/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/Problem15_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:02:32,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:02:32,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:02:32,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:02:32,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:02:32,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:02:32,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:02:32,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:02:32,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:02:32,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:02:32,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:02:32,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:02:32,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:02:32,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:02:32,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:02:32,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:02:32,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:02:32,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:02:32,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:02:32,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:02:32,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:02:32,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:02:32,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:02:32,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:02:32,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:02:32,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:02:32,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:02:32,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:02:32,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:02:32,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:02:32,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:02:32,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:02:32,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:02:32,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:02:32,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:02:32,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:02:32,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:02:32,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:02:32,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:02:32,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:02:32,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:02:32,740 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 09:02:32,776 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:02:32,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:02:32,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:02:32,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:02:32,782 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:02:32,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:02:32,782 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:02:32,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:02:32,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:02:32,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:02:32,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:02:32,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:02:32,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:02:32,788 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:02:32,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:02:32,788 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:02:32,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:02:32,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:02:32,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:02:32,790 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:02:32,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:02:32,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:02:32,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:02:32,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:02:32,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:02:32,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:02:32,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:02:32,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:02:32,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:02:32,792 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 09:02:33,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:02:33,150 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:02:33,154 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:02:33,156 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:02:33,156 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:02:33,157 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label24.c [2020-10-13 09:02:33,239 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70888a045/032a0d58bf7d4638851bc542c0c29196/FLAG7d2e07754 [2020-10-13 09:02:33,923 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:02:33,924 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label24.c [2020-10-13 09:02:33,943 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70888a045/032a0d58bf7d4638851bc542c0c29196/FLAG7d2e07754 [2020-10-13 09:02:34,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70888a045/032a0d58bf7d4638851bc542c0c29196 [2020-10-13 09:02:34,102 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:02:34,104 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:02:34,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:02:34,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:02:34,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:02:34,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:02:34" (1/1) ... [2020-10-13 09:02:34,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b8db4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:34, skipping insertion in model container [2020-10-13 09:02:34,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:02:34" (1/1) ... [2020-10-13 09:02:34,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:02:34,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:02:35,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:02:35,308 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:02:35,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:02:35,809 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:02:35,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:35 WrapperNode [2020-10-13 09:02:35,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:02:35,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:02:35,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:02:35,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:02:35,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:35" (1/1) ... [2020-10-13 09:02:35,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:35" (1/1) ... [2020-10-13 09:02:35,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:35" (1/1) ... [2020-10-13 09:02:35,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:35" (1/1) ... [2020-10-13 09:02:35,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:35" (1/1) ... [2020-10-13 09:02:35,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:35" (1/1) ... [2020-10-13 09:02:35,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:35" (1/1) ... [2020-10-13 09:02:36,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:02:36,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:02:36,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:02:36,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:02:36,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:35" (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 09:02:36,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:02:36,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:02:36,116 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:02:36,116 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:02:36,117 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:02:36,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:02:36,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:02:36,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:02:36,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:02:36,118 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:02:36,118 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:02:36,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:02:36,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:02:42,642 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:02:42,642 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:02:42,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:02:42 BoogieIcfgContainer [2020-10-13 09:02:42,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:02:42,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:02:42,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:02:42,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:02:42,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:02:34" (1/3) ... [2020-10-13 09:02:42,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f70c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:02:42, skipping insertion in model container [2020-10-13 09:02:42,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:35" (2/3) ... [2020-10-13 09:02:42,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f70c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:02:42, skipping insertion in model container [2020-10-13 09:02:42,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:02:42" (3/3) ... [2020-10-13 09:02:42,660 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label24.c [2020-10-13 09:02:42,672 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:02:42,682 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:02:42,697 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:02:42,726 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:02:42,727 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:02:42,727 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:02:42,727 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:02:42,727 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:02:42,727 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:02:42,727 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:02:42,728 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:02:42,757 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-13 09:02:42,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 09:02:42,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:02:42,767 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] [2020-10-13 09:02:42,768 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:02:42,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:02:42,775 INFO L82 PathProgramCache]: Analyzing trace with hash -2140723432, now seen corresponding path program 1 times [2020-10-13 09:02:42,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:02:42,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486624074] [2020-10-13 09:02:42,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:02:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:43,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:43,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:43,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 09:02:43,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:43,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-10-13 09:02:43,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:43,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:02:43,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:02:43,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 09:02:43,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:02:43,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:02:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:43,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:43,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:43,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:02:43,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:43,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:02:43,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:43,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:43,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:02:43,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:02:43,638 