/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=BIGGEST --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/Problem17_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:51:25,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:51:25,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:51:25,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:51:25,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:51:25,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:51:25,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:51:25,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:51:25,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:51:25,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:51:25,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:51:25,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:51:25,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:51:25,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:51:25,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:51:25,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:51:25,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:51:25,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:51:25,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:51:25,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:51:25,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:51:25,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:51:25,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:51:25,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:51:25,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:51:25,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:51:25,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:51:25,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:51:25,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:51:25,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:51:25,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:51:25,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:51:25,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:51:25,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:51:25,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:51:25,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:51:25,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:51:25,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:51:25,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:51:25,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:51:25,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:51:25,913 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 [2020-10-12 14:51:25,934 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:51:25,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:51:25,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:51:25,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:51:25,936 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:51:25,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:51:25,937 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:51:25,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:51:25,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:51:25,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:51:25,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:51:25,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:51:25,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:51:25,938 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:51:25,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:51:25,938 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:51:25,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:51:25,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:51:25,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:51:25,939 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:51:25,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:51:25,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:51:25,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:51:25,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:51:25,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:51:25,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:51:25,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:51:25,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:51:25,941 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:51:25,941 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 14:51:26,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:51:26,283 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:51:26,289 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:51:26,292 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:51:26,294 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:51:26,295 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label54.c [2020-10-12 14:51:26,378 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6511fd848/2c35b71f95cd4c5abf419f32072f574e/FLAGe53e47153 [2020-10-12 14:51:27,131 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:51:27,132 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label54.c [2020-10-12 14:51:27,153 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6511fd848/2c35b71f95cd4c5abf419f32072f574e/FLAGe53e47153 [2020-10-12 14:51:27,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6511fd848/2c35b71f95cd4c5abf419f32072f574e [2020-10-12 14:51:27,212 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:51:27,214 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:51:27,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:51:27,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:51:27,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:51:27,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:51:27" (1/1) ... [2020-10-12 14:51:27,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6340f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:51:27, skipping insertion in model container [2020-10-12 14:51:27,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:51:27" (1/1) ... [2020-10-12 14:51:27,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:51:27,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:51:28,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:51:28,491 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:51:28,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:51:29,015 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:51:29,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:51:29 WrapperNode [2020-10-12 14:51:29,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:51:29,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:51:29,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:51:29,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:51:29,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:51:29" (1/1) ... [2020-10-12 14:51:29,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:51:29" (1/1) ... [2020-10-12 14:51:29,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:51:29" (1/1) ... [2020-10-12 14:51:29,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:51:29" (1/1) ... [2020-10-12 14:51:29,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:51:29" (1/1) ... [2020-10-12 14:51:29,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:51:29" (1/1) ... [2020-10-12 14:51:29,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:51:29" (1/1) ... [2020-10-12 14:51:29,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:51:29,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:51:29,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:51:29,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:51:29,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:51:29" (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 [2020-10-12 14:51:29,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:51:29,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:51:29,386 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:51:29,386 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:51:29,386 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:51:29,387 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:51:29,388 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:51:29,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:51:29,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:51:29,389 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:51:29,389 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:51:29,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:51:29,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:51:38,685 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:51:38,686 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:51:38,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:51:38 BoogieIcfgContainer [2020-10-12 14:51:38,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:51:38,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:51:38,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:51:38,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:51:38,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:51:27" (1/3) ... [2020-10-12 14:51:38,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414106a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:51:38, skipping insertion in model container [2020-10-12 14:51:38,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:51:29" (2/3) ... [2020-10-12 14:51:38,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414106a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:51:38, skipping insertion in model container [2020-10-12 14:51:38,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:51:38" (3/3) ... [2020-10-12 14:51:38,716 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label54.c [2020-10-12 14:51:38,728 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:51:38,742 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:51:38,756 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:51:38,785 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:51:38,786 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:51:38,786 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:51:38,786 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:51:38,786 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:51:38,786 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:51:38,787 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:51:38,787 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:51:38,820 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-12 14:51:38,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 14:51:38,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:51:38,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:51:38,830 