 08:07:49,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30660 states to 30660 states and 35513 transitions. [2020-10-13 08:07:49,394 INFO L78 Accepts]: Start accepts. Automaton has 30660 states and 35513 transitions. Word has length 408 [2020-10-13 08:07:49,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:49,394 INFO L479 AbstractCegarLoop]: Abstraction has 30660 states and 35513 transitions. [2020-10-13 08:07:49,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:07:49,394 INFO L276 IsEmpty]: Start isEmpty. Operand 30660 states and 35513 transitions. [2020-10-13 08:07:49,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-10-13 08:07:49,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:49,405 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 08:07:49,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 08:07:49,406 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:49,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:49,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1327988276, now seen corresponding path program 1 times [2020-10-13 08:07:49,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:49,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036591586] [2020-10-13 08:07:49,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:49,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:49,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:50,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:51,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:51,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 447 [2020-10-13 08:07:51,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:07:51,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2211 [2020-10-13 08:07:51,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-13 08:07:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:07:51,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:51,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:51,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:51,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:51,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:51,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:51,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:07:51,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:51,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:51,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:51,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:51,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:51,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:51,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:51,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:51,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:07:51,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:51,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 08:07:51,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:51,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:51,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:51,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:51,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:51,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:07:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:51,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:51,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:51,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 08:07:51,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:51,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 08:07:51,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:51,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:51,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:51,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-13 08:07:51,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:51,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-13 08:07:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:52,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:52,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:52,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:07:52,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:52,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-13 08:07:52,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:52,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:52,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:07:52,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:07:52,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-13 08:07:52,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036591586] [2020-10-13 08:07:52,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:52,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:07:52,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902814471] [2020-10-13 08:07:52,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:07:52,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:52,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:07:52,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:07:52,752 INFO L87 Difference]: Start difference. First operand 30660 states and 35513 transitions. Second operand 7 states. [2020-10-13 08:07:56,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:56,957 INFO L93 Difference]: Finished difference Result 61396 states and 71106 transitions. [2020-10-13 08:07:56,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:07:56,958 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 433 [2020-10-13 08:07:56,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:57,017 INFO L225 Difference]: With dead ends: 61396 [2020-10-13 08:07:57,017 INFO L226 Difference]: Without dead ends: 30930 [2020-10-13 08:07:57,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:07:57,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30930 states. [2020-10-13 08:07:57,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30930 to 29502. [2020-10-13 08:07:57,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29502 states. [2020-10-13 08:07:57,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29502 states to 29502 states and 34255 transitions. [2020-10-13 08:07:57,414 INFO L78 Accepts]: Start accepts. Automaton has 29502 states and 34255 transitions. Word has length 433 [2020-10-13 08:07:57,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:57,414 INFO L479 AbstractCegarLoop]: Abstraction has 29502 states and 34255 transitions. [2020-10-13 08:07:57,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:07:57,414 INFO L276 IsEmpty]: Start isEmpty. Operand 29502 states and 34255 transitions. [2020-10-13 08:07:57,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-10-13 08:07:57,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:57,432 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:07:57,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 08:07:57,432 INFO L427 AbstractCegarLoop]: === Iteration 29 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:57,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:57,432 INFO L82 PathProgramCache]: Analyzing trace with hash -767029068, now seen corresponding path program 1 times [2020-10-13 08:07:57,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:57,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767956662] [2020-10-13 08:07:57,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:57,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:57,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:58,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:59,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:00,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:01,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:01,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 474 [2020-10-13 08:08:01,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:08:01,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3729 [2020-10-13 08:08:01,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:01,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:01,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 402 [2020-10-13 08:08:01,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:08:01,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:01,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:01,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:01,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:01,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:01,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:01,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:08:01,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:01,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:01,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:01,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:01,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:01,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:01,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:01,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:01,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:08:01,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:01,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 08:08:01,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:01,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:01,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:01,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:01,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:01,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:08:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:01,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:01,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:01,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 08:08:01,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:01,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 08:08:01,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:01,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:01,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:01,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:01,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:01,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-13 08:08:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:01,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:01,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:01,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 08:08:01,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:01,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 08:08:01,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:01,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:01,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:01,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-13 08:08:01,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:01,678 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 192 proven. 