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 09:02:43,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486624074] [2020-10-13 09:02:43,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:02:43,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:02:43,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611184248] [2020-10-13 09:02:43,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:02:43,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:02:43,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:02:43,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:02:43,677 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-13 09:02:49,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:02:49,842 INFO L93 Difference]: Finished difference Result 1203 states and 2166 transitions. [2020-10-13 09:02:49,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:02:49,845 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-13 09:02:49,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:02:49,880 INFO L225 Difference]: With dead ends: 1203 [2020-10-13 09:02:49,880 INFO L226 Difference]: Without dead ends: 702 [2020-10-13 09:02:49,893 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 09:02:49,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2020-10-13 09:02:50,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 696. [2020-10-13 09:02:50,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-10-13 09:02:50,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1015 transitions. [2020-10-13 09:02:50,009 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1015 transitions. Word has length 44 [2020-10-13 09:02:50,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:02:50,010 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 1015 transitions. [2020-10-13 09:02:50,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:02:50,010 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1015 transitions. [2020-10-13 09:02:50,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 09:02:50,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:02:50,016 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:02:50,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:02:50,017 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:02:50,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:02:50,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1252715425, now seen corresponding path program 1 times [2020-10-13 09:02:50,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:02:50,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781438404] [2020-10-13 09:02:50,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:02:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:50,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:50,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:51,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:51,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:51,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 09:02:51,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:02:51,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1337 [2020-10-13 09:02:51,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:51,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 09:02:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 09:02:51,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:02:51,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:02:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:51,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:51,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:51,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:02:51,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:51,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:02:51,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:51,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:51,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:51,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:51,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:51,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:02:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:51,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:51,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:51,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:02:51,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:51,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 09:02:51,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:51,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:51,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:51,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:02:51,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-13 09:02:51,859 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:02:51,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781438404] [2020-10-13 09:02:51,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:02:51,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:02:51,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876375753] [2020-10-13 09:02:51,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:02:51,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:02:51,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:02:51,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:02:51,865 INFO L87 Difference]: Start difference. First operand 696 states and 1015 transitions. Second operand 5 states. [2020-10-13 09:03:03,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:03,107 INFO L93 Difference]: Finished difference Result 1712 states and 2602 transitions. [2020-10-13 09:03:03,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:03:03,113 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 09:03:03,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:03,120 INFO L225 Difference]: With dead ends: 1712 [2020-10-13 09:03:03,121 INFO L226 Difference]: Without dead ends: 1022 [2020-10-13 09:03:03,124 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 09:03:03,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2020-10-13 09:03:03,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 1018. [2020-10-13 09:03:03,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1018 states. [2020-10-13 09:03:03,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1396 transitions. [2020-10-13 09:03:03,187 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1396 transitions. Word has length 123 [2020-10-13 09:03:03,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:03,190 INFO L479 AbstractCegarLoop]: Abstraction has 1018 states and 1396 transitions. [2020-10-13 09:03:03,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:03:03,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1396 transitions. [2020-10-13 09:03:03,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 09:03:03,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:03,201 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:03:03,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:03:03,202 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:03,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:03,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1633178860, now seen corresponding path program 1 times [2020-10-13 09:03:03,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:03,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485910892] [2020-10-13 09:03:03,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:03,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:03,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:04,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:04,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-13 09:03:04,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:03:04,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1458 [2020-10-13 09:03:04,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:04,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:04,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-13 09:03:04,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 09:03:04,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:04,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:04,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:04,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:04,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:04,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:04,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:03:04,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:04,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:04,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:04,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:04,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:04,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:05,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:05,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 09:03:05,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:05,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-13 09:03:05,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:05,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:05,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:05,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:03:05,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:03:05,219 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:03:05,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485910892] [2020-10-13 09:03:05,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:05,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:03:05,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138525822] [2020-10-13 09:03:05,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:03:05,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:05,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:03:05,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:03:05,224 INFO L87 Difference]: Start difference. First operand 1018 states and 1396 transitions. Second operand 5 states. [2020-10-13 09:03:12,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:12,359 INFO L93 Difference]: Finished difference Result 2347 states and 3360 transitions. [2020-10-13 09:03:12,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:03:12,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-13 09:03:12,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:12,375 INFO L225 Difference]: With dead ends: 2347 [2020-10-13 09:03:12,376 INFO L226 Difference]: Without dead ends: 1335 [2020-10-13 09:03:12,380 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 09:03:12,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2020-10-13 09:03:12,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1331. [2020-10-13 09:03:12,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2020-10-13 09:03:12,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1766 transitions. [2020-10-13 09:03:12,433 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1766 transitions. Word has length 160 [2020-10-13 09:03:12,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:12,434 INFO L479 AbstractCegarLoop]: Abstraction has 1331 states and 1766 transitions. [2020-10-13 09:03:12,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:03:12,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1766 transitions. [2020-10-13 09:03:12,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-13 09:03:12,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:12,438 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:03:12,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:03:12,439 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:12,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:12,440 INFO L82 PathProgramCache]: Analyzing trace with hash -937109708, now seen corresponding path program 1 times [2020-10-13 09:03:12,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:12,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243959049] [2020-10-13 