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:51:38,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:51:38,837 INFO L82 PathProgramCache]: Analyzing trace with hash 51921113, now seen corresponding path program 1 times [2020-10-12 14:51:38,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:51:38,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037504880] [2020-10-12 14:51:38,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:51:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:39,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:39,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:39,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 14:51:39,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:39,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-10-12 14:51:39,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:39,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:51:39,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:51:39,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 14:51:39,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 14:51:39,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:51:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:39,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:39,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:39,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:51:39,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:39,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 14:51:39,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:39,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:51:39,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:51:39,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:51:39,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:39,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:51:39,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037504880] [2020-10-12 14:51:39,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:51:39,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 14:51:39,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894671634] [2020-10-12 14:51:39,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 14:51:39,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:51:39,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 14:51:39,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 14:51:39,690 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-12 14:51:50,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:51:50,966 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-12 14:51:50,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:51:50,973 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-12 14:51:50,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:51:51,012 INFO L225 Difference]: With dead ends: 1692 [2020-10-12 14:51:51,012 INFO L226 Difference]: Without dead ends: 1012 [2020-10-12 14:51:51,023 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 [2020-10-12 14:51:51,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-12 14:51:51,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-12 14:51:51,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-12 14:51:51,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-12 14:51:51,184 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 19 [2020-10-12 14:51:51,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:51:51,184 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-12 14:51:51,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 14:51:51,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-12 14:51:51,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-12 14:51:51,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:51:51,191 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 14:51:51,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:51:51,192 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:51:51,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:51:51,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1846572815, now seen corresponding path program 1 times [2020-10-12 14:51:51,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:51:51,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502036372] [2020-10-12 14:51:51,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:51:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:51,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:51,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:52,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:52,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-12 14:51:52,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:51:52,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 938 [2020-10-12 14:51:52,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:52,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:51:52,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:51:52,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 14:51:52,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 14:51:52,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:51:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:52,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:52,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:52,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:51:52,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:52,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 14:51:52,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:52,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:51:52,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:51:52,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:51:52,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 14:51:52,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:51:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:52,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:52,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:52,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:51:52,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:52,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-12 14:51:52,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:52,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:51:52,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:51:52,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 14:51:52,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:52,655 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:51:52,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502036372] [2020-10-12 14:51:52,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:51:52,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 14:51:52,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091386798] [2020-10-12 14:51:52,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:51:52,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:51:52,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:51:52,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:51:52,659 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 7 states. [2020-10-12 14:52:07,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:52:07,176 INFO L93 Difference]: Finished difference Result 2928 states and 4532 transitions. [2020-10-12 14:52:07,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:52:07,177 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-10-12 14:52:07,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:52:07,190 INFO L225 Difference]: With dead ends: 2928 [2020-10-12 14:52:07,190 INFO L226 Difference]: Without dead ends: 1932 [2020-10-12 14:52:07,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:52:07,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states. [2020-10-12 14:52:07,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1901. [2020-10-12 14:52:07,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1901 states. [2020-10-12 14:52:07,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1901 states to 1901 states and 2465 transitions. [2020-10-12 14:52:07,281 INFO L78 Accepts]: Start accepts. Automaton has 1901 states and 2465 transitions. Word has length 90 [2020-10-12 14:52:07,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:52:07,282 INFO L479 AbstractCegarLoop]: Abstraction has 1901 states and 2465 transitions. [2020-10-12 14:52:07,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:52:07,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1901 states and 2465 transitions. [2020-10-12 14:52:07,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-12 14:52:07,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:52:07,287 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 14:52:07,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:52:07,287 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:52:07,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:52:07,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1300994527, now seen corresponding path program 1 times [2020-10-12 14:52:07,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:52:07,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899531477] [2020-10-12 14:52:07,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:52:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:07,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:07,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:07,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 14:52:07,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:07,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-12 14:52:07,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:07,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:52:07,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-12 14:52:07,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 14:52:07,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:07,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:52:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:07,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:07,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:07,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:52:07,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:07,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:52:07,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:07,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:52:07,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:07,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:52:07,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:07,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:52:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:07,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:07,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:07,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 