/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=NARROWEST --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_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:54:21,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:54:21,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:54:21,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:54:21,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:54:21,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:54:21,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:54:21,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:54:21,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:54:21,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:54:21,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:54:21,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:54:21,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:54:21,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:54:21,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:54:21,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:54:21,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:54:21,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:54:21,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:54:21,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:54:21,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:54:21,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:54:21,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:54:21,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:54:21,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:54:21,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:54:21,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:54:21,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:54:21,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:54:21,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:54:21,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:54:21,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:54:21,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:54:21,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:54:21,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:54:21,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:54:21,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:54:21,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:54:21,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:54:21,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:54:21,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:54:21,814 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 [2020-09-25 01:54:21,860 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:54:21,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:54:21,864 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:54:21,864 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:54:21,865 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:54:21,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:54:21,865 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:54:21,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:54:21,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:54:21,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:54:21,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:54:21,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:54:21,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:54:21,868 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:54:21,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:54:21,869 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:54:21,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:54:21,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:54:21,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:54:21,870 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:54:21,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:54:21,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:54:21,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:54:21,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:54:21,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:54:21,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:54:21,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:54:21,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:54:21,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:54:21,872 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 01:54:22,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:54:22,403 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:54:22,408 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:54:22,410 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:54:22,410 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:54:22,412 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c [2020-09-25 01:54:22,495 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e461d683/bf35d210639146dd96f6333c74619908/FLAG7a9b3ec01 [2020-09-25 01:54:23,149 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:54:23,150 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c [2020-09-25 01:54:23,187 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e461d683/bf35d210639146dd96f6333c74619908/FLAG7a9b3ec01 [2020-09-25 01:54:23,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e461d683/bf35d210639146dd96f6333c74619908 [2020-09-25 01:54:23,425 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:54:23,432 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:54:23,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:54:23,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:54:23,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:54:23,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:54:23" (1/1) ... [2020-09-25 01:54:23,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c1631b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:23, skipping insertion in model container [2020-09-25 01:54:23,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:54:23" (1/1) ... [2020-09-25 01:54:23,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:54:23,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:54:24,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:54:24,036 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:54:24,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:54:24,168 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:54:24,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:24 WrapperNode [2020-09-25 01:54:24,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:54:24,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:54:24,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:54:24,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:54:24,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:24" (1/1) ... [2020-09-25 01:54:24,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:24" (1/1) ... [2020-09-25 01:54:24,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:24" (1/1) ... [2020-09-25 01:54:24,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:24" (1/1) ... [2020-09-25 01:54:24,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:24" (1/1) ... [2020-09-25 01:54:24,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:24" (1/1) ... [2020-09-25 01:54:24,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:24" (1/1) ... [2020-09-25 01:54:24,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:54:24,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:54:24,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:54:24,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:54:24,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:24" (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 [2020-09-25 01:54:24,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:54:24,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:54:24,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 01:54:24,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 01:54:24,379 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 01:54:24,379 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 01:54:24,380 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 01:54:24,380 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 01:54:24,380 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 01:54:24,380 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 01:54:24,380 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-25 01:54:24,381 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-25 01:54:24,381 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 01:54:24,381 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 01:54:24,381 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 01:54:24,381 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 01:54:24,382 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:54:24,382 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 01:54:24,382 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 01:54:24,382 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-25 01:54:24,382 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 01:54:24,383 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 01:54:24,383 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 01:54:24,383 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 01:54:24,383 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 01:54:24,383 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 01:54:24,383 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-25 01:54:24,384 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-25 01:54:24,384 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 01:54:24,384 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 01:54:24,384 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 01:54:24,384 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 01:54:24,384 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 01:54:24,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-25 01:54:24,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 01:54:24,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 01:54:24,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 01:54:24,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 01:54:24,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 01:54:24,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 01:54:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:54:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:54:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 01:54:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 01:54:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 01:54:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 01:54:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 01:54:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 01:54:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 01:54:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 01:54:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-25 01:54:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-25 01:54:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:54:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 01:54:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 01:54:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 01:54:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 01:54:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 01:54:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 01:54:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 01:54:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 01:54:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 01:54:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 01:54:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:54:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 01:54:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 01:54:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 01:54:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-25 01:54:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 01:54:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 01:54:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-25 01:54:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-25 01:54:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-25 01:54:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 01:54:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 01:54:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 01:54:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 01:54:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 01:54:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 