09:03:12,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:12,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:12,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:12,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:13,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:14,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:14,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 09:03:14,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:03:14,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1525 [2020-10-13 09:03:14,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:14,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:14,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 09:03:14,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 09:03:14,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:03:14,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:14,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:14,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:14,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:14,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:14,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:03:14,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:14,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:14,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:14,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:14,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:03:14,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:14,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:14,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:14,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:03:14,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:14,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-13 09:03:14,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:14,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:14,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:14,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:03:14,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:14,395 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:03:14,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243959049] [2020-10-13 09:03:14,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:14,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:03:14,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734970226] [2020-10-13 09:03:14,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:03:14,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:14,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:03:14,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:03:14,400 INFO L87 Difference]: Start difference. First operand 1331 states and 1766 transitions. Second operand 5 states. [2020-10-13 09:03:24,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:24,293 INFO L93 Difference]: Finished difference Result 3923 states and 5284 transitions. [2020-10-13 09:03:24,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:03:24,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-13 09:03:24,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:24,311 INFO L225 Difference]: With dead ends: 3923 [2020-10-13 09:03:24,312 INFO L226 Difference]: Without dead ends: 2598 [2020-10-13 09:03:24,316 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 09:03:24,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2598 states. [2020-10-13 09:03:24,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2598 to 2586. [2020-10-13 09:03:24,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2586 states. [2020-10-13 09:03:24,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 3378 transitions. [2020-10-13 09:03:24,396 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 3378 transitions. Word has length 167 [2020-10-13 09:03:24,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:24,397 INFO L479 AbstractCegarLoop]: Abstraction has 2586 states and 3378 transitions. [2020-10-13 09:03:24,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:03:24,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 3378 transitions. [2020-10-13 09:03:24,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-13 09:03:24,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:24,400 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:03:24,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:03:24,401 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:24,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:24,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1834502986, now seen corresponding path program 1 times [2020-10-13 09:03:24,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:24,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947184037] [2020-10-13 09:03:24,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:24,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:24,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:24,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:25,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:25,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:25,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 09:03:25,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:03:25,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1448 [2020-10-13 09:03:25,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:25,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:25,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 09:03:25,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 09:03:25,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:25,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:25,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:25,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:25,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:25,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:25,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:03:25,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:25,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:25,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:25,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:25,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:26,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:26,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:26,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:26,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:03:26,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:26,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-13 09:03:26,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:26,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:26,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:03:26,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:26,268 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:03:26,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947184037] [2020-10-13 09:03:26,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:26,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:03:26,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682140125] [2020-10-13 09:03:26,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:03:26,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:26,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:03:26,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:03:26,273 INFO L87 Difference]: Start difference. First operand 2586 states and 3378 transitions. Second operand 5 states. [2020-10-13 09:03:35,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:35,345 INFO L93 Difference]: Finished difference Result 5799 states and 7884 transitions. [2020-10-13 09:03:35,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:03:35,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-13 09:03:35,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:35,367 INFO L225 Difference]: With dead ends: 5799 [2020-10-13 09:03:35,369 INFO L226 Difference]: Without dead ends: 3219 [2020-10-13 09:03:35,376 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 09:03:35,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2020-10-13 09:03:35,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3214. [2020-10-13 09:03:35,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3214 states. [2020-10-13 09:03:35,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 4314 transitions. [2020-10-13 09:03:35,477 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 4314 transitions. Word has length 167 [2020-10-13 09:03:35,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:35,478 INFO L479 AbstractCegarLoop]: Abstraction has 3214 states and 4314 transitions. [2020-10-13 09:03:35,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:03:35,478 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 4314 transitions. [2020-10-13 09:03:35,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-13 09:03:35,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:35,482 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:03:35,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:03:35,483 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:35,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:35,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1532421114, now seen corresponding path program 1 times [2020-10-13 09:03:35,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:35,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22454511] [2020-10-13 09:03:35,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:35,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:36,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:36,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-13 09:03:36,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:36,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-13 09:03:36,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:36,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:03:36,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:03:36,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-13 09:03:36,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:36,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:36,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:36,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:36,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:36,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:36,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:03:36,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:36,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:36,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:36,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:03:36,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:03:36,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:36,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:36,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:36,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:03:36,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:36,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-13 09:03:36,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:36,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:36,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:03:36,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-13 09:03:36,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:03:36,760 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:03:36,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22454511] [2020-10-13 09:03:36,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:03:36,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 09:03:36,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378286498] [2020-10-13 09:03:36,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:03:36,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:36,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:03:36,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:03:36,764 INFO L87 Difference]: Start difference. First operand 3214 states and 4314 transitions. Second operand 7 states. [2020-10-13 