14:52:07,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:07,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-12 14:52:07,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:07,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:52:07,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:07,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 14:52:07,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:07,976 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:52:07,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899531477] [2020-10-12 14:52:07,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:52:07,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:52:07,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211275550] [2020-10-12 14:52:07,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:52:07,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:52:07,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:52:07,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:52:07,980 INFO L87 Difference]: Start difference. First operand 1901 states and 2465 transitions. Second operand 5 states. [2020-10-12 14:52:21,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:52:21,999 INFO L93 Difference]: Finished difference Result 4706 states and 6251 transitions. [2020-10-12 14:52:22,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:52:22,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-12 14:52:22,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:52:22,014 INFO L225 Difference]: With dead ends: 4706 [2020-10-12 14:52:22,015 INFO L226 Difference]: Without dead ends: 2365 [2020-10-12 14:52:22,020 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 [2020-10-12 14:52:22,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2020-10-12 14:52:22,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2354. [2020-10-12 14:52:22,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2354 states. [2020-10-12 14:52:22,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2354 states to 2354 states and 2891 transitions. [2020-10-12 14:52:22,085 INFO L78 Accepts]: Start accepts. Automaton has 2354 states and 2891 transitions. Word has length 93 [2020-10-12 14:52:22,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:52:22,085 INFO L479 AbstractCegarLoop]: Abstraction has 2354 states and 2891 transitions. [2020-10-12 14:52:22,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:52:22,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2354 states and 2891 transitions. [2020-10-12 14:52:22,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-12 14:52:22,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:52:22,089 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:52:22,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:52:22,090 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:52:22,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:52:22,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1890361789, now seen corresponding path program 1 times [2020-10-12 14:52:22,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:52:22,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321242308] [2020-10-12 14:52:22,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:52:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:22,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:22,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:23,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:23,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-12 14:52:23,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:52:23,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1218 [2020-10-12 14:52:23,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:23,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:52:23,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-12 14:52:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 14:52:23,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:52:23,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:52:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:23,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:23,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:23,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:52:23,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:23,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 14:52:23,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:23,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:52:23,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:23,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:52:23,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:23,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:52:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:23,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:23,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:23,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:52:23,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:23,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 14:52:23,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:23,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:52:23,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:23,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:52:23,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:23,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:52:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:23,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:23,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:23,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 14:52:23,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:23,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-12 14:52:23,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:23,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:52:23,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:23,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 14:52:23,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:23,962 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-12 14:52:23,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321242308] [2020-10-12 14:52:23,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:52:23,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:52:23,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93631426] [2020-10-12 14:52:23,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:52:23,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:52:23,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:52:23,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:52:23,970 INFO L87 Difference]: Start difference. First operand 2354 states and 2891 transitions. Second operand 6 states. [2020-10-12 14:52:37,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:52:37,094 INFO L93 Difference]: Finished difference Result 5144 states and 6506 transitions. [2020-10-12 14:52:37,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:52:37,096 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 179 [2020-10-12 14:52:37,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:52:37,117 INFO L225 Difference]: With dead ends: 5144 [2020-10-12 14:52:37,118 INFO L226 Difference]: Without dead ends: 2796 [2020-10-12 14:52:37,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:52:37,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2796 states. [2020-10-12 14:52:37,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2796 to 2787. [2020-10-12 14:52:37,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2787 states. [2020-10-12 14:52:37,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 3592 transitions. [2020-10-12 14:52:37,239 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 3592 transitions. Word has length 179 [2020-10-12 14:52:37,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:52:37,242 INFO L479 AbstractCegarLoop]: Abstraction has 2787 states and 3592 transitions. [2020-10-12 14:52:37,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:52:37,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 3592 transitions. [2020-10-12 14:52:37,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-12 14:52:37,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:52:37,250 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:52:37,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:52:37,251 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:52:37,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:52:37,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1903898881, now seen corresponding path program 1 times [2020-10-12 14:52:37,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:52:37,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520982230] [2020-10-12 14:52:37,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:52:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:37,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:37,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:40,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:41,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:41,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-12 14:52:41,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:52:41,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4639 [2020-10-12 14:52:41,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:41,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:52:41,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:52:41,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-12 14:52:41,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:42,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:52:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:42,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:42,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:42,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:52:42,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:42,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 14:52:42,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:42,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:52:42,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:42,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:52:42,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:42,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:52:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:42,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:42,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:42,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:52:42,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:42,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-12 