/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:50:37,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:50:37,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:50:37,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:50:37,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:50:37,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:50:37,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:50:37,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:50:37,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:50:37,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:50:37,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:50:37,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:50:37,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:50:37,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:50:37,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:50:37,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:50:37,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:50:37,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:50:37,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:50:37,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:50:37,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:50:37,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:50:37,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:50:37,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:50:37,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:50:37,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:50:37,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:50:37,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:50:37,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:50:37,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:50:37,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:50:37,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:50:37,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:50:37,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:50:37,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:50:37,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:50:37,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:50:37,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:50:37,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:50:37,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:50:37,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:50:37,808 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 01:50:37,836 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:50:37,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:50:37,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:50:37,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:50:37,838 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:50:37,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:50:37,839 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:50:37,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:50:37,839 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:50:37,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:50:37,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:50:37,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:50:37,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:50:37,840 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:50:37,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:50:37,840 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:50:37,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:50:37,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:50:37,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:50:37,841 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:50:37,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:50:37,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:50:37,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:50:37,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:50:37,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:50:37,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:50:37,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:50:37,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:50:37,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:50:37,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-09-25 01:50:38,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:50:38,362 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:50:38,366 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:50:38,368 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:50:38,369 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:50:38,370 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product39.cil.c [2020-09-25 01:50:38,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e81f0073d/dd4397a69f884e488d067faa014d0860/FLAG419507fa3 [2020-09-25 01:50:39,111 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:50:39,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product39.cil.c [2020-09-25 01:50:39,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e81f0073d/dd4397a69f884e488d067faa014d0860/FLAG419507fa3 [2020-09-25 01:50:39,373 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e81f0073d/dd4397a69f884e488d067faa014d0860 [2020-09-25 01:50:39,386 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:50:39,392 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:50:39,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:50:39,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:50:39,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:50:39,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:50:39" (1/1) ... [2020-09-25 01:50:39,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5db1276a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:39, skipping insertion in model container [2020-09-25 01:50:39,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:50:39" (1/1) ... [2020-09-25 01:50:39,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:50:39,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:50:39,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:50:39,877 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:50:40,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:50:40,134 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:50:40,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:40 WrapperNode [2020-09-25 01:50:40,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:50:40,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:50:40,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:50:40,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:50:40,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:40" (1/1) ... [2020-09-25 01:50:40,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:40" (1/1) ... [2020-09-25 01:50:40,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:40" (1/1) ... [2020-09-25 01:50:40,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:40" (1/1) ... [2020-09-25 01:50:40,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:40" (1/1) ... [2020-09-25 01:50:40,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:40" (1/1) ... [2020-09-25 01:50:40,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:40" (1/1) ... [2020-09-25 01:50:40,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:50:40,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:50:40,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:50:40,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:50:40,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:50:40,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:50:40,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:50:40,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 01:50:40,335 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 01:50:40,335 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 01:50:40,335 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 01:50:40,336 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 01:50:40,336 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 01:50:40,337 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 01:50:40,338 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 01:50:40,338 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 01:50:40,338 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 01:50:40,338 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 01:50:40,338 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-25 01:50:40,338 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 01:50:40,340 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 01:50:40,340 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-25 01:50:40,340 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 01:50:40,340 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 01:50:40,341 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 01:50:40,341 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 01:50:40,341 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 01:50:40,341 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 01:50:40,341 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-25 01:50:40,342 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-25 01:50:40,343 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 01:50:40,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 01:50:40,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 01:50:40,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 01:50:40,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 01:50:40,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 01:50:40,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 01:50:40,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 01:50:40,344 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 01:50:40,344 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 01:50:40,344 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 01:50:40,345 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 