09:03:46,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:46,864 INFO L93 Difference]: Finished difference Result 6768 states and 9104 transitions. [2020-10-13 09:03:46,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:03:46,867 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2020-10-13 09:03:46,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:46,890 INFO L225 Difference]: With dead ends: 6768 [2020-10-13 09:03:46,890 INFO L226 Difference]: Without dead ends: 3560 [2020-10-13 09:03:46,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:03:46,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3560 states. [2020-10-13 09:03:46,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3560 to 3557. [2020-10-13 09:03:46,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3557 states. [2020-10-13 09:03:47,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 4759 transitions. [2020-10-13 09:03:47,005 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 4759 transitions. Word has length 194 [2020-10-13 09:03:47,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:47,006 INFO L479 AbstractCegarLoop]: Abstraction has 3557 states and 4759 transitions. [2020-10-13 09:03:47,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:03:47,006 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 4759 transitions. [2020-10-13 09:03:47,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-13 09:03:47,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:47,011 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:03:47,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:03:47,012 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:47,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:47,013 INFO L82 PathProgramCache]: Analyzing trace with hash 207581705, now seen corresponding path program 1 times [2020-10-13 09:03:47,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:47,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220567027] [2020-10-13 09:03:47,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:47,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:47,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:47,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:49,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:51,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:52,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:52,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-13 09:03:52,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:03:52,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 09:03:52,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:52,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:52,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-13 09:03:52,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 09:03:52,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:52,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:52,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:52,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:52,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:52,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:52,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:03:52,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:52,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:52,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:52,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:52,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:52,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:52,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:52,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:52,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:03:52,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:52,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 09:03:52,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:52,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:52,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:52,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:52,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:03:52,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 09:03:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:52,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:52,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:52,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:03:52,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:52,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-13 09:03:52,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:52,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:52,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:52,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 09:03:52,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:03:52,764 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-13 09:03:52,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220567027] [2020-10-13 09:03:52,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:52,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:03:52,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226665333] [2020-10-13 09:03:52,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:03:52,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:52,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:03:52,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:03:52,770 INFO L87 Difference]: Start difference. First operand 3557 states and 4759 transitions. Second operand 5 states. [2020-10-13 09:04:00,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:00,902 INFO L93 Difference]: Finished difference Result 9583 states and 13165 transitions. [2020-10-13 09:04:00,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:04:00,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2020-10-13 09:04:00,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:00,935 INFO L225 Difference]: With dead ends: 9583 [2020-10-13 09:04:00,935 INFO L226 Difference]: Without dead ends: 6339 [2020-10-13 09:04:00,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 09:04:00,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6339 states. [2020-10-13 09:04:01,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6339 to 5725. [2020-10-13 09:04:01,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5725 states. [2020-10-13 09:04:01,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5725 states to 5725 states and 7259 transitions. [2020-10-13 09:04:01,135 INFO L78 Accepts]: Start accepts. Automaton has 5725 states and 7259 transitions. Word has length 217 [2020-10-13 09:04:01,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:01,136 INFO L479 AbstractCegarLoop]: Abstraction has 5725 states and 7259 transitions. [2020-10-13 09:04:01,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:04:01,137 INFO L276 IsEmpty]: Start isEmpty. Operand 5725 states and 7259 transitions. [2020-10-13 09:04:01,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-13 09:04:01,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:01,146 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 09:04:01,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:04:01,147 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:01,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:01,148 INFO L82 PathProgramCache]: Analyzing trace with hash 2030416424, now seen corresponding path program 1 times [2020-10-13 09:04:01,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:01,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994640769] [2020-10-13 09:04:01,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:01,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:01,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:01,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:03,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:03,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-13 09:04:03,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:04:03,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2712 [2020-10-13 09:04:03,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:03,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:03,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:04:03,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:04:03,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:04,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:04,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:04,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:04,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:04,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:04,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:04:04,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:04,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:04,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:04,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:04,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:04,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:04:04,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:04,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 09:04:04,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:04,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:04,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:04,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:04:04,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:04,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:04:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:04,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:04,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:04,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:04,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:04:04,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:04:04,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-10-13 09:04:04,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:04,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:04,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:04:04,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-13 09:04:04,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:05,030 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:04:05,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994640769] [2020-10-13 09:04:05,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:05,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:04:05,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490729264] [2020-10-13 09:04:05,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:04:05,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:05,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:04:05,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:04:05,033 INFO L87 Difference]: Start difference. First operand 5725 states and 7259 transitions. Second operand 7 states. [2020-10-13 09:04:14,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:14,459 INFO L93 Difference]: Finished difference Result 11651 states and 15457 transitions. [2020-10-13 09:04:14,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:04:14,462 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 289 [2020-10-13 09:04:14,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:14,499 INFO L225 Difference]: With dead ends: 11651 [2020-10-13 09:04:14,499 INFO L226 Difference]: Without dead ends: 5890 [2020-10-13 09:04:14,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:04:14,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5890 states. [2020-10-13 09:04:14,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5890 to 5815. [2020-10-13 09:04:14,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5815 states. [2020-10-13 09:04:14,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5815 states to 5815 states and 7467 transitions. [2020-10-13 09:04:14,710 INFO L78 Accepts]: Start accepts. Automaton has 5815 states and 7467 transitions. Word has length 289 [2020-10-13 09:04:14,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:14,711 INFO L479 AbstractCegarLoop]: Abstraction has 5815 states and 7467 transitions. [2020-10-13 