14:52:42,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:42,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:52:42,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:52:42,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:52:42,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:42,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:52:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:42,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:42,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:42,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:42,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 14:52:42,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:52:42,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-10-12 14:52:42,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:42,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:52:42,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:52:42,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 14:52:42,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:42,971 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-12 14:52:42,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520982230] [2020-10-12 14:52:42,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:52:42,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:52:42,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145162014] [2020-10-12 14:52:42,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:52:42,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:52:42,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:52:42,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:52:42,976 INFO L87 Difference]: Start difference. First operand 2787 states and 3592 transitions. Second operand 8 states. [2020-10-12 14:53:09,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:53:09,872 INFO L93 Difference]: Finished difference Result 9685 states and 12548 transitions. [2020-10-12 14:53:09,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 14:53:09,877 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 181 [2020-10-12 14:53:09,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:53:09,927 INFO L225 Difference]: With dead ends: 9685 [2020-10-12 14:53:09,927 INFO L226 Difference]: Without dead ends: 6450 [2020-10-12 14:53:09,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:53:09,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6450 states. [2020-10-12 14:53:10,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6450 to 6416. [2020-10-12 14:53:10,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6416 states. [2020-10-12 14:53:10,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6416 states to 6416 states and 8012 transitions. [2020-10-12 14:53:10,192 INFO L78 Accepts]: Start accepts. Automaton has 6416 states and 8012 transitions. Word has length 181 [2020-10-12 14:53:10,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:53:10,192 INFO L479 AbstractCegarLoop]: Abstraction has 6416 states and 8012 transitions. [2020-10-12 14:53:10,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:53:10,193 INFO L276 IsEmpty]: Start isEmpty. Operand 6416 states and 8012 transitions. [2020-10-12 14:53:10,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-12 14:53:10,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:53:10,196 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:53:10,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:53:10,196 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:53:10,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:53:10,197 INFO L82 PathProgramCache]: Analyzing trace with hash -128934538, now seen corresponding path program 1 times [2020-10-12 14:53:10,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:53:10,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937612452] [2020-10-12 14:53:10,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:53:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:10,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:10,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:11,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:11,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-12 14:53:11,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:53:11,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1293 [2020-10-12 14:53:11,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:11,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:53:11,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 14:53:11,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:53:11,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:11,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:53:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:11,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:11,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:11,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:53:11,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:11,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:53:11,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:11,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:53:11,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:11,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:53:11,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:53:11,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:53:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:11,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:11,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:11,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:53:11,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:11,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-12 14:53:11,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:11,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:53:11,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:11,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:53:11,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:53:11,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:53:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:11,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:12,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:12,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:12,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:53:12,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:53:12,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-12 14:53:12,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:12,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:53:12,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:53:12,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 14:53:12,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:53:12,296 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 93 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 14:53:12,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937612452] [2020-10-12 14:53:12,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:53:12,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:53:12,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647427530] [2020-10-12 14:53:12,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:53:12,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:53:12,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:53:12,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:53:12,300 INFO L87 Difference]: Start difference. First operand 6416 states and 8012 transitions. Second operand 6 states. [2020-10-12 14:53:27,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:53:27,188 INFO L93 Difference]: Finished difference Result 16887 states and 21942 transitions. [2020-10-12 14:53:27,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:53:27,191 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 192 [2020-10-12 14:53:27,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:53:27,274 INFO L225 Difference]: With dead ends: 16887 [2020-10-12 14:53:27,275 INFO L226 Difference]: Without dead ends: 10477 [2020-10-12 14:53:27,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:53:27,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10477 states. [2020-10-12 14:53:27,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10477 to 10018. [2020-10-12 14:53:27,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10018 states. [2020-10-12 14:53:27,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10018 states to 10018 states and 12405 transitions. [2020-10-12 14:53:27,680 INFO L78 Accepts]: Start accepts. Automaton has 10018 states and 12405 transitions. Word has length 192 [2020-10-12 14:53:27,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:53:27,681 INFO L479 AbstractCegarLoop]: Abstraction has 10018 states and 12405 transitions. [2020-10-12 14:53:27,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:53:27,681 INFO L276 IsEmpty]: Start isEmpty. Operand 10018 states and 12405 transitions. [2020-10-12 14:53:27,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-12 14:53:27,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:53:27,687 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 14:53:27,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:53:27,688 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:53:27,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:53:27,689 INFO L82 PathProgramCache]: Analyzing trace with hash 715753426, now seen corresponding path program 1 times [2020-10-12 14:53:27,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:53:27,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330352191] [2020-10-12 14:53:27,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:53:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:28,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:28,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:28,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:28,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:32,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:32,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-12 14:53:32,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:53:32,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-12 14:53:32,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:32,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 14:53:32,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:53:32,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 