/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:16:30,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:16:30,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:16:31,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:16:31,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:16:31,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:16:31,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:16:31,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:16:31,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:16:31,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:16:31,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:16:31,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:16:31,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:16:31,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:16:31,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:16:31,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:16:31,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:16:31,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:16:31,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:16:31,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:16:31,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:16:31,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:16:31,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:16:31,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:16:31,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:16:31,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:16:31,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:16:31,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:16:31,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:16:31,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:16:31,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:16:31,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:16:31,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:16:31,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:16:31,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:16:31,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:16:31,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:16:31,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:16:31,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:16:31,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:16:31,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:16:31,062 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 20:16:31,117 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:16:31,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:16:31,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:16:31,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:16:31,120 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:16:31,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:16:31,121 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:16:31,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:16:31,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:16:31,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:16:31,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:16:31,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:16:31,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:16:31,122 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:16:31,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:16:31,123 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:16:31,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:16:31,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:16:31,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:16:31,124 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:16:31,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:16:31,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:16:31,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:16:31,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:16:31,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:16:31,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:16:31,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:16:31,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:16:31,126 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:16:31,126 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-09-24 20:16:31,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:16:31,608 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:16:31,612 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:16:31,614 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:16:31,614 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:16:31,615 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c [2020-09-24 20:16:31,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e2aeee48/15fffecacd14421894a96c91819a518c/FLAGd43742f61 [2020-09-24 20:16:32,247 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:16:32,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c [2020-09-24 20:16:32,263 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e2aeee48/15fffecacd14421894a96c91819a518c/FLAGd43742f61 [2020-09-24 20:16:32,529 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e2aeee48/15fffecacd14421894a96c91819a518c [2020-09-24 20:16:32,543 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:16:32,548 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:16:32,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:16:32,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:16:32,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:16:32,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:16:32" (1/1) ... [2020-09-24 20:16:32,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5db1276a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:16:32, skipping insertion in model container [2020-09-24 20:16:32,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:16:32" (1/1) ... [2020-09-24 20:16:32,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:16:32,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:16:33,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:16:33,040 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:16:33,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:16:33,291 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:16:33,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:16:33 WrapperNode [2020-09-24 20:16:33,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:16:33,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:16:33,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:16:33,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:16:33,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:16:33" (1/1) ... [2020-09-24 20:16:33,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:16:33" (1/1) ... [2020-09-24 20:16:33,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:16:33" (1/1) ... [2020-09-24 20:16:33,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:16:33" (1/1) ... [2020-09-24 20:16:33,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:16:33" (1/1) ... [2020-09-24 20:16:33,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:16:33" (1/1) ... [2020-09-24 20:16:33,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:16:33" (1/1) ... [2020-09-24 20:16:33,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:16:33,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:16:33,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:16:33,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:16:33,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:16:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:16:33,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:16:33,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:16:33,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 20:16:33,507 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 20:16:33,508 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 20:16:33,508 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 20:16:33,508 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 20:16:33,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 20:16:33,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 20:16:33,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 20:16:33,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 20:16:33,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 20:16:33,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 20:16:33,510 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 20:16:33,510 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 20:16:33,511 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 20:16:33,511 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 20:16:33,512 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 20:16:33,512 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 20:16:33,512 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 20:16:33,512 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 20:16:33,512 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 20:16:33,513 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 20:16:33,513 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 20:16:33,513 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 20:16:33,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 20:16:33,514 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 20:16:33,515 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 20:16:33,515 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 20:16:33,515 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 20:16:33,515 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 20:16:33,515 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 20:16:33,515 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 20:16:33,515 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 20:16:33,516 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 20:16:33,516 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 20:16:33,516 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 20:16:33,516 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:16:33,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-24 20:16:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:16:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:16:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 20:16:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 20:16:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 20:16:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 20:16:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 20:16:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 20:16:33,518 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 20:16:33,518 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 20:16:33,518 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 20:16:33,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 20:16:33,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 20:16:33,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:16:33,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 20:16:33,519 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 20:16:33,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:16:33,520 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 20:16:33,520 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 20:16:33,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:16:33,520 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 20:16:33,520 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 20:16:33,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 20:16:33,520 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 20:16:33,521 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 20:16:33,521 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 20:16:33,521 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 20:16:33,521 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 20:16:33,521 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 20:16:33,521 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 20:16:33,521 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 20:16:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 20:16:33,523 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 20:16:33,524 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 20:16:33,524 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 20:16:33,524 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 20:16:33,524 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 20:16:33,524 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 20:16:33,525 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-24 20:16:33,525 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 20:16:33,525 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 20:16:33,525 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 20:16:33,525 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 20:16:33,525 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 20:16:33,526 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 20:16:33,526 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 20:16:33,526 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 20:16:33,526 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 20:16:33,527 