09:04:14,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:04:14,712 INFO L276 IsEmpty]: Start isEmpty. Operand 5815 states and 7467 transitions. [2020-10-13 09:04:14,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-13 09:04:14,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:14,727 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:04:14,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:04:14,728 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:14,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:14,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1782568625, now seen corresponding path program 1 times [2020-10-13 09:04:14,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:14,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440723439] [2020-10-13 09:04:14,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:14,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:15,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:16,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:19,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:19,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-13 09:04:19,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:04:19,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 09:04:19,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:19,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:19,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-10-13 09:04:19,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 09:04:19,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:20,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:20,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:20,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:20,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:20,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:20,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:04:20,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:20,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:20,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:20,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:20,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:20,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:20,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:20,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:20,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:04:20,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:20,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 09:04:20,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:20,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:20,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:20,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:20,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:20,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:04:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:20,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:20,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:20,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:04:20,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:20,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-13 09:04:20,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:20,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:20,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:20,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 09:04:20,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:20,627 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-13 09:04:20,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440723439] [2020-10-13 09:04:20,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:20,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:04:20,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092460763] [2020-10-13 09:04:20,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:04:20,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:20,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:04:20,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:04:20,634 INFO L87 Difference]: Start difference. First operand 5815 states and 7467 transitions. Second operand 5 states. [2020-10-13 09:04:32,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:32,463 INFO L93 Difference]: Finished difference Result 14753 states and 19663 transitions. [2020-10-13 09:04:32,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:04:32,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 343 [2020-10-13 09:04:32,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:32,521 INFO L225 Difference]: With dead ends: 14753 [2020-10-13 09:04:32,521 INFO L226 Difference]: Without dead ends: 8944 [2020-10-13 09:04:32,537 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 09:04:32,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8944 states. [2020-10-13 09:04:32,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8944 to 8934. [2020-10-13 09:04:32,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8934 states. [2020-10-13 09:04:32,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8934 states to 8934 states and 11771 transitions. [2020-10-13 09:04:32,818 INFO L78 Accepts]: Start accepts. Automaton has 8934 states and 11771 transitions. Word has length 343 [2020-10-13 09:04:32,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:32,819 INFO L479 AbstractCegarLoop]: Abstraction has 8934 states and 11771 transitions. [2020-10-13 09:04:32,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:04:32,819 INFO L276 IsEmpty]: Start isEmpty. Operand 8934 states and 11771 transitions. [2020-10-13 09:04:32,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-13 09:04:32,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:32,835 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 09:04:32,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:04:32,836 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:32,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:32,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1731427093, now seen corresponding path program 1 times [2020-10-13 09:04:32,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:32,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108787428] [2020-10-13 09:04:32,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:32,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:33,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:33,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:34,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:36,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:36,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-13 09:04:36,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:04:36,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3187 [2020-10-13 09:04:36,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:36,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:36,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-13 09:04:36,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:04:36,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:36,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:36,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:36,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:36,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:36,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:36,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:04:36,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:36,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:36,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:36,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:36,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:36,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:36,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:36,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:36,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:04:36,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:36,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-13 09:04:36,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:36,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:36,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:36,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-13 09:04:36,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:36,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 09:04:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:36,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:36,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:37,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:37,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:04:37,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:04:37,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-10-13 09:04:37,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:37,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:37,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:04:37,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-13 09:04:37,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:37,546 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:04:37,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108787428] [2020-10-13 09:04:37,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:37,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:04:37,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557629312] [2020-10-13 09:04:37,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:04:37,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:37,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:04:37,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:04:37,549 INFO L87 Difference]: Start difference. First operand 8934 states and 11771 transitions. Second operand 7 states. [2020-10-13 09:04:50,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:50,884 INFO L93 Difference]: Finished difference Result 18195 states and 27016 transitions. [2020-10-13 09:04:50,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:04:50,886 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 356 [2020-10-13 09:04:50,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:50,940 INFO L225 Difference]: With dead ends: 18195 [2020-10-13 09:04:50,940 INFO L226 Difference]: Without dead ends: 9208 [2020-10-13 09:04:50,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:04:50,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9208 states. [2020-10-13 09:04:51,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9208 to 8954. [2020-10-13 09:04:51,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8954 states. [2020-10-13 09:04:51,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8954 states to 8954 states and 11560 transitions. [2020-10-13 09:04:51,304 INFO L78 Accepts]: Start accepts. Automaton has 8954 states and 11560 transitions. Word has length 356 [2020-10-13 09:04:51,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:51,305 INFO L479 AbstractCegarLoop]: Abstraction has 8954 states and 11560 transitions. [2020-10-13 09:04:51,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:04:51,305 INFO L276 IsEmpty]: Start isEmpty. Operand 8954 states and 11560 transitions. [2020-10-13 09:04:51,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-10-13 09:04:51,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:51,323 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:51,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:04:51,323 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:51,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:51,324 INFO L82 PathProgramCache]: Analyzing trace with hash -465252107, now seen corresponding path program 1 times [2020-10-13 09:04:51,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:51,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889606567] [2020-10-13 09:04:51,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:51,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:51,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:52,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:53,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:53,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:56,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:56,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 