/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:36:37,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:36:37,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:36:37,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:36:37,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:36:37,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:36:37,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:36:37,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:36:37,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:36:37,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:36:37,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:36:37,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:36:37,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:36:37,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:36:37,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:36:37,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:36:37,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:36:37,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:36:37,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:36:37,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:36:37,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:36:37,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:36:37,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:36:37,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:36:37,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:36:37,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:36:37,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:36:37,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:36:37,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:36:37,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:36:37,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:36:37,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:36:37,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:36:37,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:36:37,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:36:37,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:36:37,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:36:37,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:36:37,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:36:37,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:36:37,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:36:37,876 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 [2020-08-22 03:36:37,912 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:36:37,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:36:37,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:36:37,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:36:37,914 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:36:37,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:36:37,915 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:36:37,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:36:37,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:36:37,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:36:37,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:36:37,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:36:37,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:36:37,916 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:36:37,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:36:37,917 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:36:37,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:36:37,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:36:37,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:36:37,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:36:37,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:36:37,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:36:37,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:36:37,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:36:37,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:36:37,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:36:37,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:36:37,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:36:37,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:36:37,921 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-22 03:36:38,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:36:38,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:36:38,233 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:36:38,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:36:38,236 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:36:38,237 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-08-22 03:36:38,317 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdde53152/7dc9ea05cb9043f1b6d59db95c9400f0/FLAG1f49b87b3 [2020-08-22 03:36:38,890 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:36:38,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-08-22 03:36:38,905 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdde53152/7dc9ea05cb9043f1b6d59db95c9400f0/FLAG1f49b87b3 [2020-08-22 03:36:39,153 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdde53152/7dc9ea05cb9043f1b6d59db95c9400f0 [2020-08-22 03:36:39,164 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:36:39,166 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:36:39,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:36:39,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:36:39,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:36:39,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:36:39" (1/1) ... [2020-08-22 03:36:39,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c07bf98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:36:39, skipping insertion in model container [2020-08-22 03:36:39,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:36:39" (1/1) ... [2020-08-22 03:36:39,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:36:39,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:36:39,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:36:39,669 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:36:39,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:36:39,776 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:36:39,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:36:39 WrapperNode [2020-08-22 03:36:39,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:36:39,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:36:39,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:36:39,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:36:39,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:36:39" (1/1) ... [2020-08-22 03:36:39,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:36:39" (1/1) ... [2020-08-22 03:36:39,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:36:39" (1/1) ... [2020-08-22 03:36:39,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:36:39" (1/1) ... [2020-08-22 03:36:39,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:36:39" (1/1) ... [2020-08-22 03:36:39,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:36:39" (1/1) ... [2020-08-22 03:36:39,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:36:39" (1/1) ... [2020-08-22 03:36:39,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:36:39,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:36:39,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:36:39,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:36:39,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:36:39" (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 [2020-08-22 03:36:39,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:36:39,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:36:39,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 03:36:39,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 03:36:39,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 03:36:39,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 03:36:39,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 03:36:39,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 03:36:39,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 03:36:39,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 03:36:39,939 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 03:36:39,939 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 03:36:39,939 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 03:36:39,939 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 03:36:39,939 