01:50:40,345 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:50:40,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-25 01:50:40,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:50:40,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:50:40,345 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 01:50:40,346 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 01:50:40,346 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 01:50:40,346 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 01:50:40,346 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 01:50:40,346 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 01:50:40,346 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 01:50:40,346 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 01:50:40,347 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 01:50:40,347 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 01:50:40,347 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 01:50:40,347 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-25 01:50:40,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:50:40,348 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 01:50:40,348 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 01:50:40,348 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 01:50:40,348 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 01:50:40,349 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 01:50:40,349 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-25 01:50:40,349 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-25 01:50:40,349 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 01:50:40,349 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 01:50:40,349 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-25 01:50:40,350 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-25 01:50:40,350 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 01:50:40,350 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 01:50:40,350 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 01:50:40,350 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 01:50:40,350 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 01:50:40,351 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 01:50:40,352 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 01:50:40,353 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 01:50:40,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 01:50:40,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 01:50:40,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:50:40,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 01:50:40,354 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 01:50:40,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:50:40,354 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 01:50:40,354 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 01:50:40,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:50:40,356 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 01:50:40,356 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 01:50:40,356 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 01:50:40,357 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 01:50:40,357 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 01:50:40,357 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 01:50:40,358 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:50:40,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:50:40,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 01:50:40,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:50:41,558 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:50:41,558 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 01:50:41,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:50:41 BoogieIcfgContainer [2020-09-25 01:50:41,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:50:41,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:50:41,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:50:41,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:50:41,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:50:39" (1/3) ... [2020-09-25 01:50:41,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7047b7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:50:41, skipping insertion in model container [2020-09-25 01:50:41,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:40" (2/3) ... [2020-09-25 01:50:41,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7047b7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:50:41, skipping insertion in model container [2020-09-25 01:50:41,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:50:41" (3/3) ... [2020-09-25 01:50:41,576 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product39.cil.c [2020-09-25 01:50:41,589 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:50:41,602 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:50:41,625 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:50:41,660 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:50:41,660 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:50:41,661 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:50:41,661 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:50:41,661 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:50:41,661 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:50:41,661 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:50:41,661 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:50:41,692 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states. [2020-09-25 01:50:41,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 01:50:41,711 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:50:41,713 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] [2020-09-25 01:50:41,714 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:50:41,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:50:41,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1883472631, now seen corresponding path program 1 times [2020-09-25 01:50:41,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:50:41,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291666602] [2020-09-25 01:50:41,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:50:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:42,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:42,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:44,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:47,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:47,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 01:50:47,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:50:47,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 01:50:47,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:47,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:47,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 01:50:47,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:47,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:50:47,572 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:50:47,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:50:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:47,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:47,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:47,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:50:47,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:47,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 01:50:47,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:47,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:47,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:47,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:47,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:47,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:50:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:47,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:47,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:47,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:47,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:47,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:47,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:47,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:47,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:47,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:47,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:47,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:50:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:47,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:47,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:47,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:47,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:47,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:47,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:47,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:47,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:47,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:47,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:47,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:50:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:47,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:47,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:47,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:47,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:47,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:50:47,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:47,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:47,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:47,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:47,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:47,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:50:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:47,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:47,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:47,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:47,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:47,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:47,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:47,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:47,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:47,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:47,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:47,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 