3 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2020-10-13 08:08:01,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767956662] [2020-10-13 08:08:01,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:01,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:08:01,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505520790] [2020-10-13 08:08:01,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:08:01,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:01,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:08:01,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:08:01,680 INFO L87 Difference]: Start difference. First operand 29502 states and 34255 transitions. Second operand 5 states. [2020-10-13 08:08:04,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:04,692 INFO L93 Difference]: Finished difference Result 58677 states and 68147 transitions. [2020-10-13 08:08:04,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:08:04,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 460 [2020-10-13 08:08:04,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:04,742 INFO L225 Difference]: With dead ends: 58677 [2020-10-13 08:08:04,743 INFO L226 Difference]: Without dead ends: 29369 [2020-10-13 08:08:04,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 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 08:08:04,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29369 states. [2020-10-13 08:08:05,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29369 to 28911. [2020-10-13 08:08:05,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28911 states. [2020-10-13 08:08:05,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28911 states to 28911 states and 32966 transitions. [2020-10-13 08:08:05,100 INFO L78 Accepts]: Start accepts. Automaton has 28911 states and 32966 transitions. Word has length 460 [2020-10-13 08:08:05,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:05,100 INFO L479 AbstractCegarLoop]: Abstraction has 28911 states and 32966 transitions. [2020-10-13 08:08:05,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:08:05,100 INFO L276 IsEmpty]: Start isEmpty. Operand 28911 states and 32966 transitions. [2020-10-13 08:08:05,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-10-13 08:08:05,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:05,118 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:08:05,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 08:08:05,119 INFO L427 AbstractCegarLoop]: === Iteration 30 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:05,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:05,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1882575557, now seen corresponding path program 1 times [2020-10-13 08:08:05,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:05,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742966996] [2020-10-13 08:08:05,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:05,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:05,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:05,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:06,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:06,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:07,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:07,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:08,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:08,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:09,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:09,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 484 [2020-10-13 08:08:09,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 08:08:09,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4195 [2020-10-13 08:08:09,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:09,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:09,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-13 08:08:09,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:08:09,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:09,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:09,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:09,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:09,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:09,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:09,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:08:09,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:09,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:09,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:09,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:09,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:09,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:09,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:09,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:09,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:08:09,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:09,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:08:09,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:09,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:09,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:09,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:09,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:09,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:08:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:09,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:09,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:09,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:08:09,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:09,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 08:08:09,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-13 08:08:09,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:08:09,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:09,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-13 08:08:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:09,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:09,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:09,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:08:09,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:09,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 08:08:09,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:09,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:09,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 08:08:09,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:09,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:09,829 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2020-10-13 08:08:09,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742966996] [2020-10-13 08:08:09,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:09,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:08:09,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975238281] [2020-10-13 08:08:09,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:08:09,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:09,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:08:09,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:08:09,831 INFO L87 Difference]: Start difference. First operand 28911 states and 32966 transitions. Second operand 5 states. [2020-10-13 08:08:11,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:11,774 INFO L93 Difference]: Finished difference Result 57668 states and 65791 transitions. [2020-10-13 08:08:11,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:08:11,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 470 [2020-10-13 08:08:11,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:11,822 INFO L225 Difference]: With dead ends: 57668 [2020-10-13 08:08:11,822 INFO L226 Difference]: Without dead ends: 28951 [2020-10-13 08:08:11,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:08:11,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28951 states. [2020-10-13 08:08:12,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28951 to 28878. [2020-10-13 08:08:12,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28878 states. [2020-10-13 08:08:12,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28878 states to 28878 states and 32895 transitions. [2020-10-13 08:08:12,171 INFO L78 Accepts]: Start accepts. Automaton has 28878 states and 32895 transitions. Word has