01:54:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 01:54:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 01:54:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:54:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 01:54:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 01:54:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:54:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 01:54:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 01:54:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:54:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 01:54:24,394 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 01:54:24,394 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 01:54:24,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:54:24,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 01:54:24,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:54:25,585 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:54:25,586 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 01:54:25,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:54:25 BoogieIcfgContainer [2020-09-25 01:54:25,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:54:25,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:54:25,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:54:25,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:54:25,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:54:23" (1/3) ... [2020-09-25 01:54:25,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4567191a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:54:25, skipping insertion in model container [2020-09-25 01:54:25,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:24" (2/3) ... [2020-09-25 01:54:25,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4567191a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:54:25, skipping insertion in model container [2020-09-25 01:54:25,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:54:25" (3/3) ... [2020-09-25 01:54:25,603 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product49.cil.c [2020-09-25 01:54:25,615 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:54:25,627 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:54:25,653 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:54:25,687 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:54:25,687 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:54:25,687 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:54:25,687 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:54:25,688 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:54:25,688 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:54:25,688 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:54:25,688 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:54:25,718 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2020-09-25 01:54:25,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 01:54:25,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:25,739 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] [2020-09-25 01:54:25,740 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:25,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:25,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1194640378, now seen corresponding path program 1 times [2020-09-25 01:54:25,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:25,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855031141] [2020-09-25 01:54:25,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:26,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:26,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:26,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:28,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:28,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 01:54:31,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:54:31,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 01:54:31,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:31,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 01:54:31,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:31,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 01:54:31,525 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:54:31,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:54:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:54:31,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 01:54:31,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:31,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:31,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:31,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:31,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:54:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:31,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:31,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:31,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:31,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:31,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:54:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:31,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:31,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:31,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:31,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:31,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:31,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:54:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:31,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:54:31,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:31,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:31,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:31,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:31,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:54:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:31,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:31,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:31,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:31,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:31,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:31,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 01:54:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:31,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:31,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:31,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:31,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:31,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 01:54:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:31,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:31,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:31,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:31,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:31,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:31,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:54:31,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855031141] [2020-09-25 01:54:31,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:54:31,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 01:54:31,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189139935] [2020-09-25 01:54:31,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 01:54:31,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:54:31,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 01:54:31,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:54:31,853 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2020-09-25 01:54:33,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:54:33,327 INFO L93 Difference]: Finished difference Result 489 states and 580 transitions. [2020-09-25 01:54:33,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 01:54:33,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-25 01:54:33,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:54:33,350 INFO L225 Difference]: With dead ends: 489 [2020-09-25 01:54:33,351 INFO L226 Difference]: Without dead ends: 302 [2020-09-25 01:54:33,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:54:33,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-09-25 01:54:33,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 261. [2020-09-25 01:54:33,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-09-25 01:54:33,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 283 transitions. [2020-09-25 01:54:33,463 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 283 transitions. Word has length 142 [2020-09-25 01:54:33,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:54:33,465 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 283 transitions. [2020-09-25 01:54:33,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 01:54:33,465 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 283 transitions. [2020-09-25 01:54:33,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 01:54:33,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:33,470 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] [2020-09-25 01:54:33,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:54:33,470 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:33,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:33,471 INFO L82 PathProgramCache]: Analyzing trace with hash -484006528, now seen corresponding path program 1 times [2020-09-25 01:54:33,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:33,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765795268] [2020-09-25 01:54:33,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:33,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:33,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:34,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:35,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:38,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:38,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 01:54:38,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:54:38,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 01:54:38,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:38,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:54:38,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 01:54:38,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 01:54:38,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:38,845 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:54:38,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:54:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:38,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:38,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:38,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:54:38,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:38,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 01:54:38,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:38,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:38,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:38,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:38,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:39,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:54:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:39,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:39,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:39,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:39,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:39,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:39,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:39,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:39,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:39,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:39,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:39,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:54:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:39,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:39,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:39,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:39,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:39,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:39,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:39,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:39,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:39,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:39,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:39,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:54:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:39,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:39,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:39,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:39,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:39,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:54:39,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:39,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:39,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:39,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:39,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:39,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:54:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:39,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:39,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:39,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:39,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:39,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:39,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:39,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:39,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 