01:50:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:47,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:47,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:47,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:47,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:47,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:47,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:47,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:47,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:47,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:47,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:47,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 01:50:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:47,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:47,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:47,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:47,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:47,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:50:47,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:47,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:47,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:47,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:47,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:47,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-25 01:50:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:47,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:47,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:47,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:47,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:47,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:47,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:47,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:47,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:47,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:47,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:47,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:50:47,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291666602] [2020-09-25 01:50:47,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:50:47,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 01:50:47,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207951881] [2020-09-25 01:50:47,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 01:50:47,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:50:47,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 01:50:47,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:50:47,944 INFO L87 Difference]: Start difference. First operand 318 states. Second operand 3 states. [2020-09-25 01:50:49,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:50:49,495 INFO L93 Difference]: Finished difference Result 503 states and 601 transitions. [2020-09-25 01:50:49,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 01:50:49,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-25 01:50:49,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:50:49,520 INFO L225 Difference]: With dead ends: 503 [2020-09-25 01:50:49,520 INFO L226 Difference]: Without dead ends: 310 [2020-09-25 01:50:49,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:50:49,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-09-25 01:50:49,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 267. [2020-09-25 01:50:49,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-09-25 01:50:49,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 292 transitions. [2020-09-25 01:50:49,649 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 292 transitions. Word has length 153 [2020-09-25 01:50:49,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:50:49,650 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 292 transitions. [2020-09-25 01:50:49,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 01:50:49,651 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 292 transitions. [2020-09-25 01:50:49,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 01:50:49,659 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:50:49,659 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] [2020-09-25 01:50:49,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:50:49,660 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:50:49,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:50:49,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1086228284, now seen corresponding path program 1 times [2020-09-25 01:50:49,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:50:49,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567190741] [2020-09-25 01:50:49,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:50:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:49,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:49,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:51,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:54,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:54,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 01:50:54,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:50:54,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 01:50:54,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:54,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:54,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 01:50:54,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 01:50:54,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:55,077 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:50:55,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:50:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:55,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:55,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:55,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:50:55,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:55,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 01:50:55,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:55,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:55,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:55,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:55,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:55,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:50:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:55,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:55,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:55,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:55,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:55,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:55,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:55,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:55,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:55,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:55,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:55,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:50:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:55,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:55,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:55,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:55,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:55,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:55,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:55,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:55,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:55,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:55,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:55,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:50:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:55,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:55,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:55,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:55,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:55,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:50:55,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:55,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:55,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:55,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:55,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:55,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:50:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:55,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:55,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:55,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:55,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:55,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:55,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:55,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:55,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:55,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:55,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:55,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-25 01:50:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:55,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:55,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:55,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:55,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:55,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:55,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:55,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:55,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:55,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:55,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-25 01:50:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:55,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:55,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:55,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:55,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:55,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:55,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:55,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:55,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:55,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:55,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:55,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-25 01:50:55,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:55,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:55,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:55,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:55,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:55,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:55,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:55,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:55,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:55,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:55,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:50:55,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567190741] [2020-09-25 01:50:55,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:50:55,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:50:55,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043429282] [2020-09-25 01:50:55,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:50:55,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:50:55,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:50:55,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:50:55,322 INFO L87 Difference]: Start difference. First operand 267 states and 292 transitions. Second operand 4 states. [2020-09-25 01:50:55,953 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:50:57,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:50:57,025 INFO L93 Difference]: Finished difference Result 414 states and 468 transitions. [2020-09-25 01:50:57,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:50:57,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-25 01:50:57,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:50:57,033 INFO L225 Difference]: With dead ends: 414 [2020-09-25 01:50:57,033 INFO L226 Difference]: Without dead ends: 293 [2020-09-25 01:50:57,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:50:57,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-09-25 01:50:57,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 257. [2020-09-25 01:50:57,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-09-25 01:50:57,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 279 transitions. [2020-09-25 01:50:57,084 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 279 transitions. Word has length 154 [2020-09-25 01:50:57,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:50:57,084 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 279 transitions. [2020-09-25 01:50:57,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:50:57,085 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 279 transitions. [2020-09-25 01:50:57,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 01:50:57,087 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:50:57,088 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] [2020-09-25 01:50:57,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:50:57,088 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:50:57,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:50:57,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1753608415, now seen corresponding path program 1 times [2020-09-25 01:50:57,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:50:57,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842187076] [2020-09-25 01:50:57,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:50:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:57,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:57,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:51:00,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:51:00,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 01:51:00,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:51:00,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3709 [2020-09-25 01:51:00,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:51:00,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 01:51:00,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 01:51:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 01:51:00,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:51:01,195 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:51:01,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:51:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:51:01,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:51:01,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:51:01,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:51:01,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:51:01,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 01:51:01,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:51:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:51:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:51:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 01:51:01,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:51:01,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:51:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:51:01,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:51:01,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:51:01,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:51:01,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:51:01,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:51:01,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:51:01,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:51:01,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:51:01,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:51:01,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:51:01,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:51:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:51:01,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:51:01,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:51:01,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:51:01,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:51:01,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:51:01,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:51:01,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:51:01,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:51:01,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:51:01,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:51:01,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:51:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:51:01,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:51:01,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:51:01,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:51:01,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:51:01,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:51:01,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:51:01,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:51:01,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:51:01,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:51:01,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:51:01,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:51:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:51:01,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:51:01,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:51:01,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:51:01,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:51:01,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:51:01,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:51:01,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:51:01,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:51:01,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:51:01,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:51:01,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 01:51:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:51:01,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:51:01,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:51:01,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:51:01,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:51:01,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:51:01,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:51:01,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:51:01,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:51:01,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:51:01,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:51:01,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-25 01:51:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:51:01,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:51:01,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:51:01,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:51:01,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:51:01,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:51:01,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:51:01,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:51:01,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:51:01,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:51:01,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:51:01,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-25 