443 [2020-10-13 09:04:56,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:04:56,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 09:04:56,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:56,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:56,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 399 [2020-10-13 09:04:56,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 09:04:56,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:56,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:56,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:56,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:56,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:56,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:56,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:04:56,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:56,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:56,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:56,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:56,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:56,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:56,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:56,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:56,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:04:56,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:56,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 09:04:56,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:56,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:56,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:56,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:56,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:04:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:56,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:56,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:56,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 09:04:56,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:56,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:04:56,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:56,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:56,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:56,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:56,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:56,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-13 09:04:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:56,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:56,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:56,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:04:56,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:56,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-13 09:04:56,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:56,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:56,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:56,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 09:04:56,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:57,136 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 114 proven. 3 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-13 09:04:57,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889606567] [2020-10-13 09:04:57,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:57,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:04:57,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158945318] [2020-10-13 09:04:57,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:04:57,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:57,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:04:57,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:04:57,139 INFO L87 Difference]: Start difference. First operand 8954 states and 11560 transitions. Second operand 5 states. [2020-10-13 09:05:04,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:04,930 INFO L93 Difference]: Finished difference Result 17931 states and 23261 transitions. [2020-10-13 09:05:04,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:05:04,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 429 [2020-10-13 09:05:04,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:04,974 INFO L225 Difference]: With dead ends: 17931 [2020-10-13 09:05:04,974 INFO L226 Difference]: Without dead ends: 8958 [2020-10-13 09:05:04,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 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 09:05:05,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8958 states. [2020-10-13 09:05:05,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8958 to 8952. [2020-10-13 09:05:05,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8952 states. [2020-10-13 09:05:05,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8952 states to 8952 states and 11531 transitions. [2020-10-13 09:05:05,182 INFO L78 Accepts]: Start accepts. Automaton has 8952 states and 11531 transitions. Word has length 429 [2020-10-13 09:05:05,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:05,184 INFO L479 AbstractCegarLoop]: Abstraction has 8952 states and 11531 transitions. [2020-10-13 09:05:05,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:05:05,184 INFO L276 IsEmpty]: Start isEmpty. Operand 8952 states and 11531 transitions. [2020-10-13 09:05:05,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-13 09:05:05,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:05,205 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:05:05,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:05:05,205 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:05,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:05,206 INFO L82 PathProgramCache]: Analyzing trace with hash -171272005, now seen corresponding path program 1 times [2020-10-13 09:05:05,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:05,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339655871] [2020-10-13 09:05:05,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:05,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:05,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:05,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:06,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:10,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:10,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 443 [2020-10-13 09:05:10,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:05:10,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4741 [2020-10-13 09:05:10,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:10,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:05:10,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-13 09:05:10,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 09:05:10,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:10,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:10,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:10,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:10,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:10,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:10,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:05:10,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:10,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:10,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:10,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:10,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:10,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-13 09:05:10,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:10,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 09:05:10,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:10,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-13 09:05:10,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:10,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-13 09:05:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:10,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:10,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:10,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:10,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:05:10,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:05:10,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-13 09:05:10,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:10,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:10,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:05:10,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-13 09:05:10,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:10,977 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:05:10,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339655871] [2020-10-13 09:05:10,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:10,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:05:10,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553630431] [2020-10-13 09:05:10,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:05:10,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:10,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:05:10,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:05:10,980 INFO L87 Difference]: Start difference. First operand 8952 states and 11531 transitions. Second operand 7 states. [2020-10-13 09:05:19,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:19,304 INFO L93 Difference]: Finished difference Result 18473 states and 26521 transitions. [2020-10-13 09:05:19,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:05:19,306 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 431 [2020-10-13 09:05:19,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:19,362 INFO L225 Difference]: With dead ends: 18473 [2020-10-13 09:05:19,362 INFO L226 Difference]: Without dead ends: 9208 [2020-10-13 09:05:19,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:05:19,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9208 states. [2020-10-13 09:05:19,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9208 to 8952. [2020-10-13 09:05:19,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8952 states. [2020-10-13 09:05:19,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8952 states to 8952 states and 11488 transitions. [2020-10-13 09:05:19,732 INFO L78 Accepts]: Start accepts. Automaton has 8952 states and 11488 transitions. Word has length 431 [2020-10-13 09:05:19,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:19,733 INFO L479 AbstractCegarLoop]: Abstraction has 8952 states and 11488 transitions. [2020-10-13 09:05:19,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:05:19,733 INFO L276 IsEmpty]: Start isEmpty. Operand 8952 states and 11488 transitions. [2020-10-13 09:05:19,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-10-13 09:05:19,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:19,766 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:19,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:05:19,767 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:19,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:19,767 INFO L82 PathProgramCache]: Analyzing trace with hash 980450126, now seen corresponding path program 1 times [2020-10-13 09:05:19,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:19,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078808271] [2020-10-13 09:05:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:19,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:20,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:20,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:20,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:23,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:24,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:24,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 477 [2020-10-13 09:05:24,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:05:24,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 09:05:24,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:05:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-13 