length 470 [2020-10-13 08:08:12,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:12,171 INFO L479 AbstractCegarLoop]: Abstraction has 28878 states and 32895 transitions. [2020-10-13 08:08:12,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:08:12,171 INFO L276 IsEmpty]: Start isEmpty. Operand 28878 states and 32895 transitions. [2020-10-13 08:08:12,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-10-13 08:08:12,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:12,190 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:08:12,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 08:08:12,190 INFO L427 AbstractCegarLoop]: === Iteration 31 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:12,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:12,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1384018755, now seen corresponding path program 1 times [2020-10-13 08:08:12,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:12,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640232117] [2020-10-13 08:08:12,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:12,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:12,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:12,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 484 [2020-10-13 08:08:12,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:12,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-10-13 08:08:12,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:12,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:12,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-13 08:08:12,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:08:12,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:12,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:12,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:12,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:12,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:12,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:12,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:08:12,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:12,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:12,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:12,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:12,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:12,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:12,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:12,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:12,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:08:12,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:12,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:08:12,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:12,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:12,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:12,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:12,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:12,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:08:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:13,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:13,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:13,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:08:13,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:13,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 08:08:13,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:13,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:13,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:13,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-13 08:08:13,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:13,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-13 08:08:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:13,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:13,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:13,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:08:13,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:13,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 08:08:13,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:13,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:13,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:13,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:08:13,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:13,567 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-13 08:08:13,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640232117] [2020-10-13 08:08:13,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:13,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:08:13,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421476943] [2020-10-13 08:08:13,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:08:13,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:13,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:08:13,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:08:13,568 INFO L87 Difference]: Start difference. First operand 28878 states and 32895 transitions. Second operand 7 states. [2020-10-13 08:08:17,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:17,182 INFO L93 Difference]: Finished difference Result 59552 states and 67826 transitions. [2020-10-13 08:08:17,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:08:17,184 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 470 [2020-10-13 08:08:17,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:17,233 INFO L225 Difference]: With dead ends: 59552 [2020-10-13 08:08:17,234 INFO L226 Difference]: Without dead ends: 30868 [2020-10-13 08:08:17,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:08:17,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30868 states. [2020-10-13 08:08:17,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30868 to 30598. [2020-10-13 08:08:17,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30598 states. [2020-10-13 08:08:17,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30598 states to 30598 states and 34791 transitions. [2020-10-13 08:08:17,617 INFO L78 Accepts]: Start accepts. Automaton has 30598 states and 34791 transitions. Word has length 470 [2020-10-13 08:08:17,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:17,617 INFO L479 AbstractCegarLoop]: Abstraction has 30598 states and 34791 transitions. [2020-10-13 08:08:17,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:08:17,617 INFO L276 IsEmpty]: Start isEmpty. Operand 30598 states and 34791 transitions. [2020-10-13 08:08:17,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2020-10-13 08:08:17,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:17,631 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 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 08:08:17,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 08:08:17,631 INFO L427 AbstractCegarLoop]: === Iteration 32 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:17,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:17,632 INFO L82 PathProgramCache]: Analyzing trace with hash 2134904913, now seen corresponding path program 1 times [2020-10-13 08:08:17,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:17,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490845475] [2020-10-13 08:08:17,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:17,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:17,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:18,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:20,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:20,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 491 [2020-10-13 08:08:20,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:08:20,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3297 [2020-10-13 08:08:20,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:20,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:08:20,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-13 08:08:20,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:08:20,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:21,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:21,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:21,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:21,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:21,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:21,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:08:21,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:21,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:21,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:21,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:21,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:21,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:08:21,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:21,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 08:08:21,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:21,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:21,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:21,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:21,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:21,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:08:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:21,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:21,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:21,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:08:21,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:21,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 08:08:21,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:21,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:21,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:21,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-13 