01:51:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:51:01,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:51:01,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:51:01,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:51:01,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:51:01,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:51:01,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:51:01,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:51:01,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:51:01,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:51:01,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:51:01,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:51:01,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842187076] [2020-09-25 01:51:01,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:51:01,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:51:01,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133224461] [2020-09-25 01:51:01,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:51:01,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:51:01,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:51:01,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:51:01,598 INFO L87 Difference]: Start difference. First operand 257 states and 279 transitions. Second operand 4 states. [2020-09-25 01:51:02,078 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:51:03,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:51:03,927 INFO L93 Difference]: Finished difference Result 599 states and 688 transitions. [2020-09-25 01:51:03,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:51:03,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-09-25 01:51:03,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:51:03,937 INFO L225 Difference]: With dead ends: 599 [2020-09-25 01:51:03,937 INFO L226 Difference]: Without dead ends: 452 [2020-09-25 01:51:03,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:51:03,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-09-25 01:51:04,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 398. [2020-09-25 01:51:04,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-09-25 01:51:04,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 443 transitions. [2020-09-25 01:51:04,023 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 443 transitions. Word has length 163 [2020-09-25 01:51:04,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:51:04,024 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 443 transitions. [2020-09-25 01:51:04,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:51:04,024 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 443 transitions. [2020-09-25 01:51:04,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 01:51:04,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:51:04,027 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] [2020-09-25 01:51:04,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:51:04,028 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:51:04,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:51:04,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1156257497, now seen corresponding path program 1 times [2020-09-25 01:51:04,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:51:04,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874855154] [2020-09-25 01:51:04,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:51:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:51:04,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:51:05,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:51:05,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 01:51:05,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:51:05,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1643 [2020-09-25 01:51:05,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:51:05,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 01:51:05,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-25 01:51:05,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 01:51:05,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:51:06,221 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:51:06,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:51:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:51:06,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:51:06,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:51:06,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:51:06,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:51:06,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-09-25 01:51:06,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:51:06,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:51:06,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:51:06,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 01:51:06,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:51:06,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:51:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:51:06,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:51:06,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:51:06,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:51:06,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:51:06,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:51:06,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:51:06,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:51:06,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:51:06,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:51:06,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:51:06,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:51:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:51:06,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:51:06,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:51:06,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:51:06,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:51:06,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:51:06,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:51:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:51:06,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:51:06,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:51:06,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:51:06,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:51:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:51:06,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:51:06,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:51:06,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:51:06,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:51:06,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:51:06,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:51:06,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:51:06,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:51:06,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:51:06,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:51:06,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:51:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:51:06,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:51:06,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:51:06,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:51:06,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:51:06,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:51:06,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:51:06,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:51:06,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:51:06,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:51:06,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:51:06,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-25 01:51:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:51:06,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:51:06,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:51:06,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:51:06,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:51:06,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:51:06,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:51:06,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:51:06,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:51:06,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:51:06,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:51:06,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-25 01:51:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:51:06,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:51:06,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:51:06,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:51:06,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:51:06,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:51:06,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:51:06,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:51:06,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:51:06,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:51:06,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:51:06,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-25 01:51:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:51:06,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:51:06,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:51:06,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:51:06,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:51:06,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 