/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=SMALLEST --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_spec1_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:55:04,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:55:04,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:55:04,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:55:04,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:55:04,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:55:04,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:55:04,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:55:04,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:55:04,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:55:04,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:55:04,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:55:04,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:55:04,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:55:04,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:55:04,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:55:04,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:55:04,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:55:04,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:55:04,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:55:04,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:55:04,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:55:04,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:55:04,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:55:04,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:55:04,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:55:04,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:55:04,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:55:04,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:55:04,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:55:04,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:55:04,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:55:04,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:55:04,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:55:04,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:55:04,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:55:04,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:55:04,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:55:04,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:55:04,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:55:04,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:55:04,809 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 17:55:04,855 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:55:04,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:55:04,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:55:04,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:55:04,858 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:55:04,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:55:04,859 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:55:04,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:55:04,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:55:04,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:55:04,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:55:04,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:55:04,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:55:04,862 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:55:04,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:55:04,862 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:55:04,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:55:04,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:55:04,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:55:04,864 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:55:04,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:55:04,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:55:04,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:55:04,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:55:04,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:55:04,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:55:04,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:55:04,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:55:04,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:55:04,871 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 17:55:05,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:55:05,344 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:55:05,349 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:55:05,351 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:55:05,351 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:55:05,353 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product40.cil.c [2020-09-24 17:55:05,435 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b453eee61/7db1c21269c84201bb60a94fc1041ef8/FLAG4683f3120 [2020-09-24 17:55:06,069 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:55:06,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product40.cil.c [2020-09-24 17:55:06,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b453eee61/7db1c21269c84201bb60a94fc1041ef8/FLAG4683f3120 [2020-09-24 17:55:06,388 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b453eee61/7db1c21269c84201bb60a94fc1041ef8 [2020-09-24 17:55:06,401 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:55:06,407 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:55:06,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:55:06,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:55:06,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:55:06,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:55:06" (1/1) ... [2020-09-24 17:55:06,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@625d319a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:55:06, skipping insertion in model container [2020-09-24 17:55:06,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:55:06" (1/1) ... [2020-09-24 17:55:06,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:55:06,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:55:06,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:55:07,008 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:55:07,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:55:07,181 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:55:07,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:55:07 WrapperNode [2020-09-24 17:55:07,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:55:07,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:55:07,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:55:07,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:55:07,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:55:07" (1/1) ... [2020-09-24 17:55:07,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:55:07" (1/1) ... [2020-09-24 17:55:07,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:55:07" (1/1) ... [2020-09-24 17:55:07,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:55:07" (1/1) ... [2020-09-24 17:55:07,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:55:07" (1/1) ... [2020-09-24 17:55:07,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:55:07" (1/1) ... [2020-09-24 17:55:07,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:55:07" (1/1) ... [2020-09-24 17:55:07,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:55:07,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:55:07,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:55:07,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:55:07,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:55:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:55:07,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:55:07,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:55:07,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 17:55:07,392 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 17:55:07,392 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 17:55:07,393 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 17:55:07,393 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 17:55:07,393 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 17:55:07,393 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 17:55:07,393 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 17:55:07,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 17:55:07,394 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 17:55:07,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 17:55:07,394 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 17:55:07,394 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 17:55:07,395 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 17:55:07,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-24 17:55:07,395 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 17:55:07,395 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 17:55:07,396 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 17:55:07,396 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 17:55:07,396 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:55:07,397 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 17:55:07,397 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 17:55:07,397 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 17:55:07,398 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 17:55:07,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 17:55:07,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 17:55:07,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 17:55:07,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 17:55:07,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 17:55:07,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 17:55:07,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 17:55:07,399 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 17:55:07,400 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 17:55:07,400 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 17:55:07,400 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 17:55:07,400 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 17:55:07,400 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 17:55:07,400 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 17:55:07,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:55:07,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:55:07,401 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 17:55:07,401 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 17:55:07,402 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 17:55:07,402 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 17:55:07,402 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 17:55:07,402 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 17:55:07,402 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 17:55:07,403 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 17:55:07,403 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 17:55:07,403 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 17:55:07,403 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 17:55:07,404 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 17:55:07,404 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-24 17:55:07,404 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 17:55:07,404 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 17:55:07,404 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 17:55:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 17:55:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 17:55:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 17:55:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 17:55:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 17:55:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 17:55:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 17:55:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 17:55:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 17:55:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 17:55:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 17:55:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 17:55:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 17:55:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 17:55:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:55:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 17:55:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 