08:08:21,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:21,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-13 08:08:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:21,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:21,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:21,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:21,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:08:21,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:08:21,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-13 08:08:21,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:21,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:21,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:21,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:08:21,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:22,004 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-13 08:08:22,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490845475] [2020-10-13 08:08:22,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:22,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:08:22,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751800178] [2020-10-13 08:08:22,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:08:22,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:22,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:08:22,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:08:22,006 INFO L87 Difference]: Start difference. First operand 30598 states and 34791 transitions. Second operand 7 states. [2020-10-13 08:08:25,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:25,418 INFO L93 Difference]: Finished difference Result 61078 states and 69463 transitions. [2020-10-13 08:08:25,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 08:08:25,420 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 477 [2020-10-13 08:08:25,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:25,468 INFO L225 Difference]: With dead ends: 61078 [2020-10-13 08:08:25,469 INFO L226 Difference]: Without dead ends: 30250 [2020-10-13 08:08:25,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:08:25,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30250 states. [2020-10-13 08:08:25,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30250 to 29612. [2020-10-13 08:08:25,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29612 states. [2020-10-13 08:08:25,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29612 states to 29612 states and 33236 transitions. [2020-10-13 08:08:25,836 INFO L78 Accepts]: Start accepts. Automaton has 29612 states and 33236 transitions. Word has length 477 [2020-10-13 08:08:25,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:25,836 INFO L479 AbstractCegarLoop]: Abstraction has 29612 states and 33236 transitions. [2020-10-13 08:08:25,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:08:25,836 INFO L276 IsEmpty]: Start isEmpty. Operand 29612 states and 33236 transitions. [2020-10-13 08:08:25,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2020-10-13 08:08:25,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:25,851 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 08:08:25,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 08:08:25,851 INFO L427 AbstractCegarLoop]: === Iteration 33 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:25,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:25,851 INFO L82 PathProgramCache]: Analyzing trace with hash -2093355307, now seen corresponding path program 1 times [2020-10-13 08:08:25,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:25,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040957388] [2020-10-13 08:08:25,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:25,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:26,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:28,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:28,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 508 [2020-10-13 08:08:28,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:08:28,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2282 [2020-10-13 08:08:28,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:28,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:08:28,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 342 [2020-10-13 08:08:28,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-13 08:08:28,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:28,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:28,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:28,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:28,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:28,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:28,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:08:28,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:28,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:28,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:28,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:28,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:28,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:28,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:28,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:28,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 08:08:28,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:28,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 08:08:28,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:28,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:28,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:28,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:28,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:28,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-13 08:08:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:28,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:28,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:28,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 08:08:28,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:28,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 08:08:28,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-13 08:08:28,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:28,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-13 08:08:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:28,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:28,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:28,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:08:28,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:28,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 08:08:28,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:28,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:08:28,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:28,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:08:28,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:28,982 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 373 proven. 5 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-10-13 08:08:28,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040957388] [2020-10-13 08:08:28,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:28,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 08:08:28,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492536698] [2020-10-13 08:08:28,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 08:08:28,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:28,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 08:08:28,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:08:28,985 INFO L87 Difference]: Start difference. First operand 29612 states and 33236 transitions. Second operand 9 states. [2020-10-13 08:08:34,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:34,752 INFO L93 Difference]: Finished difference Result 68099 states and 76845 transitions. [2020-10-13 08:08:34,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:08:34,754 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 494 [2020-10-13 08:08:34,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:34,817 INFO L225 Difference]: With dead ends: 68099 [2020-10-13 08:08:34,818 INFO L226 Difference]: Without dead ends: 38681 [2020-10-13 08:08:34,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-10-13 08:08:34,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38681 states. [2020-10-13 08:08:35,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38681 to 36334. [2020-10-13 08:08:35,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36334 states. [2020-10-13 08:08:35,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36334 states to 36334 states and 40784 transitions. [2020-10-13 08:08:35,442 INFO L78 Accepts]: Start accepts. Automaton has 36334 states and 40784 transitions. Word has length 494 [2020-10-13 08:08:35,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:35,443 INFO L479 AbstractCegarLoop]: Abstraction has 36334 states and 40784 transitions. [2020-10-13 08:08:35,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 08:08:35,443 INFO L276 IsEmpty]: Start isEmpty. Operand 36334 states and 40784 transitions. [2020-10-13 08:08:35,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2020-10-13 08:08:35,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:35,462 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 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 08:08:35,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 08:08:35,462 INFO L427 AbstractCegarLoop]: === Iteration 34 