01:51:06,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:51:06,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:51:06,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:51:06,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:51:06,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:51:06,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-25 01:51:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:51:06,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:51:06,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:51:06,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:51:06,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:51:06,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:51:06,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:51:06,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:51:06,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:51:06,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:51:06,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:51:06,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:51:06,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874855154] [2020-09-25 01:51:06,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:51:06,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 01:51:06,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104191874] [2020-09-25 01:51:06,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 01:51:06,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:51:06,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 01:51:06,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 01:51:06,768 INFO L87 Difference]: Start difference. First operand 398 states and 443 transitions. Second operand 10 states. [2020-09-25 01:51:07,351 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:51:09,543 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:51:10,212 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-09-25 01:51:10,579 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:51:10,938 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:51:11,305 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 01:51:11,621 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:51:11,931 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:51:12,454 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:51:13,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:51:13,522 INFO L93 Difference]: Finished difference Result 1069 states and 1326 transitions. [2020-09-25 01:51:13,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 01:51:13,526 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2020-09-25 01:51:13,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:51:13,533 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 01:51:13,534 INFO L226 Difference]: Without dead ends: 781 [2020-09-25 01:51:13,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-09-25 01:51:13,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-09-25 01:51:13,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 657. [2020-09-25 01:51:13,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2020-09-25 01:51:13,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 756 transitions. [2020-09-25 01:51:13,662 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 756 transitions. Word has length 172 [2020-09-25 01:51:13,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:51:13,662 INFO L479 AbstractCegarLoop]: Abstraction has 657 states and 756 transitions. [2020-09-25 01:51:13,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 01:51:13,663 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 756 transitions. [2020-09-25 01:51:13,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 01:51:13,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:51:13,667 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] [2020-09-25 01:51:13,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:51:13,668 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:51:13,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:51:13,668 INFO L82 PathProgramCache]: Analyzing trace with hash 82436204, now seen corresponding path program 1 times [2020-09-25 01:51:13,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:51:13,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433409451] [2020-09-25 01:51:13,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:51:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 01:51:13,737 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 01:51:13,737 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 01:51:13,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:51:13,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:51:13 BoogieIcfgContainer [2020-09-25 01:51:13,779 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 01:51:13,782 INFO L168 Benchmark]: Toolchain (without parser) took 34394.42 ms. Allocated memory was 147.8 MB in the beginning and 663.2 MB in the end (delta: 515.4 MB). Free memory was 102.2 MB in the beginning and 573.8 MB in the end (delta: -471.6 MB). Peak memory consumption was 43.7 MB. Max. memory is 7.1 GB. [2020-09-25 01:51:13,784 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 147.8 MB. Free memory was 121.3 MB in the beginning and 121.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 01:51:13,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 742.27 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 101.6 MB in the beginning and 174.2 MB in the end (delta: -72.7 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-09-25 01:51:13,793 INFO L168 Benchmark]: Boogie Preprocessor took 97.33 ms. Allocated memory is still 204.5 MB. Free memory was 174.2 MB in the beginning and 169.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-09-25 01:51:13,794 INFO L168 Benchmark]: RCFGBuilder took 1333.29 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 169.6 MB in the beginning and 176.0 MB in the end (delta: -6.4 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2020-09-25 01:51:13,795 INFO L168 Benchmark]: TraceAbstraction took 32211.73 ms. Allocated memory was 236.5 MB in the beginning and 663.2 MB in the end (delta: 426.8 MB). Free memory was 176.0 MB in the beginning and 573.8 MB in the end (delta: -397.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. [2020-09-25 01:51:13,806 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 147.8 MB. Free memory was 121.3 MB in the beginning and 121.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 742.27 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 101.6 MB in the beginning and 174.2 MB in the end (delta: -72.7 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.33 ms. Allocated memory is still 204.5 MB. Free memory was 174.2 MB in the beginning and 169.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1333.29 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 169.6 MB in the beginning and 176.0 MB in the end (delta: -6.4 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 32211.73 ms. Allocated memory was 236.5 MB in the beginning and 663.2 MB in the end (delta: 426.8 MB). Free memory was 176.0 MB in the beginning and 573.8 MB in the end (delta: -397.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 451]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L85] int waterLevel = 1; [L86] int methaneLevelCritical = 0; [L185] int pumpRunning = 0; [L186] int systemActive = 1; [L625] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L822] int cleanupTimeShifts = 4; [L895] int retValue_acc ; [L896] int tmp ; [L900] FCALL select_helpers() [L901] FCALL select_features() [L902] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L902] RET, EXPR valid_product() [L902] tmp = valid_product() [L904] COND TRUE \read(tmp) [L906] FCALL setup() [L907] CALL runTest() [L889] CALL test() [L381] int splverifierCounter ; [L382] int tmp ; [L383] int tmp___0 ; [L384] int tmp___1 ; [L385] int tmp___2 ; [L388] splverifierCounter = 0 [L390] COND TRUE 1 [L392] COND TRUE splverifierCounter < 4 [L398] tmp = __VERIFIER_nondet_int() [L400] COND TRUE \read(tmp) [L402] CALL waterRise() [L103] COND TRUE waterLevel < 2 [L104] waterLevel = waterLevel + 1 [L402] RET waterRise() [L408] tmp___0 = __VERIFIER_nondet_int() [L410] COND FALSE !(\read(tmp___0)) [L418] tmp___2 = __VERIFIER_nondet_int() [L420] COND FALSE !(\read(tmp___2)) [L424] tmp___1 = __VERIFIER_nondet_int() [L426] COND TRUE \read(tmp___1) [L428] CALL stopSystem() [L367] COND FALSE !(\read(pumpRunning)) [L374] systemActive = 0 [L428] RET stopSystem() [L435] CALL timeShift() [L193] COND FALSE !(\read(pumpRunning)) [L200] COND FALSE !(\read(systemActive)) [L208] CALL __utac_acc__Specification3_spec__1() [L919] int tmp ; [L920] int tmp___0 ; [L921] int tmp___1 ; [L925] CALL, EXPR isMethaneLevelCritical() [L124] int retValue_acc ; [L127] retValue_acc = methaneLevelCritical [L128] return (retValue_acc); [L925] RET, EXPR isMethaneLevelCritical() [L925] tmp = isMethaneLevelCritical() [L927] COND FALSE !(\read(tmp)) [L931] CALL, EXPR getWaterLevel() [L156] int retValue_acc ; [L159] retValue_acc = waterLevel [L160] return (retValue_acc); [L931] RET, EXPR getWaterLevel() [L931] tmp___0 = getWaterLevel() [L933] COND TRUE tmp___0 == 2 [L935] CALL, EXPR isPumpRunning() [L300] int retValue_acc ; [L303] retValue_acc = pumpRunning [L304] return (retValue_acc); [L935] RET, EXPR isPumpRunning() [L935] tmp___1 = isPumpRunning() [L937] COND FALSE !(\read(tmp___1)) [L941] CALL __automaton_fail() [L451] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 630 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 32.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 12.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1032 SDtfs, 1300 SDslu, 827 SDs, 0 SdLazy, 2275 SolverSat, 456 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=657occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 257 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 18.2s InterpolantComputationTime, 819 NumberOfCodeBlocks, 819 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 638 ConstructedInterpolants, 0 QuantifiedInterpolants, 266695 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...