17:55:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 17:55:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 17:55:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 17:55:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 17:55:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 17:55:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 17:55:07,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 17:55:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 17:55:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 17:55:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 17:55:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 17:55:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 17:55:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 17:55:07,414 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 17:55:07,414 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 17:55:07,414 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 17:55:07,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:55:07,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 17:55:07,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:55:08,952 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:55:08,952 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 17:55:08,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:55:08 BoogieIcfgContainer [2020-09-24 17:55:08,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:55:08,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:55:08,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:55:08,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:55:08,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:55:06" (1/3) ... [2020-09-24 17:55:08,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e540fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:55:08, skipping insertion in model container [2020-09-24 17:55:08,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:55:07" (2/3) ... [2020-09-24 17:55:08,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e540fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:55:08, skipping insertion in model container [2020-09-24 17:55:08,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:55:08" (3/3) ... [2020-09-24 17:55:08,972 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product40.cil.c [2020-09-24 17:55:08,989 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:55:09,001 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:55:09,021 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:55:09,056 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:55:09,056 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:55:09,057 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:55:09,057 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:55:09,057 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:55:09,057 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:55:09,057 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:55:09,057 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:55:09,088 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-09-24 17:55:09,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 17:55:09,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:55:09,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:55:09,110 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:55:09,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:55:09,118 INFO L82 PathProgramCache]: Analyzing trace with hash -483838742, now seen corresponding path program 1 times [2020-09-24 17:55:09,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:55:09,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132772272] [2020-09-24 17:55:09,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:55:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:09,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:09,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:11,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:12,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:13,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:14,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:14,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 17:55:14,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 17:55:14,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 17:55:14,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:14,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:14,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 17:55:14,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:14,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 17:55:14,943 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 17:55:14,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:55:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:14,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:15,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:15,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 17:55:15,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:15,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-24 17:55:15,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:15,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:15,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:15,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:15,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:15,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 17:55:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:15,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:15,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:15,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:55:15,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:15,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:55:15,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:15,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:15,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:15,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:15,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:15,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 17:55:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:15,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:15,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:15,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:55:15,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:15,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:55:15,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:15,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:15,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:15,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:15,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:55:15,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 17:55:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:15,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:15,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:15,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:55:15,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:15,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:55:15,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:15,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:15,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:15,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:15,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:55:15,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 17:55:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:15,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:15,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:15,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:55:15,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:15,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:55:15,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:15,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:15,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:15,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:15,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:15,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 17:55:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:15,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:15,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:15,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:55:15,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:15,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:55:15,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:15,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:15,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:55:15,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:15,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:15,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 17:55:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:15,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:15,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:15,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:55:15,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:15,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:55:15,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:55:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:15,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:15,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:55:15,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132772272] [2020-09-24 17:55:15,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:55:15,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:55:15,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341013611] [2020-09-24 17:55:15,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:55:15,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:55:15,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:55:15,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:55:15,320 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 3 states. [2020-09-24 17:55:16,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:55:16,873 INFO L93 Difference]: Finished difference Result 490 states and 587 transitions. [2020-09-24 17:55:16,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:55:16,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-24 17:55:16,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:55:16,910 INFO L225 Difference]: With dead ends: 490 [2020-09-24 17:55:16,911 INFO L226 Difference]: Without dead ends: 304 [2020-09-24 17:55:16,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:55:16,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-09-24 17:55:17,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 260. [2020-09-24 17:55:17,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-09-24 17:55:17,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 284 transitions. [2020-09-24 17:55:17,070 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 284 transitions. Word has length 142 [2020-09-24 17:55:17,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:55:17,071 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 284 transitions. [2020-09-24 17:55:17,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:55:17,071 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 284 transitions. [2020-09-24 17:55:17,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-24 17:55:17,077 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:55:17,077 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] [2020-09-24 17:55:17,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:55:17,078 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:55:17,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:55:17,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1956801941, now seen corresponding path program 1 times [2020-09-24 17:55:17,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:55:17,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647156955] [2020-09-24 17:55:17,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:55:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:17,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:17,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:18,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:19,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:20,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:22,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:22,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-24 