01:54:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:39,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:39,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:39,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:39,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:39,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:39,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:39,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:39,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:39,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:39,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:39,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 01:54:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:39,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:39,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:39,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:39,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:39,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:39,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:39,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:39,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:39,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:54:39,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765795268] [2020-09-25 01:54:39,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:54:39,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:54:39,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191272633] [2020-09-25 01:54:39,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:54:39,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:54:39,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:54:39,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:54:39,138 INFO L87 Difference]: Start difference. First operand 261 states and 283 transitions. Second operand 4 states. [2020-09-25 01:54:39,783 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:54:40,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:54:40,765 INFO L93 Difference]: Finished difference Result 406 states and 455 transitions. [2020-09-25 01:54:40,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:54:40,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-25 01:54:40,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:54:40,769 INFO L225 Difference]: With dead ends: 406 [2020-09-25 01:54:40,770 INFO L226 Difference]: Without dead ends: 285 [2020-09-25 01:54:40,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:54:40,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-09-25 01:54:40,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 251. [2020-09-25 01:54:40,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-09-25 01:54:40,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 270 transitions. [2020-09-25 01:54:40,833 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 270 transitions. Word has length 143 [2020-09-25 01:54:40,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:54:40,834 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 270 transitions. [2020-09-25 01:54:40,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:54:40,834 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 270 transitions. [2020-09-25 01:54:40,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 01:54:40,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:40,838 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, 1, 1, 1, 1] [2020-09-25 01:54:40,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:54:40,838 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:40,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:40,839 INFO L82 PathProgramCache]: Analyzing trace with hash 110420077, now seen corresponding path program 1 times [2020-09-25 01:54:40,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:40,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059324634] [2020-09-25 01:54:40,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:40,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:41,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:41,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:42,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:45,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:45,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 01:54:45,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:54:45,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-09-25 01:54:45,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:45,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:54:45,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 01:54:45,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 01:54:45,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:46,223 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:54:46,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:54:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:46,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:46,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:46,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:54:46,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:46,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 01:54:46,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:46,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:46,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:46,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:46,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:46,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:54:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:46,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:46,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:46,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:46,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:46,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:46,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:46,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:46,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:46,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:54:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:46,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:46,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:46,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:46,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:46,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:46,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:46,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:46,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:46,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:46,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:46,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:54:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:46,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:46,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:46,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:46,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:46,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:46,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:46,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:46,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:46,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:46,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:46,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:54:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:46,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:46,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:46,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:46,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:46,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:46,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:46,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:46,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:46,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:46,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:46,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 01:54:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:46,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:46,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:46,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:46,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:46,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:46,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:46,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:54:46,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:46,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:54:46,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:46,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-25 01:54:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:46,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:46,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:46,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:46,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:46,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:54:46,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:46,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:54:46,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:46,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:54:46,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:46,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:54:46,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059324634] [2020-09-25 01:54:46,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:54:46,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 01:54:46,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157119780] [2020-09-25 01:54:46,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 01:54:46,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:54:46,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 01:54:46,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:54:46,446 INFO L87 Difference]: Start difference. First operand 251 states and 270 transitions. Second operand 8 states. [2020-09-25 01:54:47,069 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:54:48,373 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:54:48,678 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:54:49,005 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:54:49,349 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:54:49,669 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:54:50,284 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:54:50,631 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:54:50,979 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:54:51,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:54:51,791 INFO L93 Difference]: Finished difference Result 507 states and 586 transitions. [2020-09-25 01:54:51,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 01:54:51,792 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 152 [2020-09-25 01:54:51,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:54:51,796 INFO L225 Difference]: With dead ends: 507 [2020-09-25 01:54:51,797 INFO L226 Difference]: Without dead ends: 366 [2020-09-25 01:54:51,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-25 01:54:51,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-09-25 01:54:51,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 337. [2020-09-25 01:54:51,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-09-25 01:54:51,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 375 transitions. [2020-09-25 01:54:51,855 