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 20:16:33,527 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:16:33,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:16:33,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 20:16:33,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:16:34,635 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:16:34,635 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 20:16:34,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:16:34 BoogieIcfgContainer [2020-09-24 20:16:34,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:16:34,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:16:34,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:16:34,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:16:34,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:16:32" (1/3) ... [2020-09-24 20:16:34,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37554a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:16:34, skipping insertion in model container [2020-09-24 20:16:34,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:16:33" (2/3) ... [2020-09-24 20:16:34,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37554a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:16:34, skipping insertion in model container [2020-09-24 20:16:34,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:16:34" (3/3) ... [2020-09-24 20:16:34,654 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product39.cil.c [2020-09-24 20:16:34,666 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:16:34,677 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:16:34,697 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:16:34,736 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:16:34,737 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:16:34,737 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:16:34,737 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:16:34,737 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:16:34,737 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:16:34,737 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:16:34,737 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:16:34,762 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2020-09-24 20:16:34,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 20:16:34,780 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:16:34,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:16:34,782 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:16:34,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:16:34,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1206638140, now seen corresponding path program 1 times [2020-09-24 20:16:34,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:16:34,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707164113] [2020-09-24 20:16:34,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:16:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:35,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:35,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:36,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:37,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:40,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:40,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 20:16:40,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:16:40,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-09-24 20:16:40,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:40,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:16:40,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 20:16:40,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 20:16:40,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:16:40,672 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 20:16:40,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:16:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:40,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:41,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:41,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 20:16:41,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:41,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-09-24 20:16:41,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:41,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:16:41,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:16:41,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 20:16:41,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:16:41,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 20:16:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:41,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:41,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:41,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:16:41,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:41,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:16:41,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:41,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:16:41,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:16:41,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:16:41,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:16:41,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 20:16:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:41,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:41,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:41,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:16:41,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:41,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 20:16:41,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:41,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:16:41,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:16:41,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:16:41,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:16:41,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 20:16:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:41,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:41,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:41,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:16:41,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:41,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:16:41,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:41,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:16:41,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:16:41,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:16:41,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:16:41,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 20:16:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:41,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:41,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:41,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:16:41,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:41,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:16:41,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:41,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:16:41,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:16:41,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:16:41,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:16:41,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 20:16:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:41,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:41,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:41,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:16:41,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:41,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:16:41,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:41,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:16:41,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:16:41,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:16:41,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:16:41,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 20:16:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:41,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:41,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:41,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:16:41,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:41,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:16:41,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:16:41,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:16:41,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:16:41,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:16:41,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:16:41,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707164113] [2020-09-24 20:16:41,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:16:41,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 20:16:41,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52547448] [2020-09-24 20:16:41,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:16:41,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:16:41,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:16:41,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:16:41,286 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 9 states. [2020-09-24 20:16:41,865 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 20:16:42,767 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 20:16:43,093 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:16:43,515 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:16:43,945 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:16:44,226 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 20:16:44,583 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:16:44,892 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 20:16:45,615 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 20:16:47,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:16:47,548 INFO L93 Difference]: Finished difference Result 654 states and 822 transitions. [2020-09-24 20:16:47,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 20:16:47,551 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 142 [2020-09-24 20:16:47,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:16:47,576 INFO L225 Difference]: With dead ends: 654 [2020-09-24 20:16:47,576 INFO L226 Difference]: Without dead ends: 453 [2020-09-24 20:16:47,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-09-24 20:16:47,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-09-24 20:16:47,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 407. [2020-09-24 20:16:47,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-09-24 20:16:47,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 472 transitions. [2020-09-24 20:16:47,727 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 472 transitions. Word has length 142 [2020-09-24 20:16:47,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:16:47,728 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 472 transitions. [2020-09-24 20:16:47,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:16:47,729 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 472 transitions. [2020-09-24 20:16:47,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-24 20:16:47,735 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:16:47,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:16:47,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:16:47,736 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:16:47,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:16:47,736 INFO L82 PathProgramCache]: Analyzing trace with hash -2132152883, now seen corresponding path program 1 times [2020-09-24 20:16:47,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:16:47,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765681025] [2020-09-24 20:16:47,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:16:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:47,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:47,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:48,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:52,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:52,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-24 20:16:52,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:16:52,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 20:16:52,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:52,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:16:52,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 20:16:52,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 20:16:52,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:16:53,141 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 20:16:53,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:16:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:53,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:53,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:53,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 20:16:53,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:53,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-09-24 