17:55:22,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 17:55:22,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-09-24 17:55:22,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:22,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:55:22,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 17:55:22,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 17:55:22,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:55:22,587 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 17:55:22,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:55:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:22,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:22,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:22,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 17:55:22,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:22,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-24 17:55:22,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:22,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:22,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:22,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:22,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:55:22,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 17:55:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:22,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:22,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:22,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:55:22,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:22,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:55:22,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:22,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:22,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:22,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:22,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:55:22,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 17:55:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:22,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:22,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:22,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:55:22,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:22,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:55:22,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:22,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:22,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:22,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:22,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:22,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 17:55:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:22,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:22,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:22,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:55:22,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:22,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:55:22,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:22,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:22,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:22,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:22,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:22,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 17:55:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:22,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:22,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:22,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:55:22,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:22,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:55:22,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:22,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:22,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:22,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:22,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:22,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 17:55:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:22,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:22,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:22,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:55:22,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:22,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:55:22,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:22,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:22,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:55:22,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:22,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:55:22,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 17:55:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:22,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:22,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:22,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:55:22,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:22,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:55:22,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:22,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:22,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:55:22,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:22,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:22,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:55:22,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647156955] [2020-09-24 17:55:22,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:55:22,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 17:55:22,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451230598] [2020-09-24 17:55:22,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 17:55:22,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:55:22,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 17:55:22,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:55:22,877 INFO L87 Difference]: Start difference. First operand 260 states and 284 transitions. Second operand 4 states. [2020-09-24 17:55:23,552 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 17:55:24,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:55:24,595 INFO L93 Difference]: Finished difference Result 397 states and 450 transitions. [2020-09-24 17:55:24,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:55:24,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-24 17:55:24,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:55:24,606 INFO L225 Difference]: With dead ends: 397 [2020-09-24 17:55:24,606 INFO L226 Difference]: Without dead ends: 287 [2020-09-24 17:55:24,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:55:24,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-09-24 17:55:24,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 250. [2020-09-24 17:55:24,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-09-24 17:55:24,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 271 transitions. [2020-09-24 17:55:24,668 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 271 transitions. Word has length 143 [2020-09-24 17:55:24,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:55:24,669 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 271 transitions. [2020-09-24 17:55:24,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 17:55:24,669 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 271 transitions. [2020-09-24 17:55:24,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 17:55:24,673 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:55:24,673 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] [2020-09-24 17:55:24,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:55:24,673 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:55:24,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:55:24,674 INFO L82 PathProgramCache]: Analyzing trace with hash 156166343, now seen corresponding path program 1 times [2020-09-24 17:55:24,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:55:24,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633756911] [2020-09-24 17:55:24,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:55:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:24,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:24,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:25,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:26,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:29,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:29,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 17:55:29,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:55:29,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 17:55:29,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:29,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:55:29,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-24 17:55:29,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:55:29,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:55:30,062 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 17:55:30,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:55:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:30,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:30,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:30,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 17:55:30,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:30,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-24 17:55:30,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:30,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:30,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:30,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:30,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:30,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 17:55:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:30,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:30,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:30,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:55:30,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:30,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:55:30,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:30,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:30,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:30,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:30,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:30,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 17:55:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:30,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:30,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:30,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:55:30,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:30,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:55:30,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:30,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:30,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:30,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:30,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:30,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 17:55:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:30,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:30,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:30,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:55:30,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:30,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:55:30,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:30,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:30,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:30,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:30,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:30,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 17:55:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:30,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:30,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:30,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:55:30,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:30,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:55:30,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:30,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:30,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:30,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:30,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:30,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 