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 03:36:39,940 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 03:36:39,940 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 03:36:39,940 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 03:36:39,940 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 03:36:39,940 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 03:36:39,940 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 03:36:39,941 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 03:36:39,941 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 03:36:39,941 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 03:36:39,941 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 03:36:39,941 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 03:36:39,941 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 03:36:39,942 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 03:36:39,942 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:36:39,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 03:36:39,942 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 03:36:39,942 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 03:36:39,942 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 03:36:39,943 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 03:36:39,943 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 03:36:39,943 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 03:36:39,943 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 03:36:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:36:39,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:36:39,944 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 03:36:39,944 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 03:36:39,944 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 03:36:39,944 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 03:36:39,944 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 03:36:39,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 03:36:39,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 03:36:39,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 03:36:39,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 03:36:39,945 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 03:36:39,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:36:39,945 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 03:36:39,945 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 03:36:39,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 03:36:39,946 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 03:36:39,946 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 03:36:39,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:36:39,946 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 03:36:39,946 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 03:36:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 03:36:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 03:36:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 03:36:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 03:36:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 03:36:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 03:36:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 03:36:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 03:36:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 03:36:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 03:36:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 03:36:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 03:36:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 03:36:39,949 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 03:36:39,949 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 03:36:39,949 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 03:36:39,949 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 03:36:39,950 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 03:36:39,951 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 03:36:39,951 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 03:36:39,951 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 03:36:39,951 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 03:36:39,951 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 03:36:39,951 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 03:36:39,952 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 03:36:39,952 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:36:39,953 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 03:36:39,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:36:39,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 03:36:39,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:36:41,088 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:36:41,088 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 03:36:41,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:36:41 BoogieIcfgContainer [2020-08-22 03:36:41,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:36:41,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:36:41,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:36:41,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:36:41,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:36:39" (1/3) ... [2020-08-22 03:36:41,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b457a0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:36:41, skipping insertion in model container [2020-08-22 03:36:41,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:36:39" (2/3) ... [2020-08-22 03:36:41,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b457a0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:36:41, skipping insertion in model container [2020-08-22 03:36:41,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:36:41" (3/3) ... [2020-08-22 03:36:41,107 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product33.cil.c [2020-08-22 03:36:41,118 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:36:41,126 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:36:41,138 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:36:41,159 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:36:41,159 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:36:41,159 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:36:41,159 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:36:41,160 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:36:41,160 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:36:41,160 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:36:41,160 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:36:41,181 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states. [2020-08-22 03:36:41,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 03:36:41,192 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:36:41,193 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] [2020-08-22 03:36:41,193 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:36:41,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:36:41,200 INFO L82 PathProgramCache]: Analyzing trace with hash 936709255, now seen corresponding path program 1 times [2020-08-22 03:36:41,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:36:41,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666957978] [2020-08-22 03:36:41,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:36:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:42,012 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:36:42,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:36:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:42,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:36:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:42,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:36:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:42,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:36:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:42,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:36:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:42,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 03:36:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:42,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 03:36:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:42,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:36:42,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666957978] [2020-08-22 03:36:42,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:36:42,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:36:42,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260392187] [2020-08-22 03:36:42,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:36:42,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:36:42,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:36:42,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:36:42,189 INFO L87 Difference]: Start difference. First operand 151 states. Second operand 3 states. [2020-08-22 03:36:43,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:36:43,185 INFO L93 Difference]: Finished difference Result 249 states and 331 transitions. [2020-08-22 03:36:43,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:36:43,188 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 03:36:43,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:36:43,210 INFO L225 Difference]: With dead ends: 249 [2020-08-22 03:36:43,211 INFO L226 Difference]: Without dead ends: 135 [2020-08-22 03:36:43,217 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 [2020-08-22 03:36:43,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-22 03:36:43,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-22 03:36:43,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-22 03:36:43,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2020-08-22 03:36:43,369 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 46 [2020-08-22 03:36:43,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:36:43,370 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2020-08-22 03:36:43,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:36:43,371 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2020-08-22 03:36:43,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 03:36:43,375 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:36:43,375 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] [2020-08-22 03:36:43,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:36:43,376 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:36:43,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:36:43,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1814743517, now seen corresponding path program 1 times [2020-08-22 03:36:43,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:36:43,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548020980] [2020-08-22 03:36:43,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:36:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:43,700 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:36:43,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:36:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:43,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:36:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:43,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:36:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:43,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:36:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:43,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:36:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:43,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 03:36:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:43,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 03:36:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:43,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:36:43,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548020980] [2020-08-22 03:36:43,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:36:43,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:36:43,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352148935] [2020-08-22 03:36:43,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:36:43,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:36:43,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:36:43,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:36:43,767 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 4 states. [2020-08-22 03:36:44,144 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:36:44,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:36:44,803 INFO L93 Difference]: Finished difference Result 182 states and 222 transitions. [2020-08-22 03:36:44,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:36:44,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 03:36:44,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:36:44,810 INFO L225 Difference]: With dead ends: 182 [2020-08-22 03:36:44,810 INFO L226 Difference]: Without dead ends: 119 [2020-08-22 03:36:44,813 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 [2020-08-22 03:36:44,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-22 03:36:44,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-22 03:36:44,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-22 03:36:44,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-08-22 03:36:44,848 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 47 [2020-08-22 03:36:44,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:36:44,849 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-08-22 03:36:44,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:36:44,849 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-08-22 03:36:44,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 03:36:44,851 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:36:44,851 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] [2020-08-22 03:36:44,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:36:44,851 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:36:44,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:36:44,852 INFO L82 PathProgramCache]: Analyzing trace with hash 268149636, now seen corresponding path program 1 times [2020-08-22 03:36:44,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:36:44,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229788316] [2020-08-22 03:36:44,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:36:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:45,151 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:36:45,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:36:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:45,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:36:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:45,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:36:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:45,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:36:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:45,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:36:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:45,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 03:36:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:45,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 03:36:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:45,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:36:45,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229788316] [2020-08-22 03:36:45,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:36:45,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 03:36:45,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254113618] [2020-08-22 03:36:45,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 03:36:45,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:36:45,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 03:36:45,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 03:36:45,248 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 8 states. [2020-08-22 03:36:45,600 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:36:45,907 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:36:46,152 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:36:46,401 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:36:47,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:36:47,285 INFO L93 Difference]: Finished difference Result 191 states and 236 transitions. [2020-08-22 03:36:47,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 03:36:47,290 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 03:36:47,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:36:47,292 INFO L225 Difference]: With dead ends: 191 [2020-08-22 03:36:47,292 INFO L226 Difference]: Without dead ends: 119 [2020-08-22 03:36:47,296 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 [2020-08-22 03:36:47,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-22 03:36:47,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-22 03:36:47,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-22 03:36:47,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-08-22 03:36:47,342 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 51 [2020-08-22 03:36:47,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:36:47,343 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-08-22 03:36:47,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 03:36:47,343 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-08-22 03:36:47,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 03:36:47,354 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:36:47,354 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] [2020-08-22 03:36:47,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:36:47,354 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:36:47,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:36:47,355 INFO L82 PathProgramCache]: Analyzing trace with hash -169231603, now seen corresponding path program 1 times [2020-08-22 03:36:47,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:36:47,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753452649] [2020-08-22 03:36:47,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:36:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:47,660 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:36:47,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:36:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:47,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:36:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:47,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:36:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:47,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:36:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:47,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:36:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:47,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 03:36:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:47,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:36:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:47,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 03:36:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:47,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 03:36:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:47,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:36:47,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753452649] [2020-08-22 03:36:47,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:36:47,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 03:36:47,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345436395] [2020-08-22 03:36:47,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 03:36:47,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:36:47,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 03:36:47,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:36:47,749 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 6 states. [2020-08-22 03:36:48,053 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:36:49,105 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:36:49,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:36:49,517 INFO L93 Difference]: Finished difference Result 274 states and 340 transitions. [2020-08-22 03:36:49,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 03:36:49,518 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-22 03:36:49,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:36:49,520 INFO L225 Difference]: With dead ends: 274 [2020-08-22 03:36:49,521 INFO L226 Difference]: Without dead ends: 202 [2020-08-22 03:36:49,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-22 03:36:49,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-22 03:36:49,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 161. [2020-08-22 03:36:49,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-08-22 03:36:49,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 185 transitions. [2020-08-22 03:36:49,559 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 185 transitions. Word has length 59 [2020-08-22 03:36:49,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:36:49,559 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 185 transitions. [2020-08-22 03:36:49,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 03:36:49,560 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 185 transitions. [2020-08-22 03:36:49,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-22 03:36:49,561 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:36:49,561 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] [2020-08-22 03:36:49,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 03:36:49,561 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:36:49,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:36:49,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1300839735, now seen corresponding path program 1 times [2020-08-22 03:36:49,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:36:49,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548625728] [2020-08-22 03:36:49,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:36:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:49,831 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:36:49,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:36:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:49,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:36:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:49,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:36:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:49,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:36:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:49,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:36:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:49,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 03:36:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:49,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:36:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:49,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:36:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:49,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:36:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:49,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 03:36:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:49,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 03:36:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:49,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:36:49,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548625728] [2020-08-22 03:36:49,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:36:49,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 03:36:49,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662810931] [2020-08-22 03:36:49,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 03:36:49,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:36:49,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 03:36:49,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 03:36:49,954 INFO L87 Difference]: Start difference. First operand 161 states and 185 transitions. Second operand 8 states. [2020-08-22 03:36:50,260 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:36:51,254 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:36:51,509 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:36:51,751 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:36:51,977 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:36:52,264 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:36:52,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:36:52,956 INFO L93 Difference]: Finished difference Result 478 states and 600 transitions. [2020-08-22 03:36:52,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 03:36:52,957 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2020-08-22 03:36:52,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:36:52,962 INFO L225 Difference]: With dead ends: 478 [2020-08-22 03:36:52,962 INFO L226 Difference]: Without dead ends: 341 [2020-08-22 03:36:52,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-22 03:36:52,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-08-22 03:36:53,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 277. [2020-08-22 03:36:53,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-08-22 03:36:53,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 320 transitions. [2020-08-22 03:36:53,062 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 320 transitions. Word has length 73 [2020-08-22 03:36:53,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:36:53,063 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 320 transitions. [2020-08-22 03:36:53,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 03:36:53,063 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 320 transitions. [2020-08-22 03:36:53,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-22 03:36:53,064 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:36:53,065 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] [2020-08-22 03:36:53,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 03:36:53,065 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:36:53,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:36:53,066 INFO L82 PathProgramCache]: Analyzing trace with hash 2135215483, now seen corresponding path program 1 times [2020-08-22 03:36:53,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:36:53,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388990467] [2020-08-22 03:36:53,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:36:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:53,389 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:36:53,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:36:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:53,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:36:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:53,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:36:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:53,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:36:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:53,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:36:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:53,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:36:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:53,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 03:36:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:53,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:36:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:53,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:36:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:53,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:36:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:53,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-22 03:36:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:53,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 03:36:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:53,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:36:53,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388990467] [2020-08-22 03:36:53,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:36:53,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 03:36:53,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220810631] [2020-08-22 03:36:53,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 03:36:53,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:36:53,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 03:36:53,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 03:36:53,533 INFO L87 Difference]: Start difference. First operand 277 states and 320 transitions. Second operand 9 states. [2020-08-22 03:36:53,863 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:36:54,869 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:36:55,098 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:36:55,368 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:36:55,621 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:36:55,865 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:36:56,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:36:56,614 INFO L93 Difference]: Finished difference Result 380 states and 484 transitions. [2020-08-22 03:36:56,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 03:36:56,614 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-08-22 03:36:56,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:36:56,618 INFO L225 Difference]: With dead ends: 380 [2020-08-22 03:36:56,618 INFO L226 Difference]: Without dead ends: 377 [2020-08-22 03:36:56,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 03:36:56,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-08-22 03:36:56,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 277. [2020-08-22 03:36:56,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-08-22 03:36:56,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 319 transitions. [2020-08-22 03:36:56,680 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 319 transitions. Word has length 77 [2020-08-22 03:36:56,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:36:56,680 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 319 transitions. [2020-08-22 03:36:56,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 03:36:56,681 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 319 transitions. [2020-08-22 03:36:56,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-22 03:36:56,682 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:36:56,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:36:56,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 03:36:56,682 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:36:56,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:36:56,683 INFO L82 PathProgramCache]: Analyzing trace with hash 2125508241, now seen corresponding path program 1 times [2020-08-22 03:36:56,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:36:56,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474939886] [2020-08-22 03:36:56,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:36:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:56,970 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:36:56,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:36:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:57,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:36:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:57,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:36:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:57,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:36:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:57,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:36:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:57,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:36:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:57,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 03:36:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:57,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:36:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:57,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:36:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:57,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:36:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:57,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 03:36:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:57,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 03:36:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:57,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:36:57,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474939886] [2020-08-22 03:36:57,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:36:57,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 03:36:57,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150190095] [2020-08-22 03:36:57,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 03:36:57,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:36:57,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 03:36:57,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 03:36:57,173 INFO L87 Difference]: Start difference. First operand 277 states and 319 transitions. Second operand 9 states. [2020-08-22 03:36:57,988 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:36:58,240 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:36:58,470 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:36:58,704 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:36:59,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:36:59,456 INFO L93 Difference]: Finished difference Result 634 states and 793 transitions. [2020-08-22 03:36:59,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 03:36:59,457 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-22 03:36:59,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:36:59,461 INFO L225 Difference]: With dead ends: 634 [2020-08-22 03:36:59,461 INFO L226 Difference]: Without dead ends: 381 [2020-08-22 03:36:59,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 03:36:59,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-08-22 03:36:59,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 287. [2020-08-22 03:36:59,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-08-22 03:36:59,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 329 transitions. [2020-08-22 03:36:59,520 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 329 transitions. Word has length 78 [2020-08-22 03:36:59,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:36:59,520 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 329 transitions. [2020-08-22 03:36:59,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 03:36:59,520 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 329 transitions. [2020-08-22 03:36:59,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-22 03:36:59,521 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:36:59,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:36:59,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 03:36:59,522 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:36:59,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:36:59,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1616035151, now seen corresponding path program 1 times [2020-08-22 03:36:59,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:36:59,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107312326] [2020-08-22 03:36:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:36:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:59,774 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:36:59,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:36:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:59,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:36:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:59,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:36:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:59,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:36:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:59,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:36:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:59,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:36:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:59,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 03:36:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:59,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:36:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:59,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:36:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:59,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:36:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:59,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 03:36:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:59,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 03:36:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:36:59,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:36:59,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107312326] [2020-08-22 03:36:59,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:36:59,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 03:36:59,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107516043] [2020-08-22 03:36:59,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 03:36:59,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:36:59,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 03:36:59,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 03:36:59,917 INFO L87 Difference]: Start difference. First operand 287 states and 329 transitions. Second operand 11 states. [2020-08-22 03:37:00,407 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:00,629 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:00,845 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:01,386 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:01,621 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:01,857 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:37:02,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:37:02,709 INFO L93 Difference]: Finished difference Result 658 states and 831 transitions. [2020-08-22 03:37:02,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 03:37:02,710 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2020-08-22 03:37:02,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:37:02,713 INFO L225 Difference]: With dead ends: 658 [2020-08-22 03:37:02,713 INFO L226 Difference]: Without dead ends: 395 [2020-08-22 03:37:02,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 03:37:02,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-08-22 03:37:02,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 295. [2020-08-22 03:37:02,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-08-22 03:37:02,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 337 transitions. [2020-08-22 03:37:02,770 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 337 transitions. Word has length 78 [2020-08-22 03:37:02,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:37:02,770 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 337 transitions. [2020-08-22 03:37:02,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 03:37:02,771 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 337 transitions. [2020-08-22 03:37:02,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-22 03:37:02,772 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:37:02,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:37:02,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 03:37:02,773 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:37:02,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:37:02,773 INFO L82 PathProgramCache]: Analyzing trace with hash -394068690, now seen corresponding path program 1 times [2020-08-22 03:37:02,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:37:02,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502861324] [2020-08-22 03:37:02,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:37:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:03,031 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:37:03,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:37:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:03,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:37:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:03,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:37:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:03,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:37:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:03,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:37:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:03,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 03:37:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:03,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 03:37:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:03,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:37:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:03,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:37:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:03,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:37:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:03,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 03:37:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:03,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 03:37:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:37:03,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:37:03,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502861324] [2020-08-22 03:37:03,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:37:03,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 03:37:03,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907880984] [2020-08-22 03:37:03,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 03:37:03,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:37:03,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 03:37:03,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 03:37:03,180 INFO L87 Difference]: Start difference. First operand 295 states and 337 transitions. Second operand 7 states. [2020-08-22 03:37:03,605 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:37:04,102 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:37:05,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:37:05,724 INFO L93 Difference]: Finished difference Result 941 states and 1221 transitions. [2020-08-22 03:37:05,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 03:37:05,724 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-08-22 03:37:05,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:37:05,733 INFO L225 Difference]: With dead ends: 941 [2020-08-22 03:37:05,733 INFO L226 Difference]: Without dead ends: 670 [2020-08-22 03:37:05,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-22 03:37:05,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-08-22 03:37:05,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 571. [2020-08-22 03:37:05,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-08-22 03:37:05,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 679 transitions. [2020-08-22 03:37:05,873 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 679 transitions. Word has length 78 [2020-08-22 03:37:05,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:37:05,873 INFO L479 AbstractCegarLoop]: Abstraction has 571 states and 679 transitions. [2020-08-22 03:37:05,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 03:37:05,874 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 679 transitions. [2020-08-22 03:37:05,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-22 03:37:05,878 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:37:05,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:37:05,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 03:37:05,878 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:37:05,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:37:05,879 INFO L82 PathProgramCache]: Analyzing trace with hash 823271752, now seen corresponding path program 1 times [2020-08-22 03:37:05,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:37:05,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842641475] [2020-08-22 03:37:05,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:37:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 03:37:05,958 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 03:37:05,958 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 03:37:05,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 03:37:06,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 03:37:06 BoogieIcfgContainer [2020-08-22 03:37:06,005 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 03:37:06,013 INFO L168 Benchmark]: Toolchain (without parser) took 26841.39 ms. Allocated memory was 145.2 MB in the beginning and 557.8 MB in the end (delta: 412.6 MB). Free memory was 101.0 MB in the beginning and 167.3 MB in the end (delta: -66.3 MB). Peak memory consumption was 346.3 MB. Max. memory is 7.1 GB. [2020-08-22 03:37:06,015 INFO L168 Benchmark]: CDTParser took 0.76 ms. Allocated memory is still 145.2 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 03:37:06,019 INFO L168 Benchmark]: CACSL2BoogieTranslator took 610.32 ms. Allocated memory was 145.2 MB in the beginning and 205.0 MB in the end (delta: 59.8 MB). Free memory was 100.8 MB in the beginning and 172.6 MB in the end (delta: -71.8 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-08-22 03:37:06,020 INFO L168 Benchmark]: Boogie Preprocessor took 88.55 ms. Allocated memory is still 205.0 MB. Free memory was 172.6 MB in the beginning and 168.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-22 03:37:06,020 INFO L168 Benchmark]: RCFGBuilder took 1230.87 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 168.6 MB in the beginning and 196.1 MB in the end (delta: -27.5 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. [2020-08-22 03:37:06,021 INFO L168 Benchmark]: TraceAbstraction took 24906.30 ms. Allocated memory was 234.9 MB in the beginning and 557.8 MB in the end (delta: 323.0 MB). Free memory was 196.1 MB in the beginning and 167.3 MB in the end (delta: 28.8 MB). Peak memory consumption was 351.8 MB. Max. memory is 7.1 GB. [2020-08-22 03:37:06,032 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76 ms. Allocated memory is still 145.2 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 610.32 ms. Allocated memory was 145.2 MB in the beginning and 205.0 MB in the end (delta: 59.8 MB). Free memory was 100.8 MB in the beginning and 172.6 MB in the end (delta: -71.8 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.55 ms. Allocated memory is still 205.0 MB. Free memory was 172.6 MB in the beginning and 168.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1230.87 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 168.6 MB in the beginning and 196.1 MB in the end (delta: -27.5 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24906.30 ms. Allocated memory was 234.9 MB in the beginning and 557.8 MB in the end (delta: 323.0 MB). Free memory was 196.1 MB in the beginning and 167.3 MB in the end (delta: 28.8 MB). Peak memory consumption was 351.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 410]: 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; [L424] int pumpRunning = 0; [L425] int systemActive = 1; [L683] int cleanupTimeShifts = 4; [L806] int waterLevel = 1; [L807] int methaneLevelCritical = 0; [L756] int retValue_acc ; [L757] int tmp ; [L761] FCALL select_helpers() [L762] FCALL select_features() [L763] CALL, EXPR valid_product() [L674] int retValue_acc ; [L677] retValue_acc = 1 [L678] return (retValue_acc); [L763] RET, EXPR valid_product() [L763] tmp = valid_product() [L765] COND TRUE \read(tmp) [L767] FCALL setup() [L768] CALL runTest() [L750] CALL test() [L581] int splverifierCounter ; [L582] int tmp ; [L583] int tmp___0 ; [L584] int tmp___1 ; [L585] int tmp___2 ; [L588] splverifierCounter = 0 [L590] COND TRUE 1 [L592] COND TRUE splverifierCounter < 4 [L598] tmp = __VERIFIER_nondet_int() [L600] COND TRUE \read(tmp) [L602] CALL waterRise() [L824] COND TRUE waterLevel < 2 [L825] waterLevel = waterLevel + 1 [L602] RET waterRise() [L608] tmp___0 = __VERIFIER_nondet_int() [L610] COND TRUE \read(tmp___0) [L612] CALL changeMethaneLevel() [L836] COND FALSE !(\read(methaneLevelCritical)) [L839] methaneLevelCritical = 1 [L612] RET changeMethaneLevel() [L618] tmp___2 = __VERIFIER_nondet_int() [L620] COND TRUE \read(tmp___2) [L633] CALL timeShift() [L432] COND FALSE !(\read(pumpRunning)) [L439] COND TRUE \read(systemActive) [L441] CALL processEnvironment() [L461] int tmp ; [L464] COND TRUE ! pumpRunning [L466] CALL, EXPR isHighWaterLevel() [L558] int retValue_acc ; [L559] int tmp ; [L560] int tmp___0 ; [L564] CALL, EXPR isHighWaterSensorDry() [L886] int retValue_acc ; [L889] COND FALSE !(waterLevel < 2) [L893] retValue_acc = 0 [L894] return (retValue_acc); [L564] RET, EXPR isHighWaterSensorDry() [L564] tmp = isHighWaterSensorDry() [L566] COND FALSE !(\read(tmp)) [L569] tmp___0 = 1 [L571] retValue_acc = tmp___0 [L572] return (retValue_acc); [L466] RET, EXPR isHighWaterLevel() [L466] tmp = isHighWaterLevel() [L468] COND TRUE \read(tmp) [L470] CALL activatePump() [L489] pumpRunning = 1 [L470] RET activatePump() [L441] RET processEnvironment() [L447] CALL __utac_acc__Specification1_spec__1() [L780] int tmp ; [L781] int tmp___0 ; [L785] CALL, EXPR isMethaneLevelCritical() [L845] int retValue_acc ; [L848] retValue_acc = methaneLevelCritical [L849] return (retValue_acc); [L785] RET, EXPR isMethaneLevelCritical() [L785] tmp = isMethaneLevelCritical() [L787] COND TRUE \read(tmp) [L789] CALL, EXPR isPumpRunning() [L513] int retValue_acc ; [L516] retValue_acc = pumpRunning [L517] return (retValue_acc); [L789] RET, EXPR isPumpRunning() [L789] tmp___0 = isPumpRunning() [L791] COND TRUE \read(tmp___0) [L793] CALL __automaton_fail() [L410] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 19.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 856 SDtfs, 1520 SDslu, 833 SDs, 0 SdLazy, 3980 SolverSat, 920 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 297 GetRequests, 202 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=571occurred 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: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 574 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 669 NumberOfCodeBlocks, 669 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 578 ConstructedInterpolants, 0 QuantifiedInterpolants, 173318 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...