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:35,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:35,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1520731409, now seen corresponding path program 1 times [2020-10-13 08:08:35,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:35,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106243912] [2020-10-13 08:08:35,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:35,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:35,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:38,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:38,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-13 08:08:38,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:08:38,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2499 [2020-10-13 08:08:38,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:38,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:38,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-10-13 08:08:38,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 08:08:38,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:38,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:38,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:38,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:38,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:38,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:38,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:08:38,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:38,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:38,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:38,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:38,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:38,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:38,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:38,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:38,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 08:08:38,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:38,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 08:08:38,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:38,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:38,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:38,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 08:08:38,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:38,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-13 08:08:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:38,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:38,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:38,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:08:38,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:38,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 08:08:38,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:38,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:38,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:38,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 08:08:38,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:38,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-10-13 08:08:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:38,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:38,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:38,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:08:38,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:38,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 08:08:38,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:38,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:38,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 08:08:38,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:38,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:38,812 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 278 proven. 87 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2020-10-13 08:08:38,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106243912] [2020-10-13 08:08:38,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:38,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:08:38,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967984176] [2020-10-13 08:08:38,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:08:38,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:38,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:08:38,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:08:38,815 INFO L87 Difference]: Start difference. First operand 36334 states and 40784 transitions. Second operand 7 states. [2020-10-13 08:08:43,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:43,195 INFO L93 Difference]: Finished difference Result 74796 states and 84093 transitions. [2020-10-13 08:08:43,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:08:43,197 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 518 [2020-10-13 08:08:43,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:43,270 INFO L225 Difference]: With dead ends: 74796 [2020-10-13 08:08:43,270 INFO L226 Difference]: Without dead ends: 38656 [2020-10-13 08:08:43,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:08:43,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38656 states. [2020-10-13 08:08:43,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38656 to 36504. [2020-10-13 08:08:43,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36504 states. [2020-10-13 08:08:43,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36504 states to 36504 states and 40676 transitions. [2020-10-13 08:08:43,757 INFO L78 Accepts]: Start accepts. Automaton has 36504 states and 40676 transitions. Word has length 518 [2020-10-13 08:08:43,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:43,757 INFO L479 AbstractCegarLoop]: Abstraction has 36504 states and 40676 transitions. [2020-10-13 08:08:43,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:08:43,757 INFO L276 IsEmpty]: Start isEmpty. Operand 36504 states and 40676 transitions. [2020-10-13 08:08:43,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2020-10-13 08:08:43,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:43,779 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:08:43,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 08:08:43,780 INFO L427 AbstractCegarLoop]: === Iteration 35 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:43,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:43,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1466693631, now seen corresponding path program 1 times [2020-10-13 08:08:43,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:43,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159767019] [2020-10-13 08:08:43,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:43,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:44,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:44,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:44,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:44,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:44,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:45,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:46,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:46,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 639 [2020-10-13 08:08:46,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 08:08:46,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2244 [2020-10-13 08:08:46,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:46,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:46,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 300 [2020-10-13 08:08:46,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:08:46,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:46,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:46,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:46,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:46,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:46,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:46,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:08:46,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:46,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:46,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:46,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:46,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:46,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:46,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:46,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:46,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:08:46,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:46,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:08:46,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:46,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:46,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:08:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:46,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:46,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:46,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 08:08:46,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:46,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 08:08:46,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:46,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:46,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-13 08:08:46,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:08:46,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:46,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-13 08:08:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:46,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:46,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:46,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:08:46,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:46,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:08:46,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:46,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:46,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 08:08:46,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:46,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:46,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-10-13 08:08:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:46,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:46,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:46,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:08:46,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:46,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 08:08:46,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:46,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:46,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 08:08:46,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:46,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:46,683 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 263 proven. 