17:55:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:30,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:30,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:30,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:55:30,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:30,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:55:30,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:30,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:55:30,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:30,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 17:55:30,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:30,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 17:55:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:30,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:30,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:30,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:55:30,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:30,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:55:30,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:30,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:55:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:30,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:30,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 17:55:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:30,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:30,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:30,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:55:30,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:30,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:55:30,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:30,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:30,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:55:30,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:30,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:55:30,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:55:30,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633756911] [2020-09-24 17:55:30,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:55:30,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 17:55:30,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558737123] [2020-09-24 17:55:30,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:55:30,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:55:30,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:55:30,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:55:30,294 INFO L87 Difference]: Start difference. First operand 250 states and 271 transitions. Second operand 5 states. [2020-09-24 17:55:30,819 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 17:55:32,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:55:32,839 INFO L93 Difference]: Finished difference Result 600 states and 700 transitions. [2020-09-24 17:55:32,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 17:55:32,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-24 17:55:32,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:55:32,846 INFO L225 Difference]: With dead ends: 600 [2020-09-24 17:55:32,846 INFO L226 Difference]: Without dead ends: 460 [2020-09-24 17:55:32,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:55:32,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-09-24 17:55:32,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 380. [2020-09-24 17:55:32,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-09-24 17:55:32,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 423 transitions. [2020-09-24 17:55:32,923 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 423 transitions. Word has length 156 [2020-09-24 17:55:32,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:55:32,924 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 423 transitions. [2020-09-24 17:55:32,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:55:32,924 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 423 transitions. [2020-09-24 17:55:32,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-24 17:55:32,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:55:32,928 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] [2020-09-24 17:55:32,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:55:32,928 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:55:32,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:55:32,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1551168922, now seen corresponding path program 1 times [2020-09-24 17:55:32,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:55:32,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773286633] [2020-09-24 17:55:32,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:55:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:33,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:33,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:33,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:34,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:38,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:38,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-24 17:55:38,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:55:38,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-24 17:55:38,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:38,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:55:38,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-09-24 17:55:38,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 17:55:38,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:38,341 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 17:55:38,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:55:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:38,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:38,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:38,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 17:55:38,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:38,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-24 17:55:38,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:38,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:38,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:38,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:38,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:55:38,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 17:55:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:38,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:38,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:38,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:55:38,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:38,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:55:38,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:38,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:38,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:38,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:38,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:55:38,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 17:55:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:38,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:38,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:38,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:55:38,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:38,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:55:38,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:38,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:38,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:38,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:38,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:55:38,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 17:55:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:38,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:38,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:38,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:55:38,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:38,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:55:38,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:38,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:38,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:38,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:38,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:38,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 17:55:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:38,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:38,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:38,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:55:38,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:38,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:55:38,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:38,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:38,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:38,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:38,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:55:38,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 17:55:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:38,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:38,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:38,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:55:38,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:38,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:55:38,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:38,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:38,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:38,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:38,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:55:38,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 17:55:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:38,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:38,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:38,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:55:38,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:38,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:55:38,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:38,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:55:38,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:38,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:55:38,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:55:38,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-24 17:55:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:38,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:38,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:38,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:55:38,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:38,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:55:38,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:55:38,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:38,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:55:38,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:55:38,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:55:38,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773286633] [2020-09-24 17:55:38,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:55:38,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 17:55:38,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092948235] [2020-09-24 17:55:38,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:55:38,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:55:38,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:55:38,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:55:38,741 INFO L87 Difference]: Start difference. First operand 380 states and 423 transitions. Second operand 9 states. [2020-09-24 17:55:39,312 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 17:55:40,663 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 17:55:41,022 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 17:55:41,365 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:55:41,712 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 17:55:42,051 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 17:55:42,743 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 17:55:43,094 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 17:55:43,454 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 17:55:44,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:55:44,433 