20:16:53,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:53,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:16:53,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:16:53,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 20:16:53,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:16:53,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 20:16:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:53,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:53,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:53,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:16:53,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:53,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:16:53,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:16:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:16:53,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:16:53,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:16:53,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 20:16:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:53,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:53,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:53,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:16:53,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:53,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:16:53,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:53,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:16:53,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:16:53,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:16:53,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:16:53,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 20:16:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:53,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:53,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:53,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:16:53,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:53,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:16:53,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:53,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:16:53,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:16:53,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:16:53,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:16:53,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 20:16:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:53,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:53,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:53,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:16:53,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:53,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:16:53,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:16:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:16:53,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:16:53,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:16:53,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 20:16:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:53,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:53,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:53,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:16:53,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:53,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:16:53,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:53,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:16:53,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:16:53,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:16:53,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:16:53,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 20:16:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:53,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:53,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:53,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:16:53,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:53,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:16:53,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:53,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:16:53,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:16:53,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:16:53,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:16:53,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 20:16:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:53,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:53,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:16:53,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:16:53,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:16:53,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:16:53,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:16:53,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:16:53,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:16:53,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:16:53,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:16:53,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:16:53,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765681025] [2020-09-24 20:16:53,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:16:53,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:16:53,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297477527] [2020-09-24 20:16:53,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:16:53,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:16:53,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:16:53,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:16:53,573 INFO L87 Difference]: Start difference. First operand 407 states and 472 transitions. Second operand 5 states. [2020-09-24 20:16:54,105 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 20:16:56,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:16:56,210 INFO L93 Difference]: Finished difference Result 963 states and 1313 transitions. [2020-09-24 20:16:56,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:16:56,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-24 20:16:56,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:16:56,225 INFO L225 Difference]: With dead ends: 963 [2020-09-24 20:16:56,228 INFO L226 Difference]: Without dead ends: 666 [2020-09-24 20:16:56,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:16:56,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2020-09-24 20:16:56,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 551. [2020-09-24 20:16:56,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2020-09-24 20:16:56,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 688 transitions. [2020-09-24 20:16:56,338 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 688 transitions. Word has length 148 [2020-09-24 20:16:56,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:16:56,338 INFO L479 AbstractCegarLoop]: Abstraction has 551 states and 688 transitions. [2020-09-24 20:16:56,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:16:56,339 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 688 transitions. [2020-09-24 20:16:56,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-24 20:16:56,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:16:56,344 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:16:56,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:16:56,344 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:16:56,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:16:56,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1255080696, now seen corresponding path program 1 times [2020-09-24 20:16:56,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:16:56,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451990540] [2020-09-24 20:16:56,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:16:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:16:56,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:56,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:57,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:16:57,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:01,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:01,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-09-24 20:17:01,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:17:01,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:17:01,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:01,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:17:01,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 20:17:01,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-24 20:17:01,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:17:01,703 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 20:17:01,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:17:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:01,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:01,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:01,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 20:17:01,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:01,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-24 20:17:01,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:01,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:17:01,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:17:01,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 20:17:01,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:17:02,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 20:17:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:02,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:02,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:02,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:17:02,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:02,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:17:02,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:02,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:17:02,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:17:02,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:17:02,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:17:02,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 20:17:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:02,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:02,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:02,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:17:02,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:02,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:17:02,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:02,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:17:02,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:17:02,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:17:02,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:17:02,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 20:17:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:02,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:02,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:02,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:17:02,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:02,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:17:02,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:02,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:17:02,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:17:02,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:17:02,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:17:02,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 20:17:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:02,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:02,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:02,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:17:02,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:02,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:17:02,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:02,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:17:02,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:17:02,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:17:02,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:17:02,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-24 20:17:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:02,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:02,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:02,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:02,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 20:17:02,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:17:02,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-24 20:17:02,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:02,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:17:02,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-24 20:17:02,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:17:02,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:17:02,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:17:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:02,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:02,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:02,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:17:02,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:02,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 