271 [2020-10-12 14:53:32,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:53:33,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:53:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:33,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:33,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:33,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:53:33,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:33,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 14:53:33,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:33,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:53:33,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:33,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:53:33,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:33,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:53:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:33,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:33,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:33,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:53:33,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:33,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-12 14:53:33,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:33,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:53:33,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:53:33,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:53:33,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:53:33,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:53:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:33,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:33,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:33,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:53:33,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:33,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-12 14:53:33,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:33,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:53:33,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:53:33,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 14:53:33,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:33,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-12 14:53:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:33,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:33,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:33,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:53:33,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:33,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-12 14:53:33,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:33,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:53:33,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:53:33,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 14:53:33,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:53:34,105 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 9 proven. 31 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2020-10-12 14:53:34,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330352191] [2020-10-12 14:53:34,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:53:34,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:53:34,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280377391] [2020-10-12 14:53:34,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:53:34,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:53:34,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:53:34,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:53:34,110 INFO L87 Difference]: Start difference. First operand 10018 states and 12405 transitions. Second operand 8 states. [2020-10-12 14:53:58,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:53:58,878 INFO L93 Difference]: Finished difference Result 29529 states and 39145 transitions. [2020-10-12 14:53:58,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 14:53:58,880 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 263 [2020-10-12 14:53:58,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:53:58,999 INFO L225 Difference]: With dead ends: 29529 [2020-10-12 14:53:58,999 INFO L226 Difference]: Without dead ends: 18626 [2020-10-12 14:53:59,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 14:53:59,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18626 states. [2020-10-12 14:53:59,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18626 to 13195. [2020-10-12 14:53:59,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13195 states. [2020-10-12 14:53:59,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13195 states to 13195 states and 16902 transitions. [2020-10-12 14:53:59,514 INFO L78 Accepts]: Start accepts. Automaton has 13195 states and 16902 transitions. Word has length 263 [2020-10-12 14:53:59,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:53:59,515 INFO L479 AbstractCegarLoop]: Abstraction has 13195 states and 16902 transitions. [2020-10-12 14:53:59,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:53:59,515 INFO L276 IsEmpty]: Start isEmpty. Operand 13195 states and 16902 transitions. [2020-10-12 14:53:59,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-12 14:53:59,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:53:59,521 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:53:59,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:53:59,522 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:53:59,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:53:59,523 INFO L82 PathProgramCache]: Analyzing trace with hash -997974468, now seen corresponding path program 1 times [2020-10-12 14:53:59,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:53:59,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505449308] [2020-10-12 14:53:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:53:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:59,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:59,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:00,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:01,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:03,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:03,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-12 14:54:03,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:54:03,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4279 [2020-10-12 14:54:03,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:03,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:54:03,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-12 14:54:03,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 14:54:03,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:03,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:54:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:04,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:04,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:04,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:54:04,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:04,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:54:04,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:04,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:54:04,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:54:04,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:54:04,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:04,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:54:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:04,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:04,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:04,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:54:04,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:04,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 14:54:04,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:04,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:54:04,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:54:04,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:54:04,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:04,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:54:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:04,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:04,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:04,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:54:04,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:04,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-12 14:54:04,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:04,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:54:04,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:54:04,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 14:54:04,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:54:04,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 14:54:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:04,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:04,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:04,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:04,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:54:04,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:54:04,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-12 14:54:04,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:04,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:54:04,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:54:04,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 14:54:04,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:04,725 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 162 proven. 