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 375 transitions. Word has length 152 [2020-09-25 01:54:51,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:54:51,856 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 375 transitions. [2020-09-25 01:54:51,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 01:54:51,856 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 375 transitions. [2020-09-25 01:54:51,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 01:54:51,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:51,859 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:54:51,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:54:51,860 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:51,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:51,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1791967861, now seen corresponding path program 1 times [2020-09-25 01:54:51,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:51,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913307710] [2020-09-25 01:54:51,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:51,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:52,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:56,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:56,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-25 01:54:56,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:54:56,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 01:54:56,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:56,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:54:56,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-09-25 01:54:56,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:54:56,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:57,196 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:54:57,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:54:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:57,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:57,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:57,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:54:57,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:57,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 01:54:57,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:57,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:57,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:57,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:57,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:57,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:54:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:57,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:57,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:57,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:57,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:57,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:57,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:57,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:57,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:57,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:57,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:57,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:54:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:57,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:57,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:57,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:57,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:57,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:57,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:57,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:57,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:57,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:57,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:57,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:54:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:57,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:57,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:57,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:57,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:57,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:57,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:57,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:57,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:57,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:57,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:57,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:54:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:57,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:57,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:57,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:57,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:57,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:57,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:57,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:57,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:57,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:57,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:57,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-25 01:54:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:57,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:57,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:57,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 01:54:57,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:57,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 01:54:57,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:57,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:54:57,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 01:54:57,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:54:57,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:57,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:54:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:57,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:57,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:57,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 01:54:57,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:57,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 01:54:57,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:57,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:54:57,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 01:54:57,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:54:57,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:57,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:54:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:57,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:57,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:57,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 01:54:57,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:57,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 01:54:57,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:57,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:54:57,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:57,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 01:54:57,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:57,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 01:54:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:57,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:57,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:57,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 01:54:57,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:57,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:57,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:57,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:57,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 01:54:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:57,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:57,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:57,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:54:57,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:57,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:57,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:57,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:57,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 01:54:57,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:57,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:57,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-09-25 01:54:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:57,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:57,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:57,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:57,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:57,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:57,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:57,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:57,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:57,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:57,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:57,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-25 01:54:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:57,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:57,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:57,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:57,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:57,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:57,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:57,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:57,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:57,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:57,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:57,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:54:57,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913307710] [2020-09-25 01:54:57,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:54:57,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 01:54:57,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605942704] [2020-09-25 01:54:57,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 01:54:57,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:54:57,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 01:54:57,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:54:57,627 INFO L87 Difference]: Start difference. First operand 337 states and 375 transitions. Second operand 9 states. [2020-09-25 01:54:59,086 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:54:59,399 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 01:54:59,723 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:55:00,052 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:55:00,369 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 01:55:00,670 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:55:01,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:55:01,513 INFO L93 Difference]: Finished difference Result 624 states and 730 transitions. [2020-09-25 01:55:01,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 01:55:01,514 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 190 [2020-09-25 01:55:01,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:55:01,519 INFO L225 Difference]: With dead ends: 624 [2020-09-25 01:55:01,519 INFO L226 Difference]: Without dead ends: 397 [2020-09-25 01:55:01,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-09-25 01:55:01,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-09-25 01:55:01,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 345. [2020-09-25 01:55:01,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-09-25 01:55:01,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 383 transitions. [2020-09-25 01:55:01,563 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 383 transitions. Word has length 190 [2020-09-25 01:55:01,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:55:01,564 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 383 transitions. [2020-09-25 01:55:01,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 01:55:01,564 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 383 transitions. [2020-09-25 01:55:01,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 01:55:01,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:55:01,567 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:55:01,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:55:01,567 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:55:01,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:55:01,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1529129259, now