20:17:02,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:02,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:17:02,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 20:17:02,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:17:02,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:17:02,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:17:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:02,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:02,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:02,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 20:17:02,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:02,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 20:17:02,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:02,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:17:02,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:17:02,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:17:02,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 20:17:02,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:17:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:02,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:02,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:02,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 20:17:02,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:02,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 20:17:02,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:02,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:17:02,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:17:02,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 20:17:02,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:17:02,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:17:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:02,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:02,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:02,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:17:02,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:02,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:17:02,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:02,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:17:02,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:17:02,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:17:02,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:17:02,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 20:17:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:02,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:02,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:02,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 20:17:02,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:02,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:17:02,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:02,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:17:02,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 20:17:02,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:17:02,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:17:02,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 20:17:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:02,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:02,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:02,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:17:02,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:02,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:17:02,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:17:02,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 20:17:02,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:17:02,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:17:02,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:17:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:02,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:02,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:02,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:17:02,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:02,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:17:02,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:02,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:17:02,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:17:02,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:17:02,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:17:02,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-09-24 20:17:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:02,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:02,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:02,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:17:02,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:02,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:17:02,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:02,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:17:02,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:17:02,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:17:02,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:17:02,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-09-24 20:17:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:02,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:02,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:02,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:17:02,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:02,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:17:02,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:02,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:17:02,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:17:02,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:17:02,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:17:02,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-09-24 20:17:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:02,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:02,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:02,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:17:02,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:02,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:17:02,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:02,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:17:02,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:17:02,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:17:02,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:17:02,681 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 20:17:02,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451990540] [2020-09-24 20:17:02,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:17:02,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 20:17:02,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533492462] [2020-09-24 20:17:02,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:17:02,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:17:02,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:17:02,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:17:02,685 INFO L87 Difference]: Start difference. First operand 551 states and 688 transitions. Second operand 12 states. [2020-09-24 20:17:03,124 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 20:17:04,301 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 20:17:04,611 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:17:04,944 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:17:05,274 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 20:17:05,599 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:17:05,899 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 20:17:06,515 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 20:17:06,814 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 20:17:07,072 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:17:07,329 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 20:17:07,666 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 20:17:07,973 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 20:17:10,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:17:10,773 INFO L93 Difference]: Finished difference Result 1804 states and 2664 transitions. [2020-09-24 20:17:10,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 20:17:10,774 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 210 [2020-09-24 20:17:10,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:17:10,785 INFO L225 Difference]: With dead ends: 1804 [2020-09-24 20:17:10,785 INFO L226 Difference]: Without dead ends: 1363 [2020-09-24 20:17:10,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2020-09-24 20:17:10,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2020-09-24 20:17:10,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1011. [2020-09-24 20:17:10,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2020-09-24 20:17:10,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1283 transitions. [2020-09-24 20:17:10,997 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1283 transitions. Word has length 210 [2020-09-24 20:17:10,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:17:10,998 INFO L479 AbstractCegarLoop]: Abstraction has 1011 states and 1283 transitions. [2020-09-24 20:17:10,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:17:10,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1283 transitions. [2020-09-24 20:17:11,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-24 20:17:11,003 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:17:11,004 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:17:11,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:17:11,004 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:17:11,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:17:11,005 INFO L82 PathProgramCache]: Analyzing trace with hash 813567962, now seen corresponding path program 1 times [2020-09-24 20:17:11,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:17:11,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606350559] [2020-09-24 20:17:11,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:17:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:11,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:11,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:11,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:11,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:11,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:14,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:14,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-09-24 20:17:14,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:17:14,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3428 [2020-09-24 20:17:14,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:14,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:17:14,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-09-24 20:17:14,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:17:14,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:17:14,749 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 20:17:14,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:17:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:14,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:14,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:14,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 20:17:14,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:14,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-24 20:17:14,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:14,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:17:14,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:17:14,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:17:14,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:17:14,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 20:17:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:14,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:14,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:14,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:17:14,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:14,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:17:14,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:14,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:17:14,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:17:14,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:17:14,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:17:14,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 20:17:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:14,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:14,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:14,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:17:14,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:14,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:17:14,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:14,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:17:14,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:17:14,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:17:14,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:17:14,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 