09:05:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 09:05:24,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:24,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:24,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:24,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:24,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:24,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:24,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:05:24,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:24,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:24,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:24,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:24,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:24,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:24,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:25,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:25,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:05:25,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:25,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 09:05:25,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:25,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:25,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:25,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:25,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:25,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:05:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:25,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:25,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:25,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:05:25,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:25,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:05:25,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:25,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:25,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:25,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:05:25,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:25,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-13 09:05:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:25,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:25,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:25,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:25,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:05:25,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:05:25,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-10-13 09:05:25,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:25,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:05:25,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:05:25,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-13 09:05:25,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:26,044 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-13 09:05:26,300 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-13 09:05:26,492 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-13 09:05:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 329 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 09:05:27,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078808271] [2020-10-13 09:05:27,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:27,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 09:05:27,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095289222] [2020-10-13 09:05:27,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:05:27,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:27,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:05:27,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:05:27,140 INFO L87 Difference]: Start difference. First operand 8952 states and 11488 transitions. Second operand 10 states. [2020-10-13 09:05:27,342 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2020-10-13 09:05:27,697 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2020-10-13 09:05:27,913 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2020-10-13 09:05:28,104 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 42 [2020-10-13 09:05:29,813 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2020-10-13 09:05:30,269 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-10-13 09:05:30,501 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-13 09:05:30,802 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-10-13 09:05:31,066 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2020-10-13 09:05:31,479 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2020-10-13 09:05:31,638 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2020-10-13 09:05:36,950 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-10-13 09:05:37,160 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 34 [2020-10-13 09:05:39,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:39,925 INFO L93 Difference]: Finished difference Result 18152 states and 23467 transitions. [2020-10-13 09:05:39,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 09:05:39,928 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 463 [2020-10-13 09:05:39,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:39,956 INFO L225 Difference]: With dead ends: 18152 [2020-10-13 09:05:39,957 INFO L226 Difference]: Without dead ends: 9063 [2020-10-13 09:05:39,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=186, Invalid=570, Unknown=0, NotChecked=0, Total=756 [2020-10-13 09:05:39,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9063 states. [2020-10-13 09:05:40,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9063 to 8990. [2020-10-13 09:05:40,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8990 states. [2020-10-13 09:05:40,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 11380 transitions. [2020-10-13 09:05:40,150 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 11380 transitions. Word has length 463 [2020-10-13 09:05:40,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:40,150 INFO L479 AbstractCegarLoop]: Abstraction has 8990 states and 11380 transitions. [2020-10-13 09:05:40,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:05:40,151 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 11380 transitions. [2020-10-13 09:05:40,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-10-13 09:05:40,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:40,171 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:40,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:05:40,171 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:40,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:40,172 INFO L82 PathProgramCache]: Analyzing trace with hash 796361230, now seen corresponding path program 1 times [2020-10-13 09:05:40,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:40,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012079095] [2020-10-13 09:05:40,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:40,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:40,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:40,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:42,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:45,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:45,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 489 [2020-10-13 09:05:45,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:05:45,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 09:05:45,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:45,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:05:45,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 445 [2020-10-13 09:05:45,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 09:05:45,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:45,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:05:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:45,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:45,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:45,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:05:45,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:45,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:05:45,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:45,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:45,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:45,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:45,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:45,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:05:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:45,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:45,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:45,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:05:45,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:45,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:05:45,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:45,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:45,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:45,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:45,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:45,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:05:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:45,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:45,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:45,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:05:45,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:45,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:05:45,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:45,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:05:45,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:45,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:05:45,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:45,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-13 09:05:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:45,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:45,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:05:45,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 09:05:45,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:05:45,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 09:05:45,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:05:45,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:05:45,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:05:45,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-13 09:05:45,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:05:45,814 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 114 proven. 