13 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-12 14:54:04,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505449308] [2020-10-12 14:54:04,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:54:04,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:54:04,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904306648] [2020-10-12 14:54:04,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:54:04,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:54:04,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:54:04,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:54:04,729 INFO L87 Difference]: Start difference. First operand 13195 states and 16902 transitions. Second operand 6 states. [2020-10-12 14:54:20,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:54:20,318 INFO L93 Difference]: Finished difference Result 31760 states and 40616 transitions. [2020-10-12 14:54:20,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:54:20,320 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 286 [2020-10-12 14:54:20,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:54:20,392 INFO L225 Difference]: With dead ends: 31760 [2020-10-12 14:54:20,392 INFO L226 Difference]: Without dead ends: 17651 [2020-10-12 14:54:20,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:54:20,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17651 states. [2020-10-12 14:54:20,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17651 to 15441. [2020-10-12 14:54:20,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15441 states. [2020-10-12 14:54:20,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15441 states to 15441 states and 19447 transitions. [2020-10-12 14:54:20,789 INFO L78 Accepts]: Start accepts. Automaton has 15441 states and 19447 transitions. Word has length 286 [2020-10-12 14:54:20,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:54:20,789 INFO L479 AbstractCegarLoop]: Abstraction has 15441 states and 19447 transitions. [2020-10-12 14:54:20,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:54:20,790 INFO L276 IsEmpty]: Start isEmpty. Operand 15441 states and 19447 transitions. [2020-10-12 14:54:20,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-12 14:54:20,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:54:20,799 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:54:20,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:54:20,800 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:54:20,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:54:20,800 INFO L82 PathProgramCache]: Analyzing trace with hash -943631436, now seen corresponding path program 1 times [2020-10-12 14:54:20,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:54:20,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497165597] [2020-10-12 14:54:20,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:54:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:20,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:21,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:22,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:25,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:25,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-12 14:54:25,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:54:25,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 14:54:25,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:25,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:54:25,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-12 14:54:25,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 14:54:25,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:26,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:54:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:26,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:26,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:26,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:54:26,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:26,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:54:26,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:26,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:54:26,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:54:26,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:54:26,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:26,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:54:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:26,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:26,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:26,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:54:26,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:26,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 14:54:26,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:26,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:54:26,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:54:26,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:54:26,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:26,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:54:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:26,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:26,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:26,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:54:26,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:26,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-12 14:54:26,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:26,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:54:26,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:54:26,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 14:54:26,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:26,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 14:54:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:26,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:26,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:26,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 14:54:26,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:26,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-12 14:54:26,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:26,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:54:26,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:54:26,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 14:54:26,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:54:26,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:54:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:26,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:26,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:26,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 14:54:26,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:26,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 14:54:26,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:26,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:54:26,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-12 14:54:26,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:54:26,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:26,711 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 211 proven. 74 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-12 14:54:26,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497165597] [2020-10-12 14:54:26,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:54:26,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:54:26,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703912178] [2020-10-12 14:54:26,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:54:26,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:54:26,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:54:26,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:54:26,719 INFO L87 Difference]: Start difference. First operand 15441 states and 19447 transitions. Second operand 7 states. [2020-10-12 14:54:44,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:54:44,593 INFO L93 Difference]: Finished difference Result 43471 states and 55743 transitions. [2020-10-12 14:54:44,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:54:44,596 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 368 [2020-10-12 14:54:44,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:54:44,723 INFO L225 Difference]: With dead ends: 43471 [2020-10-12 14:54:44,723 INFO L226 Difference]: Without dead ends: 28036 [2020-10-12 14:54:44,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:54:44,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28036 states. [2020-10-12 14:54:45,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28036 to 25799. [2020-10-12 14:54:45,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25799 states. [2020-10-12 14:54:45,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25799 states to 25799 states and 33352 transitions. [2020-10-12 14:54:45,390 INFO L78 Accepts]: Start accepts. Automaton has 25799 states and 33352 transitions. Word has length 368 [2020-10-12 14:54:45,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:54:45,391 INFO L479 AbstractCegarLoop]: Abstraction has 25799 states and 33352 transitions. [2020-10-12 14:54:45,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:54:45,391 INFO L276 IsEmpty]: Start isEmpty. Operand 25799 states and 33352 transitions. [2020-10-12 14:54:45,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-12 14:54:45,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:54:45,403 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-12 14:54:45,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:54:45,403 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:54:45,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:54:45,404 INFO L82 PathProgramCache]: Analyzing trace with hash -802585044, now seen corresponding path program 1 times [2020-10-12 14:54:45,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:54:45,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568285871] [2020-10-12 14:54:45,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:54:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:45,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:45,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:46,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:50,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:50,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-12 14:54:50,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:54:50,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 14:54:50,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:50,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:54:50,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 366 [2020-10-12 14:54:50,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 14:54:50,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:50,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:54:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:50,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:50,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:50,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:54:50,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:50,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:54:50,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:50,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:54:50,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:54:50,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:54:50,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:50,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:54:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:50,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:50,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:50,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:54:50,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:50,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 