4 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2020-10-13 08:08:46,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159767019] [2020-10-13 08:08:46,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:46,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:08:46,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367011360] [2020-10-13 08:08:46,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:08:46,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:46,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:08:46,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:08:46,685 INFO L87 Difference]: Start difference. First operand 36504 states and 40676 transitions. Second operand 5 states. [2020-10-13 08:08:48,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:48,572 INFO L93 Difference]: Finished difference Result 72496 states and 80795 transitions. [2020-10-13 08:08:48,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:08:48,573 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 623 [2020-10-13 08:08:48,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:48,633 INFO L225 Difference]: With dead ends: 72496 [2020-10-13 08:08:48,633 INFO L226 Difference]: Without dead ends: 36186 [2020-10-13 08:08:48,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:08:48,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36186 states. [2020-10-13 08:08:49,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36186 to 36118. [2020-10-13 08:08:49,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36118 states. [2020-10-13 08:08:49,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36118 states to 36118 states and 40235 transitions. [2020-10-13 08:08:49,081 INFO L78 Accepts]: Start accepts. Automaton has 36118 states and 40235 transitions. Word has length 623 [2020-10-13 08:08:49,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:49,081 INFO L479 AbstractCegarLoop]: Abstraction has 36118 states and 40235 transitions. [2020-10-13 08:08:49,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:08:49,081 INFO L276 IsEmpty]: Start isEmpty. Operand 36118 states and 40235 transitions. [2020-10-13 08:08:49,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2020-10-13 08:08:49,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:49,107 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:49,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 08:08:49,107 INFO L427 AbstractCegarLoop]: === Iteration 36 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:49,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:49,108 INFO L82 PathProgramCache]: Analyzing trace with hash -41884995, now seen corresponding path program 1 times [2020-10-13 08:08:49,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:49,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194535385] [2020-10-13 08:08:49,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:49,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:49,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:54,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:54,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 683 [2020-10-13 08:08:54,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:08:54,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 08:08:54,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:54,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:08:54,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 436 [2020-10-13 08:08:54,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-13 08:08:54,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:54,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:54,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:54,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:54,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:54,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:54,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:08:54,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:54,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:54,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:54,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:54,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:54,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:54,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:54,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:54,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 08:08:54,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:54,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 08:08:54,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:54,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:54,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:54,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:54,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:54,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-13 08:08:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:54,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:54,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:54,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 08:08:54,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:54,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 08:08:54,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:54,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:54,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:54,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:54,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:54,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-10-13 08:08:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:54,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:54,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:54,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:08:54,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:54,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 08:08:54,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:54,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:54,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:54,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 08:08:54,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:54,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-10-13 08:08:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:54,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:54,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:54,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:08:54,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:54,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-13 08:08:54,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:54,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:08:54,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:54,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-13 08:08:54,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:55,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 612 proven. 65 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2020-10-13 08:08:55,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194535385] [2020-10-13 08:08:55,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:55,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:08:55,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231845665] [2020-10-13 08:08:55,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:08:55,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:55,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:08:55,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:08:55,079 INFO L87 Difference]: Start difference. First operand 36118 states and 40235 transitions. Second operand 8 states. [2020-10-13 08:09:00,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:09:00,471 INFO L93 Difference]: Finished difference Result 56472 states and 62997 transitions. [2020-10-13 08:09:00,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 08:09:00,473 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 667 [2020-10-13 08:09:00,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:09:00,586 INFO L225 Difference]: With dead ends: 56472 [2020-10-13 08:09:00,586 INFO L226 Difference]: Without dead ends: 56470 [2020-10-13 08:09:00,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-13 08:09:00,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56470 states.