3 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2020-10-13 09:05:45,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012079095] [2020-10-13 09:05:45,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:05:45,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:05:45,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962744981] [2020-10-13 09:05:45,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:05:45,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:05:45,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:05:45,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:05:45,816 INFO L87 Difference]: Start difference. First operand 8990 states and 11380 transitions. Second operand 5 states. [2020-10-13 09:05:56,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:05:56,213 INFO L93 Difference]: Finished difference Result 23234 states and 30239 transitions. [2020-10-13 09:05:56,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:05:56,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 475 [2020-10-13 09:05:56,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:05:56,256 INFO L225 Difference]: With dead ends: 23234 [2020-10-13 09:05:56,257 INFO L226 Difference]: Without dead ends: 14250 [2020-10-13 09:05:56,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 09:05:56,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14250 states. [2020-10-13 09:05:56,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14250 to 12092. [2020-10-13 09:05:56,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12092 states. [2020-10-13 09:05:56,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12092 states to 12092 states and 14967 transitions. [2020-10-13 09:05:56,524 INFO L78 Accepts]: Start accepts. Automaton has 12092 states and 14967 transitions. Word has length 475 [2020-10-13 09:05:56,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:05:56,525 INFO L479 AbstractCegarLoop]: Abstraction has 12092 states and 14967 transitions. [2020-10-13 09:05:56,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:05:56,525 INFO L276 IsEmpty]: Start isEmpty. Operand 12092 states and 14967 transitions. [2020-10-13 09:05:56,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2020-10-13 09:05:56,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:05:56,546 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:56,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:05:56,546 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:05:56,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:05:56,547 INFO L82 PathProgramCache]: Analyzing trace with hash 963096376, now seen corresponding path program 1 times [2020-10-13 09:05:56,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:05:56,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514574813] [2020-10-13 09:05:56,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:05:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:05:56,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:56,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:58,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:05:58,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:01,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:01,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 492 [2020-10-13 09:06:01,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:06:01,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 09:06:01,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:01,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:01,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 448 [2020-10-13 09:06:01,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 09:06:01,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:01,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:01,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:01,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:01,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:01,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:01,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:06:01,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:01,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:01,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:01,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:01,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:01,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:01,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:01,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:01,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:06:01,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:01,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:06:01,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:01,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:01,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:01,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:01,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:01,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:06:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:01,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:01,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:01,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 09:06:01,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:01,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:06:01,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:01,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:01,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:01,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:01,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:01,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-13 09:06:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:02,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:02,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:02,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 09:06:02,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:02,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 09:06:02,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:02,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:02,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:02,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-13 09:06:02,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:02,263 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 114 proven. 3 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2020-10-13 09:06:02,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514574813] [2020-10-13 09:06:02,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:02,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:06:02,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763403208] [2020-10-13 09:06:02,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:06:02,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:02,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:06:02,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:06:02,266 INFO L87 Difference]: Start difference. First operand 12092 states and 14967 transitions. Second operand 5 states. [2020-10-13 09:06:09,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:06:09,716 INFO L93 Difference]: Finished difference Result 24196 states and 30096 transitions. [2020-10-13 09:06:09,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:06:09,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 478 [2020-10-13 09:06:09,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:06:09,756 INFO L225 Difference]: With dead ends: 24196 [2020-10-13 09:06:09,756 INFO L226 Difference]: Without dead ends: 12096 [2020-10-13 09:06:09,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 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 09:06:09,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12096 states. [2020-10-13 09:06:09,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12096 to 12092. [2020-10-13 09:06:09,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12092 states. [2020-10-13 09:06:10,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12092 states to 12092 states and 14959 transitions. [2020-10-13 09:06:10,011 INFO L78 Accepts]: Start accepts. Automaton has 12092 states and 14959 transitions. Word has length 478 [2020-10-13 09:06:10,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:06:10,012 INFO L479 AbstractCegarLoop]: Abstraction has 12092 states and 14959 transitions. [2020-10-13 09:06:10,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:06:10,012 INFO L276 IsEmpty]: Start isEmpty. Operand 12092 states and 14959 transitions. [2020-10-13 09:06:10,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-10-13 09:06:10,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:06:10,027 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:10,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:06:10,027 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:06:10,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:06:10,028 INFO L82 PathProgramCache]: Analyzing trace with hash 2016495239, now seen corresponding path program 1 times [2020-10-13 09:06:10,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:06:10,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386530778] [2020-10-13 09:06:10,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:06:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:10,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:10,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:11,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:14,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:14,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 493 [2020-10-13 09:06:14,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:06:14,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4528 [2020-10-13 09:06:14,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:14,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:14,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-13 09:06:14,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 09:06:14,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:14,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:06:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:14,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:14,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:14,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:06:14,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:14,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:06:14,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:14,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:14,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:14,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:14,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:14,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:06:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:14,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:14,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:14,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:06:14,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:14,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 09:06:14,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:14,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:06:14,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:06:14,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-13 09:06:14,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:14,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:06:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:14,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:15,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:15,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 09:06:15,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:15,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 09:06:15,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:15,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:06:15,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:06:15,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:06:15,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:15,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-13 09:06:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:06:15,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:06:15,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:06:15,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:06:15,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:06:15,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 09:06:15,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:06:15,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:06:15,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-13 09:06:15,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:06:15,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:06:15,382 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 197 proven. 84 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-13 09:06:15,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386530778] [2020-10-13 09:06:15,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:06:15,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:06:15,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913866250] [2020-10-13 09:06:15,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:06:15,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:06:15,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:06:15,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:06:15,385 INFO L87 Difference]: Start difference. First operand 12092 states and 14959 transitions. Second operand 7 states.