INFO L93 Difference]: Finished difference Result 905 states and 1091 transitions. [2020-09-24 17:55:44,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 17:55:44,434 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-09-24 17:55:44,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:55:44,443 INFO L225 Difference]: With dead ends: 905 [2020-09-24 17:55:44,443 INFO L226 Difference]: Without dead ends: 635 [2020-09-24 17:55:44,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-24 17:55:44,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2020-09-24 17:55:44,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 558. [2020-09-24 17:55:44,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2020-09-24 17:55:44,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 638 transitions. [2020-09-24 17:55:44,558 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 638 transitions. Word has length 161 [2020-09-24 17:55:44,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:55:44,559 INFO L479 AbstractCegarLoop]: Abstraction has 558 states and 638 transitions. [2020-09-24 17:55:44,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 17:55:44,559 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 638 transitions. [2020-09-24 17:55:44,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-24 17:55:44,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:55:44,563 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, 1, 1, 1, 1] [2020-09-24 17:55:44,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:55:44,563 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:55:44,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:55:44,564 INFO L82 PathProgramCache]: Analyzing trace with hash 577972371, now seen corresponding path program 1 times [2020-09-24 17:55:44,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:55:44,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424119852] [2020-09-24 17:55:44,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:55:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:44,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:45,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:49,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:49,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-24 17:55:49,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:55:49,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 17:55:49,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:49,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:55:49,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-09-24 17:55:49,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:55:49,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:49,900 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 17:55:49,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:55:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:49,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:50,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:50,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 17:55:50,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:50,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 17:55:50,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:50,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:50,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:50,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:50,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:50,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 17:55:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:50,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:50,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:50,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:55:50,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:50,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:55:50,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:50,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:50,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:50,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:50,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:55:50,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 17:55:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:50,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:50,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:50,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:55:50,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:50,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:55:50,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:50,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:50,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:50,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:50,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:50,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 17:55:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:50,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:50,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:50,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:55:50,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:50,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:55:50,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:50,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:50,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 17:55:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:50,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:50,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:50,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:55:50,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:50,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:55:50,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:50,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:50,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:50,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:50,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:50,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 17:55:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:50,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:50,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:50,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:55:50,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:50,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:55:50,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:50,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:50,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:50,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:50,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:50,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 17:55:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:50,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:50,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:50,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 17:55:50,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:50,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 17:55:50,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:50,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:55:50,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 17:55:50,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:55:50,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:50,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:55:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:50,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:50,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:50,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 17:55:50,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:50,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 17:55:50,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:50,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:55:50,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 17:55:50,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:55:50,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:50,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:55:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:50,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:50,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:50,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 17:55:50,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:50,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 17:55:50,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:50,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:55:50,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:50,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 17:55:50,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:50,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:55:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:50,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:50,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:50,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:55:50,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:50,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:55:50,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:50,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:50,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:55:50,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:50,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:55:50,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 17:55:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:50,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:50,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:50,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:55:50,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:50,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:55:50,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:50,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:50,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 17:55:50,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:50,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:50,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-24 17:55:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:50,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:50,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:50,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:55:50,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:50,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:55:50,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:50,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:50,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:55:50,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:50,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:50,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-24 17:55:50,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:55:50,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:55:50,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 17:55:50,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:55:50,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:55:50,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:55:50,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 17:55:50,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:55:50,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 17:55:50,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:55:50,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:55:50,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:55:50,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424119852] [2020-09-24 17:55:50,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:55:50,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 17:55:50,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260476483] [2020-09-24 17:55:50,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 17:55:50,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:55:50,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 17:55:50,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:55:50,389 INFO L87 Difference]: Start difference. First operand 558 states and 638 transitions. Second operand 10 states. [2020-09-24 17:55:51,805 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 17:55:52,105 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189