seen corresponding path program 1 times [2020-09-25 01:55:01,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:55:01,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005325714] [2020-09-25 01:55:01,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:55:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:01,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:02,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:06,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:06,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-25 01:55:06,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:55:06,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4682 [2020-09-25 01:55:06,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:55:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-25 01:55:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:55:06,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:55:06,592 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:55:06,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:55:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:06,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:06,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:06,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:55:06,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:06,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 01:55:06,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:06,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:55:06,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:55:06,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:55:06,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:55:06,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:55:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:06,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:06,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:06,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:55:06,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:06,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:55:06,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:06,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:55:06,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:55:06,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:55:06,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:55:06,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:55:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:06,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:06,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:06,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:55:06,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:06,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:55:06,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:06,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:55:06,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:55:06,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:55:06,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:55:06,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:55:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:06,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:06,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:06,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:55:06,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:06,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:55:06,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:06,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:55:06,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:55:06,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:55:06,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:55:06,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:55:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:06,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:06,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:06,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:55:06,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:06,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:55:06,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:06,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:55:06,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:55:06,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:55:06,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:55:06,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-25 01:55:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:06,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:06,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:06,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 01:55:06,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:06,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 01:55:06,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:06,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:55:06,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 01:55:06,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:55:06,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:55:06,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:55:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:06,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:06,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:06,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 01:55:06,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:06,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 01:55:06,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:06,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:55:06,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 01:55:06,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:55:06,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:55:06,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:55:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:06,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:06,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:06,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 01:55:06,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:06,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 01:55:06,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:06,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:55:06,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 01:55:06,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:55:06,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:55:06,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 01:55:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:06,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:06,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:06,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 01:55:06,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:06,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:55:06,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:06,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:55:06,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:55:06,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:55:06,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:55:06,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 01:55:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:06,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:06,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:06,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:55:06,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:06,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:55:06,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:06,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:55:06,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 01:55:06,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:55:06,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:55:06,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-09-25 01:55:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:06,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:06,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:06,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:55:06,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:06,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:55:06,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:55:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:55:06,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:55:06,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:55:06,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-25 01:55:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:06,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:06,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:06,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:55:06,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:06,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:55:06,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:06,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:55:06,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:55:06,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:55:06,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:55:07,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:55:07,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005325714] [2020-09-25 01:55:07,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:55:07,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 01:55:07,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053919978] [2020-09-25 01:55:07,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 01:55:07,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:55:07,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 01:55:07,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:55:07,038 INFO L87 Difference]: Start difference. First operand 345 states and 383 transitions. Second operand 8 states. [2020-09-25 01:55:08,293 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:55:08,636 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 01:55:08,992 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:55:09,333 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 01:55:09,651 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:55:10,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:55:10,581 INFO L93 Difference]: Finished difference Result 643 states and 760 transitions. [2020-09-25 01:55:10,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 01:55:10,582 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 190 [2020-09-25 01:55:10,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:55:10,586 INFO L225 Difference]: With dead ends: 643 [2020-09-25 01:55:10,586 INFO L226 Difference]: Without dead ends: 408 [2020-09-25 01:55:10,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-25 01:55:10,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2020-09-25 01:55:10,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 351. [2020-09-25 01:55:10,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-09-25 01:55:10,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 389 transitions. [2020-09-25 01:55:10,627 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 389 transitions. Word has length 190 [2020-09-25 01:55:10,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:55:10,628 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 389 transitions. [2020-09-25 01:55:10,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 01:55:10,628 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 389 transitions. [2020-09-25 01:55:10,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 01:55:10,631 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:55:10,631 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:55:10,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:55:10,632 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:55:10,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:55:10,632 INFO L82 PathProgramCache]: Analyzing trace with hash -111164722, now seen corresponding path program 1 times [2020-09-25 01:55:10,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:55:10,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459814315] [2020-09-25 01:55:10,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:55:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:10,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:11,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking...