/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:54:26,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:54:26,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:54:26,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:54:26,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:54:26,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:54:26,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:54:26,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:54:26,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:54:26,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:54:26,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:54:26,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:54:26,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:54:26,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:54:26,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:54:26,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:54:26,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:54:26,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:54:26,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:54:26,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:54:26,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:54:26,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:54:26,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:54:26,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:54:26,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:54:26,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:54:26,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:54:26,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:54:26,864 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:54:26,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:54:26,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:54:26,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:54:26,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:54:26,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:54:26,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:54:26,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:54:26,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:54:26,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:54:26,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:54:26,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:54:26,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:54:26,872 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 [2020-08-21 17:54:26,894 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:54:26,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:54:26,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:54:26,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:54:26,896 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:54:26,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:54:26,896 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:54:26,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:54:26,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:54:26,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:54:26,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:54:26,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:54:26,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:54:26,898 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:54:26,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:54:26,898 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:54:26,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:54:26,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:54:26,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:54:26,899 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:54:26,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:54:26,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:54:26,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:54:26,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:54:26,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:54:26,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:54:26,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:54:26,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:54:26,901 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:54:26,901 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 17:54:27,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:54:27,210 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:54:27,213 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:54:27,214 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:54:27,215 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:54:27,216 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product41.cil.c [2020-08-21 17:54:27,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2a4745c19/87907a9104af4d6cb231aad5a8257027/FLAGd0062d2e2 [2020-08-21 17:54:27,835 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:54:27,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product41.cil.c [2020-08-21 17:54:27,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2a4745c19/87907a9104af4d6cb231aad5a8257027/FLAGd0062d2e2 [2020-08-21 17:54:28,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2a4745c19/87907a9104af4d6cb231aad5a8257027 [2020-08-21 17:54:28,104 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:54:28,106 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:54:28,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:54:28,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:54:28,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:54:28,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:54:28" (1/1) ... [2020-08-21 17:54:28,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45441dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:28, skipping insertion in model container [2020-08-21 17:54:28,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:54:28" (1/1) ... [2020-08-21 17:54:28,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:54:28,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:54:28,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:54:28,595 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:54:28,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:54:28,757 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:54:28,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:28 WrapperNode [2020-08-21 17:54:28,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:54:28,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:54:28,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:54:28,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:54:28,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:28" (1/1) ... [2020-08-21 17:54:28,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:28" (1/1) ... [2020-08-21 17:54:28,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:28" (1/1) ... [2020-08-21 17:54:28,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:28" (1/1) ... [2020-08-21 17:54:28,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:28" (1/1) ... [2020-08-21 17:54:28,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:28" (1/1) ... [2020-08-21 17:54:28,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:28" (1/1) ... [2020-08-21 17:54:28,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:54:28,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:54:28,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:54:28,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:54:28,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:28" (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 [2020-08-21 17:54:28,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:54:28,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:54:28,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 17:54:28,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 17:54:28,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 17:54:28,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 17:54:28,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 17:54:28,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 17:54:28,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 17:54:28,921 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 17:54:28,922 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 17:54:28,922 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 17:54:28,922 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 17:54:28,922 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 17:54:28,922 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 17:54:28,922 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 17:54:28,923 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 17:54:28,923 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 17:54:28,923 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 17:54:28,923 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 17:54:28,923 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 17:54:28,923 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 17:54:28,923 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 17:54:28,924 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 17:54:28,924 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 17:54:28,924 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 17:54:28,924 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 17:54:28,924 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 17:54:28,925 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 17:54:28,925 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 17:54:28,925 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 17:54:28,925 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:54:28,925 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 17:54:28,926 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 17:54:28,926 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 17:54:28,926 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 17:54:28,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 17:54:28,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 17:54:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:54:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:54:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 17:54:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 17:54:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 17:54:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 17:54:28,928 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 17:54:28,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 17:54:28,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 17:54:28,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:54:28,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 17:54:28,928 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 17:54:28,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:54:28,929 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 17:54:28,929 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 17:54:28,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:54:28,929 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 17:54:28,929 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 17:54:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:54:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 17:54:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 17:54:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 17:54:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 17:54:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 17:54:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 17:54:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 17:54:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 17:54:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 17:54:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 17:54:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 17:54:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 17:54:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 17:54:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 17:54:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 17:54:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 17:54:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 17:54:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 17:54:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 17:54:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 17:54:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 17:54:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 17:54:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 17:54:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 17:54:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 17:54:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 17:54:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 17:54:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:54:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 17:54:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 17:54:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:54:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 17:54:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:54:30,011 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:54:30,011 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 17:54:30,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:54:30 BoogieIcfgContainer [2020-08-21 17:54:30,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:54:30,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:54:30,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:54:30,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:54:30,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:54:28" (1/3) ... [2020-08-21 17:54:30,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750ab829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:54:30, skipping insertion in model container [2020-08-21 17:54:30,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:28" (2/3) ... [2020-08-21 17:54:30,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750ab829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:54:30, skipping insertion in model container [2020-08-21 17:54:30,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:54:30" (3/3) ... [2020-08-21 17:54:30,025 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product41.cil.c [2020-08-21 17:54:30,034 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:54:30,042 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:54:30,054 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:54:30,075 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:54:30,075 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:54:30,075 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:54:30,076 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:54:30,076 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:54:30,076 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:54:30,076 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:54:30,076 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:54:30,100 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-08-21 17:54:30,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 17:54:30,110 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:30,111 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] [2020-08-21 17:54:30,112 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:30,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:30,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1904787813, now seen corresponding path program 1 times [2020-08-21 17:54:30,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:30,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936647151] [2020-08-21 17:54:30,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:30,815 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:30,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:30,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:30,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:30,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:30,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:30,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:54:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:30,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:54:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:30,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:54:30,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936647151] [2020-08-21 17:54:30,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:30,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 17:54:30,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780966455] [2020-08-21 17:54:30,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 17:54:30,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:30,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 17:54:30,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:54:30,927 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 3 states. [2020-08-21 17:54:32,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:32,220 INFO L93 Difference]: Finished difference Result 275 states and 361 transitions. [2020-08-21 17:54:32,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 17:54:32,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 17:54:32,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:32,244 INFO L225 Difference]: With dead ends: 275 [2020-08-21 17:54:32,244 INFO L226 Difference]: Without dead ends: 149 [2020-08-21 17:54:32,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:54:32,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-21 17:54:32,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 117. [2020-08-21 17:54:32,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-21 17:54:32,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 137 transitions. [2020-08-21 17:54:32,404 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 137 transitions. Word has length 46 [2020-08-21 17:54:32,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:32,406 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 137 transitions. [2020-08-21 17:54:32,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 17:54:32,407 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 137 transitions. [2020-08-21 17:54:32,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 17:54:32,412 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:32,412 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] [2020-08-21 17:54:32,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:54:32,413 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:32,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:32,414 INFO L82 PathProgramCache]: Analyzing trace with hash -8679295, now seen corresponding path program 1 times [2020-08-21 17:54:32,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:32,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526064266] [2020-08-21 17:54:32,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:32,749 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:32,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:32,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:32,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:32,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:32,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:32,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:32,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 17:54:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:32,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 17:54:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:32,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:54:32,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526064266] [2020-08-21 17:54:32,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:32,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:54:32,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38986610] [2020-08-21 17:54:32,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:54:32,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:32,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:54:32,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:54:32,797 INFO L87 Difference]: Start difference. First operand 117 states and 137 transitions. Second operand 4 states. [2020-08-21 17:54:33,253 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:33,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:33,928 INFO L93 Difference]: Finished difference Result 208 states and 252 transitions. [2020-08-21 17:54:33,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 17:54:33,930 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 17:54:33,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:33,932 INFO L225 Difference]: With dead ends: 208 [2020-08-21 17:54:33,932 INFO L226 Difference]: Without dead ends: 133 [2020-08-21 17:54:33,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:54:33,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-08-21 17:54:33,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 108. [2020-08-21 17:54:33,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-08-21 17:54:33,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 125 transitions. [2020-08-21 17:54:33,972 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 125 transitions. Word has length 47 [2020-08-21 17:54:33,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:33,972 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 125 transitions. [2020-08-21 17:54:33,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:54:33,973 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 125 transitions. [2020-08-21 17:54:33,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 17:54:33,974 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:33,975 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] [2020-08-21 17:54:33,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:54:33,975 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:33,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:33,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1364944070, now seen corresponding path program 1 times [2020-08-21 17:54:33,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:33,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825104818] [2020-08-21 17:54:33,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:34,293 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:34,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:34,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:34,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:34,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:34,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:34,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:54:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:34,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:54:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:34,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:54:34,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825104818] [2020-08-21 17:54:34,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:34,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:54:34,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234285106] [2020-08-21 17:54:34,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:54:34,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:34,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:54:34,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:54:34,414 INFO L87 Difference]: Start difference. First operand 108 states and 125 transitions. Second operand 8 states. [2020-08-21 17:54:34,755 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:54:35,065 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:35,311 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:35,555 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:36,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:36,531 INFO L93 Difference]: Finished difference Result 217 states and 266 transitions. [2020-08-21 17:54:36,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 17:54:36,532 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 17:54:36,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:36,536 INFO L225 Difference]: With dead ends: 217 [2020-08-21 17:54:36,536 INFO L226 Difference]: Without dead ends: 133 [2020-08-21 17:54:36,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:54:36,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-08-21 17:54:36,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 108. [2020-08-21 17:54:36,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-08-21 17:54:36,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2020-08-21 17:54:36,569 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 51 [2020-08-21 17:54:36,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:36,569 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2020-08-21 17:54:36,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:54:36,570 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2020-08-21 17:54:36,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 17:54:36,572 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:36,572 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] [2020-08-21 17:54:36,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:54:36,572 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:36,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:36,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1317252167, now seen corresponding path program 1 times [2020-08-21 17:54:36,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:36,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990246010] [2020-08-21 17:54:36,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:36,885 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:36,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:36,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:36,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:36,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:36,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:36,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 17:54:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:36,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:54:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:36,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 17:54:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:36,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 17:54:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:36,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:54:36,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990246010] [2020-08-21 17:54:36,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:36,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 17:54:36,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479222206] [2020-08-21 17:54:36,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 17:54:36,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:36,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 17:54:36,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:54:36,983 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand 6 states. [2020-08-21 17:54:37,291 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:54:38,398 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:38,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:38,903 INFO L93 Difference]: Finished difference Result 300 states and 370 transitions. [2020-08-21 17:54:38,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 17:54:38,904 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-21 17:54:38,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:38,907 INFO L225 Difference]: With dead ends: 300 [2020-08-21 17:54:38,908 INFO L226 Difference]: Without dead ends: 216 [2020-08-21 17:54:38,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:54:38,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-21 17:54:38,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 175. [2020-08-21 17:54:38,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-08-21 17:54:38,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 201 transitions. [2020-08-21 17:54:38,952 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 201 transitions. Word has length 59 [2020-08-21 17:54:38,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:38,952 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 201 transitions. [2020-08-21 17:54:38,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 17:54:38,952 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 201 transitions. [2020-08-21 17:54:38,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-21 17:54:38,954 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:38,954 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] [2020-08-21 17:54:38,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:54:38,955 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:38,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:38,955 INFO L82 PathProgramCache]: Analyzing trace with hash 19293366, now seen corresponding path program 1 times [2020-08-21 17:54:38,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:38,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966678208] [2020-08-21 17:54:38,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:39,264 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:39,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:39,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:39,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:39,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:39,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:39,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 17:54:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:39,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:54:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:39,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:54:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:39,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:54:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:39,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 17:54:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:39,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 17:54:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:39,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:54:39,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966678208] [2020-08-21 17:54:39,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:39,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:54:39,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141508207] [2020-08-21 17:54:39,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:54:39,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:39,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:54:39,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:54:39,361 INFO L87 Difference]: Start difference. First operand 175 states and 201 transitions. Second operand 8 states. [2020-08-21 17:54:39,694 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:54:40,598 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:40,898 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:54:41,381 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:41,611 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:41,906 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:42,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:42,572 INFO L93 Difference]: Finished difference Result 520 states and 648 transitions. [2020-08-21 17:54:42,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 17:54:42,573 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2020-08-21 17:54:42,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:42,577 INFO L225 Difference]: With dead ends: 520 [2020-08-21 17:54:42,578 INFO L226 Difference]: Without dead ends: 369 [2020-08-21 17:54:42,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 17:54:42,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-08-21 17:54:42,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 305. [2020-08-21 17:54:42,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-08-21 17:54:42,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 352 transitions. [2020-08-21 17:54:42,650 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 352 transitions. Word has length 73 [2020-08-21 17:54:42,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:42,650 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 352 transitions. [2020-08-21 17:54:42,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:54:42,650 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 352 transitions. [2020-08-21 17:54:42,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-21 17:54:42,652 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:42,653 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] [2020-08-21 17:54:42,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:54:42,653 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:42,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:42,654 INFO L82 PathProgramCache]: Analyzing trace with hash -989642822, now seen corresponding path program 1 times [2020-08-21 17:54:42,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:42,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379905956] [2020-08-21 17:54:42,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:42,964 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:42,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:42,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:42,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:42,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:42,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:43,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:54:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:43,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 17:54:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:43,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:54:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:43,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:54:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:43,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:54:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:43,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-21 17:54:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:43,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 17:54:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:43,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:54:43,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379905956] [2020-08-21 17:54:43,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:43,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:54:43,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596895621] [2020-08-21 17:54:43,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:54:43,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:43,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:54:43,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:54:43,069 INFO L87 Difference]: Start difference. First operand 305 states and 352 transitions. Second operand 9 states. [2020-08-21 17:54:43,447 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:54:44,457 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:54:44,709 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:45,438 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:45,694 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:45,949 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:46,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:46,104 INFO L93 Difference]: Finished difference Result 408 states and 516 transitions. [2020-08-21 17:54:46,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 17:54:46,107 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-08-21 17:54:46,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:46,112 INFO L225 Difference]: With dead ends: 408 [2020-08-21 17:54:46,113 INFO L226 Difference]: Without dead ends: 405 [2020-08-21 17:54:46,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 17:54:46,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-08-21 17:54:46,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 305. [2020-08-21 17:54:46,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-08-21 17:54:46,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 351 transitions. [2020-08-21 17:54:46,180 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 351 transitions. Word has length 77 [2020-08-21 17:54:46,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:46,180 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 351 transitions. [2020-08-21 17:54:46,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:54:46,181 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 351 transitions. [2020-08-21 17:54:46,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 17:54:46,183 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:46,183 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:54:46,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 17:54:46,184 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:46,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:46,184 INFO L82 PathProgramCache]: Analyzing trace with hash 636453553, now seen corresponding path program 1 times [2020-08-21 17:54:46,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:46,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522451754] [2020-08-21 17:54:46,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,449 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:46,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:54:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 17:54:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:54:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:54:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:54:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:54:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:54:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 17:54:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 17:54:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:46,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 17:54:46,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522451754] [2020-08-21 17:54:46,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:46,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:54:46,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689575465] [2020-08-21 17:54:46,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:54:46,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:46,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:54:46,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:54:46,581 INFO L87 Difference]: Start difference. First operand 305 states and 351 transitions. Second operand 9 states. [2020-08-21 17:54:47,366 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:47,601 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:54:47,865 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:48,098 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:48,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:48,953 INFO L93 Difference]: Finished difference Result 694 states and 873 transitions. [2020-08-21 17:54:48,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 17:54:48,954 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-21 17:54:48,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:48,957 INFO L225 Difference]: With dead ends: 694 [2020-08-21 17:54:48,957 INFO L226 Difference]: Without dead ends: 413 [2020-08-21 17:54:48,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 17:54:48,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-08-21 17:54:49,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 315. [2020-08-21 17:54:49,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-08-21 17:54:49,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 361 transitions. [2020-08-21 17:54:49,037 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 361 transitions. Word has length 93 [2020-08-21 17:54:49,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:49,037 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 361 transitions. [2020-08-21 17:54:49,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:54:49,037 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 361 transitions. [2020-08-21 17:54:49,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 17:54:49,040 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:49,040 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:54:49,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 17:54:49,040 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:49,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:49,041 INFO L82 PathProgramCache]: Analyzing trace with hash -260939725, now seen corresponding path program 1 times [2020-08-21 17:54:49,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:49,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215357883] [2020-08-21 17:54:49,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:49,365 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:49,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:49,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:49,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:49,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:49,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:49,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:54:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:49,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 17:54:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:49,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:54:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:49,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:54:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:49,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:54:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:49,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:54:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:49,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:54:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:49,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:49,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 17:54:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:49,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 17:54:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:49,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 17:54:49,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215357883] [2020-08-21 17:54:49,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:49,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 17:54:49,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614539222] [2020-08-21 17:54:49,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 17:54:49,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:49,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 17:54:49,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 17:54:49,597 INFO L87 Difference]: Start difference. First operand 315 states and 361 transitions. Second operand 11 states. [2020-08-21 17:54:50,592 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:50,864 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:51,103 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:51,640 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:51,886 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:52,114 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:53,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:53,093 INFO L93 Difference]: Finished difference Result 714 states and 895 transitions. [2020-08-21 17:54:53,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 17:54:53,095 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-21 17:54:53,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:53,099 INFO L225 Difference]: With dead ends: 714 [2020-08-21 17:54:53,099 INFO L226 Difference]: Without dead ends: 423 [2020-08-21 17:54:53,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 17:54:53,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-08-21 17:54:53,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 323. [2020-08-21 17:54:53,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-08-21 17:54:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 369 transitions. [2020-08-21 17:54:53,170 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 369 transitions. Word has length 93 [2020-08-21 17:54:53,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:53,171 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 369 transitions. [2020-08-21 17:54:53,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 17:54:53,171 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 369 transitions. [2020-08-21 17:54:53,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 17:54:53,174 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:53,174 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:54:53,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 17:54:53,174 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:53,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:53,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1709999732, now seen corresponding path program 1 times [2020-08-21 17:54:53,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:53,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359716899] [2020-08-21 17:54:53,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:53,450 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:53,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:53,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:53,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:53,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:53,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:53,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:54:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:53,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 17:54:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:53,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:54:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:53,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:54:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:53,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:54:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:53,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:54:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:53,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:54:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:53,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:53,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 17:54:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:53,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 17:54:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:53,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 17:54:53,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359716899] [2020-08-21 17:54:53,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:53,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 17:54:53,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114485386] [2020-08-21 17:54:53,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 17:54:53,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:53,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 17:54:53,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:54:53,582 INFO L87 Difference]: Start difference. First operand 323 states and 369 transitions. Second operand 7 states. [2020-08-21 17:54:53,904 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:54:54,391 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:54:55,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:55,843 INFO L93 Difference]: Finished difference Result 997 states and 1285 transitions. [2020-08-21 17:54:55,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 17:54:55,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-08-21 17:54:55,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:55,850 INFO L225 Difference]: With dead ends: 997 [2020-08-21 17:54:55,851 INFO L226 Difference]: Without dead ends: 698 [2020-08-21 17:54:55,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 17:54:55,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-08-21 17:54:55,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 599. [2020-08-21 17:54:55,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2020-08-21 17:54:55,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 711 transitions. [2020-08-21 17:54:55,978 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 711 transitions. Word has length 93 [2020-08-21 17:54:55,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:55,979 INFO L479 AbstractCegarLoop]: Abstraction has 599 states and 711 transitions. [2020-08-21 17:54:55,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 17:54:55,979 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 711 transitions. [2020-08-21 17:54:55,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 17:54:55,985 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:55,985 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:54:55,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 17:54:55,986 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:55,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:55,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1136093798, now seen corresponding path program 1 times [2020-08-21 17:54:55,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:55,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736422951] [2020-08-21 17:54:55,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:56,325 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:56,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:56,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:56,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:56,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:56,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:56,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 17:54:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:56,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 17:54:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:56,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:54:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:56,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:54:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:56,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:54:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:56,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:54:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:56,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:54:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:56,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:54:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:56,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:56,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 17:54:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:56,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 17:54:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:56,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 17:54:56,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736422951] [2020-08-21 17:54:56,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:54:56,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 17:54:56,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969592008] [2020-08-21 17:54:56,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 17:54:56,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:56,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 17:54:56,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-21 17:54:56,751 INFO L87 Difference]: Start difference. First operand 599 states and 711 transitions. Second operand 17 states. [2020-08-21 17:54:57,853 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:54:58,150 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:54:58,404 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:54:58,657 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:54:59,286 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:55:00,237 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:55:00,577 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:55:00,872 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:55:01,140 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:55:01,507 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:55:01,815 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:55:02,434 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-21 17:55:03,044 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-21 17:55:04,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:55:04,529 INFO L93 Difference]: Finished difference Result 1238 states and 1532 transitions. [2020-08-21 17:55:04,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 17:55:04,535 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 97 [2020-08-21 17:55:04,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:55:04,540 INFO L225 Difference]: With dead ends: 1238 [2020-08-21 17:55:04,540 INFO L226 Difference]: Without dead ends: 663 [2020-08-21 17:55:04,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=279, Invalid=1127, Unknown=0, NotChecked=0, Total=1406 [2020-08-21 17:55:04,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2020-08-21 17:55:04,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 567. [2020-08-21 17:55:04,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-08-21 17:55:04,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 660 transitions. [2020-08-21 17:55:04,652 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 660 transitions. Word has length 97 [2020-08-21 17:55:04,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:55:04,654 INFO L479 AbstractCegarLoop]: Abstraction has 567 states and 660 transitions. [2020-08-21 17:55:04,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 17:55:04,654 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 660 transitions. [2020-08-21 17:55:04,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-21 17:55:04,656 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:55:04,657 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:55:04,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 17:55:04,657 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:55:04,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:55:04,658 INFO L82 PathProgramCache]: Analyzing trace with hash 773081915, now seen corresponding path program 1 times [2020-08-21 17:55:04,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:55:04,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222685407] [2020-08-21 17:55:04,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:55:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 17:55:04,748 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 17:55:04,748 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 17:55:04,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 17:55:04,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:55:04 BoogieIcfgContainer [2020-08-21 17:55:04,799 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 17:55:04,805 INFO L168 Benchmark]: Toolchain (without parser) took 36695.51 ms. Allocated memory was 137.9 MB in the beginning and 634.9 MB in the end (delta: 497.0 MB). Free memory was 100.4 MB in the beginning and 445.4 MB in the end (delta: -344.9 MB). Peak memory consumption was 152.1 MB. Max. memory is 7.1 GB. [2020-08-21 17:55:04,813 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 17:55:04,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.29 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 100.2 MB in the beginning and 171.8 MB in the end (delta: -71.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-08-21 17:55:04,816 INFO L168 Benchmark]: Boogie Preprocessor took 86.28 ms. Allocated memory is still 202.4 MB. Free memory was 171.8 MB in the beginning and 167.4 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-08-21 17:55:04,816 INFO L168 Benchmark]: RCFGBuilder took 1171.45 ms. Allocated memory was 202.4 MB in the beginning and 232.3 MB in the end (delta: 29.9 MB). Free memory was 167.4 MB in the beginning and 198.6 MB in the end (delta: -31.2 MB). Peak memory consumption was 88.2 MB. Max. memory is 7.1 GB. [2020-08-21 17:55:04,817 INFO L168 Benchmark]: TraceAbstraction took 34781.51 ms. Allocated memory was 232.3 MB in the beginning and 634.9 MB in the end (delta: 402.7 MB). Free memory was 198.6 MB in the beginning and 445.4 MB in the end (delta: -246.8 MB). Peak memory consumption was 155.9 MB. Max. memory is 7.1 GB. [2020-08-21 17:55:04,823 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 651.29 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 100.2 MB in the beginning and 171.8 MB in the end (delta: -71.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.28 ms. Allocated memory is still 202.4 MB. Free memory was 171.8 MB in the beginning and 167.4 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1171.45 ms. Allocated memory was 202.4 MB in the beginning and 232.3 MB in the end (delta: 29.9 MB). Free memory was 167.4 MB in the beginning and 198.6 MB in the end (delta: -31.2 MB). Peak memory consumption was 88.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34781.51 ms. Allocated memory was 232.3 MB in the beginning and 634.9 MB in the end (delta: 402.7 MB). Free memory was 198.6 MB in the beginning and 445.4 MB in the end (delta: -246.8 MB). Peak memory consumption was 155.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 887]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L480] int waterLevel = 1; [L481] int methaneLevelCritical = 0; [L578] int pumpRunning = 0; [L579] int systemActive = 1; [L749] int cleanupTimeShifts = 4; [L825] int retValue_acc ; [L826] int tmp ; [L830] FCALL select_helpers() [L831] FCALL select_features() [L832] CALL, EXPR valid_product() [L874] int retValue_acc ; [L877] retValue_acc = 1 [L878] return (retValue_acc); [L832] RET, EXPR valid_product() [L832] tmp = valid_product() [L834] COND TRUE \read(tmp) [L836] FCALL setup() [L837] CALL runTest() [L816] CALL test() [L411] int splverifierCounter ; [L412] int tmp ; [L413] int tmp___0 ; [L414] int tmp___1 ; [L415] int tmp___2 ; [L418] splverifierCounter = 0 [L420] COND TRUE 1 [L422] COND TRUE splverifierCounter < 4 [L428] tmp = __VERIFIER_nondet_int() [L430] COND TRUE \read(tmp) [L432] CALL waterRise() [L498] COND TRUE waterLevel < 2 [L499] waterLevel = waterLevel + 1 [L432] RET waterRise() [L438] tmp___0 = __VERIFIER_nondet_int() [L440] COND FALSE !(\read(tmp___0)) [L448] tmp___2 = __VERIFIER_nondet_int() [L450] COND TRUE \read(tmp___2) [L463] CALL timeShift() [L586] COND FALSE !(\read(pumpRunning)) [L593] COND TRUE \read(systemActive) [L595] CALL processEnvironment() [L615] int tmp ; [L618] COND TRUE ! pumpRunning [L620] CALL, EXPR isHighWaterLevel() [L730] int retValue_acc ; [L731] int tmp ; [L732] int tmp___0 ; [L736] CALL, EXPR isHighWaterSensorDry() [L560] int retValue_acc ; [L563] COND FALSE !(waterLevel < 2) [L567] retValue_acc = 0 [L568] return (retValue_acc); [L736] RET, EXPR isHighWaterSensorDry() [L736] tmp = isHighWaterSensorDry() [L738] COND FALSE !(\read(tmp)) [L741] tmp___0 = 1 [L743] retValue_acc = tmp___0 [L744] return (retValue_acc); [L620] RET, EXPR isHighWaterLevel() [L620] tmp = isHighWaterLevel() [L622] COND TRUE \read(tmp) [L624] CALL activatePump() [L649] int tmp ; [L653] CALL, EXPR isMethaneAlarm() [L674] int retValue_acc ; [L678] CALL, EXPR isMethaneLevelCritical() [L519] int retValue_acc ; [L522] retValue_acc = methaneLevelCritical [L523] return (retValue_acc); [L678] RET, EXPR isMethaneLevelCritical() [L678] retValue_acc = isMethaneLevelCritical() [L680] return (retValue_acc); [L653] RET, EXPR isMethaneAlarm() [L653] tmp = isMethaneAlarm() [L655] COND FALSE !(\read(tmp)) [L659] CALL activatePump__wrappee__highWaterSensor() [L643] pumpRunning = 1 [L659] RET activatePump__wrappee__highWaterSensor() [L624] RET activatePump() [L595] RET processEnvironment() [L601] CALL __utac_acc__Specification1_spec__1() [L893] int tmp ; [L894] int tmp___0 ; [L898] CALL, EXPR isMethaneLevelCritical() [L519] int retValue_acc ; [L522] retValue_acc = methaneLevelCritical [L523] return (retValue_acc); [L898] RET, EXPR isMethaneLevelCritical() [L898] tmp = isMethaneLevelCritical() [L900] COND FALSE !(\read(tmp)) [L601] RET __utac_acc__Specification1_spec__1() [L463] RET timeShift() [L420] COND TRUE 1 [L422] COND TRUE splverifierCounter < 4 [L428] tmp = __VERIFIER_nondet_int() [L430] COND FALSE !(\read(tmp)) [L438] tmp___0 = __VERIFIER_nondet_int() [L440] COND TRUE \read(tmp___0) [L442] CALL changeMethaneLevel() [L510] COND FALSE !(\read(methaneLevelCritical)) [L513] methaneLevelCritical = 1 [L442] RET changeMethaneLevel() [L448] tmp___2 = __VERIFIER_nondet_int() [L450] COND TRUE \read(tmp___2) [L463] CALL timeShift() [L586] COND TRUE \read(pumpRunning) [L588] CALL lowerWaterLevel() [L486] COND TRUE waterLevel > 0 [L487] waterLevel = waterLevel - 1 [L588] RET lowerWaterLevel() [L593] COND TRUE \read(systemActive) [L595] CALL processEnvironment() [L615] int tmp ; [L618] COND FALSE !(! pumpRunning) [L633] FCALL processEnvironment__wrappee__base() [L595] RET processEnvironment() [L601] CALL __utac_acc__Specification1_spec__1() [L893] int tmp ; [L894] int tmp___0 ; [L898] CALL, EXPR isMethaneLevelCritical() [L519] int retValue_acc ; [L522] retValue_acc = methaneLevelCritical [L523] return (retValue_acc); [L898] RET, EXPR isMethaneLevelCritical() [L898] tmp = isMethaneLevelCritical() [L900] COND TRUE \read(tmp) [L902] CALL, EXPR isPumpRunning() [L685] int retValue_acc ; [L688] retValue_acc = pumpRunning [L689] return (retValue_acc); [L902] RET, EXPR isPumpRunning() [L902] tmp___0 = isPumpRunning() [L904] COND TRUE \read(tmp___0) [L906] CALL __automaton_fail() [L887] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 222 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 34.6s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 28.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1133 SDtfs, 2290 SDslu, 1327 SDs, 0 SdLazy, 6355 SolverSat, 1427 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 391 GetRequests, 259 SyntacticMatches, 4 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 14.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=599occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 680 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 861 NumberOfCodeBlocks, 861 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 719 ConstructedInterpolants, 0 QuantifiedInterpolants, 229226 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 10/12 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...