14:54:50,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:50,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:54:50,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:54:50,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:54:50,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:50,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:54:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:50,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:50,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:50,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:54:50,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:50,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 14:54:50,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:50,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:54:50,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:54:50,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:54:50,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:50,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-12 14:54:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:50,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:50,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:50,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 14:54:50,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:50,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 14:54:50,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:50,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:54:50,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:54:50,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:54:50,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:50,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-12 14:54:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:54:50,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:54:50,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:54:50,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 14:54:50,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:54:50,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 14:54:50,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:54:50,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:54:50,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:54:50,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 14:54:50,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:54:50,851 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 53 proven. 4 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2020-10-12 14:54:50,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568285871] [2020-10-12 14:54:50,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:54:50,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:54:50,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960071981] [2020-10-12 14:54:50,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:54:50,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:54:50,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:54:50,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:54:50,853 INFO L87 Difference]: Start difference. First operand 25799 states and 33352 transitions. Second operand 5 states. [2020-10-12 14:55:04,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:55:04,759 INFO L93 Difference]: Finished difference Result 70098 states and 91064 transitions. [2020-10-12 14:55:04,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:55:04,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 369 [2020-10-12 14:55:04,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:55:04,912 INFO L225 Difference]: With dead ends: 70098 [2020-10-12 14:55:04,912 INFO L226 Difference]: Without dead ends: 44305 [2020-10-12 14:55:04,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:55:05,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44305 states. [2020-10-12 14:55:05,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44305 to 43398. [2020-10-12 14:55:05,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43398 states. [2020-10-12 14:55:05,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43398 states to 43398 states and 56366 transitions. [2020-10-12 14:55:05,797 INFO L78 Accepts]: Start accepts. Automaton has 43398 states and 56366 transitions. Word has length 369 [2020-10-12 14:55:05,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:55:05,798 INFO L479 AbstractCegarLoop]: Abstraction has 43398 states and 56366 transitions. [2020-10-12 14:55:05,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:55:05,798 INFO L276 IsEmpty]: Start isEmpty. Operand 43398 states and 56366 transitions. [2020-10-12 14:55:05,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-10-12 14:55:05,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:55:05,821 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-12 14:55:05,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 14:55:05,822 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:55:05,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:55:05,822 INFO L82 PathProgramCache]: Analyzing trace with hash 167500285, now seen corresponding path program 1 times [2020-10-12 14:55:05,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:55:05,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756576456] [2020-10-12 14:55:05,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:55:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:07,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:07,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:07,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:12,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:12,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 459 [2020-10-12 14:55:12,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:55:12,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-12 14:55:12,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:12,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:55:12,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 440 [2020-10-12 14:55:12,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 14:55:12,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:55:12,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:55:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:12,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:12,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:12,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:55:12,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:55:12,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:55:12,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:12,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:55:12,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:55:12,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:55:12,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:55:12,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:55:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:12,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:12,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:12,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:55:12,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:55:12,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 14:55:12,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:12,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:55:12,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:55:12,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:55:12,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:55:12,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:55:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:12,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:12,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:12,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:55:12,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:55:12,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 14:55:12,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:12,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:55:12,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:55:12,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:55:12,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:55:12,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 14:55:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:12,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:12,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:12,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 14:55:12,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:55:12,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 14:55:12,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:12,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:55:12,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:55:12,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:55:12,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:55:12,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-10-12 14:55:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:55:12,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:55:12,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:55:12,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 14:55:12,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:55:12,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 14:55:12,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:55:12,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:55:12,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:55:12,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 14:55:12,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:55:12,578 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 53 proven. 4 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2020-10-12 14:55:12,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756576456] [2020-10-12 14:55:12,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:55:12,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:55:12,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053046401] [2020-10-12 14:55:12,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:55:12,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:55:12,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:55:12,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:55:12,581 INFO L87 Difference]: Start difference. First operand 43398 states and 56366 transitions. Second operand 5 states.