20:17:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:14,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:14,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:14,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:17:14,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:14,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:17:14,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:14,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:17:14,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:17:14,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:17:14,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:17:14,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 20:17:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:14,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:14,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:14,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:17:14,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:14,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:17:14,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:14,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:17:14,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:17:14,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:17:14,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:17:14,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 20:17:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:14,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:14,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:14,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:17:14,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:14,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:17:14,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:14,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:17:14,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:17:14,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:17:14,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:17:14,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-24 20:17:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:14,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:15,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:15,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 20:17:15,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:15,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-24 20:17:15,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:15,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:17:15,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 20:17:15,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:17:15,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:17:15,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:17:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:15,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:15,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:15,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:17:15,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:15,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 20:17:15,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:15,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:17:15,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 20:17:15,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:17:15,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:17:15,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:17:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:15,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:15,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:15,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 20:17:15,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:15,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 20:17:15,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:17:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:17:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:17:15,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:17:15,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:17:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:15,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:15,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:15,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 20:17:15,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:15,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 20:17:15,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:15,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:17:15,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:17:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:17:15,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:17:15,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:17:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:15,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:15,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:15,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:17:15,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:15,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:17:15,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:17:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:17:15,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:17:15,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:17:15,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 20:17:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:15,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:15,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:15,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 20:17:15,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:15,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:17:15,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:15,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:17:15,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 20:17:15,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:17:15,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:17:15,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 20:17:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:15,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:15,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:15,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:17:15,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:15,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:17:15,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:15,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:17:15,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 20:17:15,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:17:15,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:17:15,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:17:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:15,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:15,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:15,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:17:15,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:15,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:17:15,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:15,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:17:15,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:17:15,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:17:15,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:17:15,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-09-24 20:17:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:15,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:15,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:15,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:17:15,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:15,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:17:15,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:15,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:17:15,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:17:15,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:17:15,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:17:15,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-09-24 20:17:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:15,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:15,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:15,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:17:15,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:15,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:17:15,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:15,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:17:15,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:17:15,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:17:15,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:17:15,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-09-24 20:17:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:15,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:15,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:17:15,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:17:15,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:17:15,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:17:15,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:17:15,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:17:15,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:17:15,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:17:15,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:17:15,494 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 20:17:15,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606350559] [2020-09-24 20:17:15,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:17:15,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 20:17:15,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732063005] [2020-09-24 20:17:15,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:17:15,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:17:15,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:17:15,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:17:15,498 INFO L87 Difference]: Start difference. First operand 1011 states and 1283 transitions. Second operand 11 states. [2020-09-24 20:17:16,776 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 20:17:17,098 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 20:17:17,377 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 20:17:17,701 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 20:17:17,965 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 20:17:19,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:17:19,406 INFO L93 Difference]: Finished difference Result 2207 states and 3111 transitions. [2020-09-24 20:17:19,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 20:17:19,406 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 229 [2020-09-24 20:17:19,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:17:19,420 INFO L225 Difference]: With dead ends: 2207 [2020-09-24 20:17:19,421 INFO L226 Difference]: Without dead ends: 1306 [2020-09-24 20:17:19,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-09-24 20:17:19,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2020-09-24 20:17:19,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 993. [2020-09-24 20:17:19,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 993 states. [2020-09-24 20:17:19,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1243 transitions. [2020-09-24 20:17:19,649 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1243 transitions. Word has length 229 [2020-09-24 20:17:19,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:17:19,651 INFO L479 AbstractCegarLoop]: Abstraction has 993 states and 1243 transitions. [2020-09-24 20:17:19,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:17:19,652 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1243 transitions. [2020-09-24 20:17:19,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-24 20:17:19,662 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:17:19,662 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:17:19,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:17:19,663 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:17:19,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:17:19,663 INFO L82 PathProgramCache]: Analyzing trace with hash -2126583235, now seen corresponding path program 1 times [2020-09-24 20:17:19,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:17:19,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257659245] [2020-09-24 20:17:19,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:17:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:17:19,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:19,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:20,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:17:20,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking...