/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:54:32,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:54:32,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:54:32,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:54:32,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:54:32,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:54:32,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:54:32,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:54:32,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:54:32,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:54:32,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:54:32,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:54:32,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:54:32,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:54:32,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:54:32,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:54:32,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:54:32,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:54:32,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:54:32,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:54:32,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:54:32,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:54:32,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:54:32,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:54:32,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:54:32,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:54:32,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:54:32,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:54:32,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:54:32,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:54:32,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:54:32,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:54:32,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:54:32,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:54:32,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:54:32,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:54:32,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:54:32,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:54:32,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:54:32,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:54:32,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:54:32,805 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 [2020-08-18 20:54:32,849 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:54:32,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:54:32,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:54:32,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:54:32,852 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:54:32,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:54:32,853 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:54:32,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:54:32,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:54:32,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:54:32,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:54:32,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:54:32,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:54:32,855 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:54:32,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:54:32,856 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:54:32,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:54:32,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:54:32,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:54:32,857 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:54:32,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:54:32,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:54:32,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:54:32,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:54:32,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:54:32,858 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:54:32,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:54:32,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:54:32,858 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:54:32,858 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=5;interpolation-heuristic=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 20:54:33,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:54:33,218 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:54:33,225 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:54:33,227 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:54:33,228 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:54:33,229 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product35.cil.c [2020-08-18 20:54:33,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44bd68c48/ac29e44897c54c8db27323c90ed371f1/FLAG2a517fe16 [2020-08-18 20:54:33,853 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:54:33,854 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product35.cil.c [2020-08-18 20:54:33,868 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44bd68c48/ac29e44897c54c8db27323c90ed371f1/FLAG2a517fe16 [2020-08-18 20:54:34,211 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44bd68c48/ac29e44897c54c8db27323c90ed371f1 [2020-08-18 20:54:34,222 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:54:34,225 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:54:34,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:54:34,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:54:34,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:54:34,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:54:34" (1/1) ... [2020-08-18 20:54:34,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67e77f45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:34, skipping insertion in model container [2020-08-18 20:54:34,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:54:34" (1/1) ... [2020-08-18 20:54:34,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:54:34,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:54:34,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:54:34,744 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:54:34,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:54:34,867 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:54:34,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:34 WrapperNode [2020-08-18 20:54:34,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:54:34,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:54:34,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:54:34,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:54:34,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:34" (1/1) ... [2020-08-18 20:54:34,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:34" (1/1) ... [2020-08-18 20:54:34,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:34" (1/1) ... [2020-08-18 20:54:34,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:34" (1/1) ... [2020-08-18 20:54:34,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:34" (1/1) ... [2020-08-18 20:54:34,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:34" (1/1) ... [2020-08-18 20:54:34,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:34" (1/1) ... [2020-08-18 20:54:34,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:54:34,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:54:34,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:54:34,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:54:34,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:34" (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 [2020-08-18 20:54:35,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:54:35,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:54:35,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:54:35,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:54:35,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:54:35,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:54:35,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:54:35,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:54:35,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:54:35,041 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:54:35,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:54:35,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:54:35,042 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:54:35,042 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:54:35,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:54:35,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:54:35,044 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:54:35,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 20:54:35,044 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 20:54:35,044 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:54:35,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 20:54:35,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 20:54:35,045 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:54:35,045 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:54:35,045 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:54:35,046 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:54:35,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:54:35,046 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:54:35,047 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:54:35,047 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:54:35,047 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:54:35,047 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:54:35,047 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:54:35,047 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:54:35,048 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:54:35,048 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:54:35,048 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:54:35,048 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:54:35,048 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 20:54:35,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:54:35,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:54:35,049 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:54:35,049 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:54:35,049 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:54:35,049 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:54:35,049 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:54:35,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:54:35,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:54:35,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:54:35,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:54:35,050 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:54:35,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:54:35,050 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:54:35,050 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:54:35,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:54:35,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:54:35,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:54:35,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:54:35,052 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:54:35,052 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:54:35,052 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:54:35,052 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:54:35,052 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 20:54:35,052 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:54:35,053 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:54:35,053 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:54:35,053 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:54:35,053 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:54:35,053 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 20:54:35,053 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 20:54:35,053 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:54:35,054 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:54:35,054 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 20:54:35,055 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:54:35,055 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:54:35,055 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:54:35,056 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:54:35,057 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:54:35,057 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:54:35,057 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 20:54:35,057 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:54:35,057 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:54:35,058 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:54:35,058 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:54:35,058 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:54:35,058 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:54:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:54:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:54:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:54:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:54:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:54:35,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:54:36,180 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:54:36,180 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:54:36,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:54:36 BoogieIcfgContainer [2020-08-18 20:54:36,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:54:36,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:54:36,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:54:36,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:54:36,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:54:34" (1/3) ... [2020-08-18 20:54:36,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b33d368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:54:36, skipping insertion in model container [2020-08-18 20:54:36,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:34" (2/3) ... [2020-08-18 20:54:36,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b33d368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:54:36, skipping insertion in model container [2020-08-18 20:54:36,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:54:36" (3/3) ... [2020-08-18 20:54:36,199 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product35.cil.c [2020-08-18 20:54:36,210 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:54:36,220 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:54:36,235 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:54:36,264 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:54:36,264 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:54:36,264 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:54:36,264 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:54:36,265 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:54:36,265 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:54:36,265 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:54:36,265 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:54:36,287 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2020-08-18 20:54:36,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 20:54:36,297 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:54:36,298 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] [2020-08-18 20:54:36,298 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:54:36,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:54:36,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1759491915, now seen corresponding path program 1 times [2020-08-18 20:54:36,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:54:36,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615384025] [2020-08-18 20:54:36,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:54:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:36,961 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:54:36,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:54:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:37,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:54:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:37,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:54:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:37,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:54:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:37,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:54:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:37,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:54:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:37,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:54:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:37,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 20:54:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:37,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:54:37,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615384025] [2020-08-18 20:54:37,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:54:37,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:54:37,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114700794] [2020-08-18 20:54:37,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:54:37,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:54:37,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:54:37,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:54:37,125 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 4 states. [2020-08-18 20:54:38,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:54:38,176 INFO L93 Difference]: Finished difference Result 269 states and 353 transitions. [2020-08-18 20:54:38,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 20:54:38,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 20:54:38,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:54:38,194 INFO L225 Difference]: With dead ends: 269 [2020-08-18 20:54:38,194 INFO L226 Difference]: Without dead ends: 151 [2020-08-18 20:54:38,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:54:38,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-18 20:54:38,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 119. [2020-08-18 20:54:38,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-18 20:54:38,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2020-08-18 20:54:38,294 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 51 [2020-08-18 20:54:38,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:54:38,295 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2020-08-18 20:54:38,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:54:38,295 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2020-08-18 20:54:38,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 20:54:38,299 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:54:38,299 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] [2020-08-18 20:54:38,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:54:38,300 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:54:38,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:54:38,300 INFO L82 PathProgramCache]: Analyzing trace with hash -273292015, now seen corresponding path program 1 times [2020-08-18 20:54:38,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:54:38,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160135936] [2020-08-18 20:54:38,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:54:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:38,606 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:54:38,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:54:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:38,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:54:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:38,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:54:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:38,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:54:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:38,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:54:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:38,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:54:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:38,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:54:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:38,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:54:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:38,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:54:38,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160135936] [2020-08-18 20:54:38,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:54:38,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:54:38,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931861854] [2020-08-18 20:54:38,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:54:38,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:54:38,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:54:38,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:54:38,689 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand 5 states. [2020-08-18 20:54:39,149 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:54:39,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:54:39,953 INFO L93 Difference]: Finished difference Result 205 states and 254 transitions. [2020-08-18 20:54:39,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 20:54:39,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 20:54:39,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:54:39,959 INFO L225 Difference]: With dead ends: 205 [2020-08-18 20:54:39,960 INFO L226 Difference]: Without dead ends: 141 [2020-08-18 20:54:39,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:54:39,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-18 20:54:40,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 110. [2020-08-18 20:54:40,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-08-18 20:54:40,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 127 transitions. [2020-08-18 20:54:40,016 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 127 transitions. Word has length 52 [2020-08-18 20:54:40,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:54:40,017 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 127 transitions. [2020-08-18 20:54:40,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:54:40,018 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 127 transitions. [2020-08-18 20:54:40,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 20:54:40,026 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:54:40,026 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] [2020-08-18 20:54:40,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:54:40,027 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:54:40,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:54:40,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1232114680, now seen corresponding path program 1 times [2020-08-18 20:54:40,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:54:40,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454536627] [2020-08-18 20:54:40,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:54:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:40,443 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:54:40,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:54:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:40,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:54:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:40,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:54:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:40,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:54:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:40,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:54:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:40,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:54:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:40,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 20:54:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:40,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:54:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:40,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:54:40,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454536627] [2020-08-18 20:54:40,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:54:40,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:54:40,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67998858] [2020-08-18 20:54:40,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:54:40,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:54:40,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:54:40,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:54:40,588 INFO L87 Difference]: Start difference. First operand 110 states and 127 transitions. Second operand 9 states. [2020-08-18 20:54:40,925 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:54:41,220 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:54:41,501 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:54:41,721 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:54:42,495 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:54:43,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:54:43,795 INFO L93 Difference]: Finished difference Result 374 states and 471 transitions. [2020-08-18 20:54:43,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 20:54:43,797 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-18 20:54:43,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:54:43,802 INFO L225 Difference]: With dead ends: 374 [2020-08-18 20:54:43,802 INFO L226 Difference]: Without dead ends: 292 [2020-08-18 20:54:43,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 20:54:43,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-08-18 20:54:43,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 223. [2020-08-18 20:54:43,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-08-18 20:54:43,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 268 transitions. [2020-08-18 20:54:43,871 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 268 transitions. Word has length 56 [2020-08-18 20:54:43,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:54:43,872 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 268 transitions. [2020-08-18 20:54:43,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:54:43,872 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 268 transitions. [2020-08-18 20:54:43,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-18 20:54:43,873 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:54:43,874 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] [2020-08-18 20:54:43,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:54:43,874 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:54:43,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:54:43,875 INFO L82 PathProgramCache]: Analyzing trace with hash 466387433, now seen corresponding path program 1 times [2020-08-18 20:54:43,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:54:43,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862207231] [2020-08-18 20:54:43,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:54:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:44,175 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:54:44,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:54:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:44,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:54:44,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:44,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:54:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:44,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:54:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:44,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:54:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:44,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:54:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:44,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:54:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:44,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:54:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:44,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 20:54:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:44,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:54:44,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862207231] [2020-08-18 20:54:44,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:54:44,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:54:44,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548625728] [2020-08-18 20:54:44,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:54:44,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:54:44,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:54:44,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:54:44,275 INFO L87 Difference]: Start difference. First operand 223 states and 268 transitions. Second operand 9 states. [2020-08-18 20:54:44,622 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:54:45,721 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:54:46,021 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:54:46,319 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:54:46,571 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:54:47,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:54:47,600 INFO L93 Difference]: Finished difference Result 711 states and 943 transitions. [2020-08-18 20:54:47,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 20:54:47,602 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-18 20:54:47,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:54:47,610 INFO L225 Difference]: With dead ends: 711 [2020-08-18 20:54:47,610 INFO L226 Difference]: Without dead ends: 516 [2020-08-18 20:54:47,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 20:54:47,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-08-18 20:54:47,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 394. [2020-08-18 20:54:47,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-08-18 20:54:47,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 476 transitions. [2020-08-18 20:54:47,763 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 476 transitions. Word has length 62 [2020-08-18 20:54:47,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:54:47,764 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 476 transitions. [2020-08-18 20:54:47,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:54:47,764 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 476 transitions. [2020-08-18 20:54:47,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-18 20:54:47,766 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:54:47,766 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] [2020-08-18 20:54:47,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:54:47,766 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:54:47,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:54:47,767 INFO L82 PathProgramCache]: Analyzing trace with hash -995650491, now seen corresponding path program 1 times [2020-08-18 20:54:47,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:54:47,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006296060] [2020-08-18 20:54:47,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:54:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:48,091 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:54:48,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:54:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:48,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:54:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:48,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:54:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:48,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:54:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:48,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:54:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:48,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:54:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:48,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:54:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:48,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 20:54:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:48,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 20:54:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:48,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 20:54:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:48,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:54:48,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006296060] [2020-08-18 20:54:48,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:54:48,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:54:48,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957836690] [2020-08-18 20:54:48,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:54:48,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:54:48,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:54:48,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:54:48,248 INFO L87 Difference]: Start difference. First operand 394 states and 476 transitions. Second operand 10 states. [2020-08-18 20:54:48,716 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:54:49,816 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:54:50,115 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:54:50,367 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:54:50,888 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:54:51,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:54:51,903 INFO L93 Difference]: Finished difference Result 1128 states and 1528 transitions. [2020-08-18 20:54:51,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 20:54:51,904 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-18 20:54:51,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:54:51,911 INFO L225 Difference]: With dead ends: 1128 [2020-08-18 20:54:51,912 INFO L226 Difference]: Without dead ends: 762 [2020-08-18 20:54:51,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-18 20:54:51,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2020-08-18 20:54:52,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 577. [2020-08-18 20:54:52,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2020-08-18 20:54:52,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 699 transitions. [2020-08-18 20:54:52,042 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 699 transitions. Word has length 66 [2020-08-18 20:54:52,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:54:52,043 INFO L479 AbstractCegarLoop]: Abstraction has 577 states and 699 transitions. [2020-08-18 20:54:52,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:54:52,044 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 699 transitions. [2020-08-18 20:54:52,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 20:54:52,046 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:54:52,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:54:52,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:54:52,047 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:54:52,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:54:52,047 INFO L82 PathProgramCache]: Analyzing trace with hash 155563889, now seen corresponding path program 1 times [2020-08-18 20:54:52,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:54:52,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006731006] [2020-08-18 20:54:52,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:54:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:52,358 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:54:52,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:54:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:52,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:54:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:52,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:54:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:52,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:54:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:52,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:54:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:52,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:54:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:52,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:54:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:52,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:54:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:52,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:54:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:52,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:54:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:52,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:54:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:52,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 20:54:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:52,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 20:54:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:52,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:54:52,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006731006] [2020-08-18 20:54:52,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:54:52,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:54:52,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831970615] [2020-08-18 20:54:52,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:54:52,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:54:52,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:54:52,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:54:52,556 INFO L87 Difference]: Start difference. First operand 577 states and 699 transitions. Second operand 10 states. [2020-08-18 20:54:52,967 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:54:53,846 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:54:54,080 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:54:54,375 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:54:54,625 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:54:56,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:54:56,382 INFO L93 Difference]: Finished difference Result 2076 states and 2977 transitions. [2020-08-18 20:54:56,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 20:54:56,384 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-08-18 20:54:56,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:54:56,405 INFO L225 Difference]: With dead ends: 2076 [2020-08-18 20:54:56,405 INFO L226 Difference]: Without dead ends: 1527 [2020-08-18 20:54:56,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-18 20:54:56,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2020-08-18 20:54:56,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1103. [2020-08-18 20:54:56,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-08-18 20:54:56,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1340 transitions. [2020-08-18 20:54:56,716 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1340 transitions. Word has length 83 [2020-08-18 20:54:56,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:54:56,717 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1340 transitions. [2020-08-18 20:54:56,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:54:56,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1340 transitions. [2020-08-18 20:54:56,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 20:54:56,722 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:54:56,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:54:56,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:54:56,722 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:54:56,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:54:56,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1955726480, now seen corresponding path program 1 times [2020-08-18 20:54:56,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:54:56,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701340531] [2020-08-18 20:54:56,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:54:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:56,998 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:54:56,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:54:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:57,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:54:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:57,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:54:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:57,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:54:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:57,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:54:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:57,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:54:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:57,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:54:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:57,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:54:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:57,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:54:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:57,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:54:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:57,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:54:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:57,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 20:54:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:57,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 20:54:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:57,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:54:57,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701340531] [2020-08-18 20:54:57,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:54:57,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:54:57,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679788903] [2020-08-18 20:54:57,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:54:57,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:54:57,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:54:57,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:54:57,201 INFO L87 Difference]: Start difference. First operand 1103 states and 1340 transitions. Second operand 10 states. [2020-08-18 20:54:58,249 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:54:58,528 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 20:54:58,808 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:54:59,066 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:00,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:00,483 INFO L93 Difference]: Finished difference Result 2615 states and 3505 transitions. [2020-08-18 20:55:00,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 20:55:00,484 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-08-18 20:55:00,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:00,496 INFO L225 Difference]: With dead ends: 2615 [2020-08-18 20:55:00,497 INFO L226 Difference]: Without dead ends: 1540 [2020-08-18 20:55:00,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:55:00,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2020-08-18 20:55:00,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1143. [2020-08-18 20:55:00,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1143 states. [2020-08-18 20:55:00,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1380 transitions. [2020-08-18 20:55:00,748 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1380 transitions. Word has length 83 [2020-08-18 20:55:00,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:00,749 INFO L479 AbstractCegarLoop]: Abstraction has 1143 states and 1380 transitions. [2020-08-18 20:55:00,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:55:00,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1380 transitions. [2020-08-18 20:55:00,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 20:55:00,759 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:00,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:00,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:55:00,759 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:00,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:00,760 INFO L82 PathProgramCache]: Analyzing trace with hash -569523086, now seen corresponding path program 1 times [2020-08-18 20:55:00,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:00,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497215946] [2020-08-18 20:55:00,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:01,062 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:01,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:01,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:01,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:01,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:01,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:01,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:01,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:55:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:01,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:55:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:01,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:01,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:01,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:55:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:01,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 20:55:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:01,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 20:55:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:01,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:55:01,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497215946] [2020-08-18 20:55:01,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:55:01,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 20:55:01,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488135212] [2020-08-18 20:55:01,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:55:01,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:01,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:55:01,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:55:01,208 INFO L87 Difference]: Start difference. First operand 1143 states and 1380 transitions. Second operand 12 states. [2020-08-18 20:55:01,746 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:02,001 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:02,261 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:03,003 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:03,277 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:03,528 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:04,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:04,779 INFO L93 Difference]: Finished difference Result 2319 states and 3065 transitions. [2020-08-18 20:55:04,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 20:55:04,780 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-08-18 20:55:04,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:04,789 INFO L225 Difference]: With dead ends: 2319 [2020-08-18 20:55:04,789 INFO L226 Difference]: Without dead ends: 1204 [2020-08-18 20:55:04,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 20:55:04,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2020-08-18 20:55:04,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 927. [2020-08-18 20:55:04,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-08-18 20:55:04,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1088 transitions. [2020-08-18 20:55:04,995 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1088 transitions. Word has length 83 [2020-08-18 20:55:04,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:04,995 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1088 transitions. [2020-08-18 20:55:04,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:55:04,996 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1088 transitions. [2020-08-18 20:55:04,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 20:55:04,998 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:04,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:04,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:55:04,999 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:04,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:04,999 INFO L82 PathProgramCache]: Analyzing trace with hash 855595353, now seen corresponding path program 1 times [2020-08-18 20:55:05,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:05,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964160709] [2020-08-18 20:55:05,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,288 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:05,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:55:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:55:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:55:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:55:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 20:55:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 20:55:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:55:05,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964160709] [2020-08-18 20:55:05,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:55:05,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:55:05,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914388676] [2020-08-18 20:55:05,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:55:05,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:05,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:55:05,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:55:05,381 INFO L87 Difference]: Start difference. First operand 927 states and 1088 transitions. Second operand 8 states. [2020-08-18 20:55:06,088 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:08,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:08,631 INFO L93 Difference]: Finished difference Result 1851 states and 2454 transitions. [2020-08-18 20:55:08,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 20:55:08,632 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-08-18 20:55:08,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:08,644 INFO L225 Difference]: With dead ends: 1851 [2020-08-18 20:55:08,644 INFO L226 Difference]: Without dead ends: 1848 [2020-08-18 20:55:08,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-18 20:55:08,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2020-08-18 20:55:09,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1424. [2020-08-18 20:55:09,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2020-08-18 20:55:09,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 1688 transitions. [2020-08-18 20:55:09,064 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 1688 transitions. Word has length 87 [2020-08-18 20:55:09,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:09,065 INFO L479 AbstractCegarLoop]: Abstraction has 1424 states and 1688 transitions. [2020-08-18 20:55:09,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:55:09,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 1688 transitions. [2020-08-18 20:55:09,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-08-18 20:55:09,073 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:09,073 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:09,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:55:09,074 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:09,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:09,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1738865668, now seen corresponding path program 1 times [2020-08-18 20:55:09,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:09,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376297018] [2020-08-18 20:55:09,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 20:55:09,166 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 20:55:09,167 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 20:55:09,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 20:55:09,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:55:09 BoogieIcfgContainer [2020-08-18 20:55:09,218 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:55:09,222 INFO L168 Benchmark]: Toolchain (without parser) took 34997.02 ms. Allocated memory was 141.0 MB in the beginning and 707.3 MB in the end (delta: 566.2 MB). Free memory was 103.2 MB in the beginning and 606.1 MB in the end (delta: -502.9 MB). Peak memory consumption was 63.3 MB. Max. memory is 7.1 GB. [2020-08-18 20:55:09,226 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 20:55:09,231 INFO L168 Benchmark]: CACSL2BoogieTranslator took 641.59 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 103.0 MB in the beginning and 170.1 MB in the end (delta: -67.1 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-08-18 20:55:09,232 INFO L168 Benchmark]: Boogie Preprocessor took 88.69 ms. Allocated memory is still 202.9 MB. Free memory was 170.1 MB in the beginning and 165.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-08-18 20:55:09,232 INFO L168 Benchmark]: RCFGBuilder took 1232.66 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 165.5 MB in the beginning and 192.8 MB in the end (delta: -27.3 MB). Peak memory consumption was 79.4 MB. Max. memory is 7.1 GB. [2020-08-18 20:55:09,233 INFO L168 Benchmark]: TraceAbstraction took 33026.96 ms. Allocated memory was 235.9 MB in the beginning and 707.3 MB in the end (delta: 471.3 MB). Free memory was 192.8 MB in the beginning and 606.1 MB in the end (delta: -413.3 MB). Peak memory consumption was 58.0 MB. Max. memory is 7.1 GB. [2020-08-18 20:55:09,241 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 641.59 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 103.0 MB in the beginning and 170.1 MB in the end (delta: -67.1 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.69 ms. Allocated memory is still 202.9 MB. Free memory was 170.1 MB in the beginning and 165.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1232.66 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 165.5 MB in the beginning and 192.8 MB in the end (delta: -27.3 MB). Peak memory consumption was 79.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33026.96 ms. Allocated memory was 235.9 MB in the beginning and 707.3 MB in the end (delta: 471.3 MB). Free memory was 192.8 MB in the beginning and 606.1 MB in the end (delta: -413.3 MB). Peak memory consumption was 58.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 736]: 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; [L416] int pumpRunning = 0; [L417] int systemActive = 1; [L655] int methAndRunningLastTime ; [L741] int cleanupTimeShifts = 4; [L839] int waterLevel = 1; [L840] int methaneLevelCritical = 0; [L815] int retValue_acc ; [L816] int tmp ; [L820] FCALL select_helpers() [L821] FCALL select_features() [L822] CALL, EXPR valid_product() [L723] int retValue_acc ; [L726] retValue_acc = 1 [L727] return (retValue_acc); [L822] RET, EXPR valid_product() [L822] tmp = valid_product() [L824] COND TRUE \read(tmp) [L826] FCALL setup() [L827] CALL runTest() [L808] CALL __utac_acc__Specification2_spec__1() [L660] methAndRunningLastTime = 0 [L808] RET __utac_acc__Specification2_spec__1() [L809] CALL test() [L588] int splverifierCounter ; [L589] int tmp ; [L590] int tmp___0 ; [L591] int tmp___1 ; [L592] int tmp___2 ; [L595] splverifierCounter = 0 [L597] COND TRUE 1 [L599] COND TRUE splverifierCounter < 4 [L605] tmp = __VERIFIER_nondet_int() [L607] COND TRUE \read(tmp) [L609] CALL waterRise() [L857] COND TRUE waterLevel < 2 [L858] waterLevel = waterLevel + 1 [L609] RET waterRise() [L615] tmp___0 = __VERIFIER_nondet_int() [L617] COND TRUE \read(tmp___0) [L619] CALL changeMethaneLevel() [L869] COND FALSE !(\read(methaneLevelCritical)) [L872] methaneLevelCritical = 1 [L619] RET changeMethaneLevel() [L625] tmp___2 = __VERIFIER_nondet_int() [L627] COND TRUE \read(tmp___2) [L642] CALL timeShift() [L424] COND FALSE !(\read(pumpRunning)) [L431] COND TRUE \read(systemActive) [L433] CALL processEnvironment() [L453] int tmp ; [L456] COND TRUE ! pumpRunning [L458] CALL, EXPR isHighWaterLevel() [L550] int retValue_acc ; [L551] int tmp ; [L552] int tmp___0 ; [L556] CALL, EXPR isHighWaterSensorDry() [L919] int retValue_acc ; [L922] COND FALSE !(waterLevel < 2) [L926] retValue_acc = 0 [L927] return (retValue_acc); [L556] RET, EXPR isHighWaterSensorDry() [L556] tmp = isHighWaterSensorDry() [L558] COND FALSE !(\read(tmp)) [L561] tmp___0 = 1 [L563] retValue_acc = tmp___0 [L564] return (retValue_acc); [L458] RET, EXPR isHighWaterLevel() [L458] tmp = isHighWaterLevel() [L460] COND TRUE \read(tmp) [L462] CALL activatePump() [L481] pumpRunning = 1 [L462] RET activatePump() [L433] RET processEnvironment() [L439] CALL __utac_acc__Specification2_spec__2() [L665] int tmp ; [L666] int tmp___0 ; [L670] CALL, EXPR isMethaneLevelCritical() [L878] int retValue_acc ; [L881] retValue_acc = methaneLevelCritical [L882] return (retValue_acc); [L670] RET, EXPR isMethaneLevelCritical() [L670] tmp = isMethaneLevelCritical() [L672] COND TRUE \read(tmp) [L674] CALL, EXPR isPumpRunning() [L505] int retValue_acc ; [L508] retValue_acc = pumpRunning [L509] return (retValue_acc); [L674] RET, EXPR isPumpRunning() [L674] tmp___0 = isPumpRunning() [L676] COND TRUE \read(tmp___0) [L677] COND FALSE !(\read(methAndRunningLastTime)) [L682] methAndRunningLastTime = 1 [L439] RET __utac_acc__Specification2_spec__2() [L642] RET timeShift() [L597] COND TRUE 1 [L599] COND TRUE splverifierCounter < 4 [L605] tmp = __VERIFIER_nondet_int() [L607] COND FALSE !(\read(tmp)) [L615] tmp___0 = __VERIFIER_nondet_int() [L617] COND FALSE !(\read(tmp___0)) [L625] tmp___2 = __VERIFIER_nondet_int() [L627] COND TRUE \read(tmp___2) [L642] CALL timeShift() [L424] COND TRUE \read(pumpRunning) [L426] CALL lowerWaterLevel() [L845] COND TRUE waterLevel > 0 [L846] waterLevel = waterLevel - 1 [L426] RET lowerWaterLevel() [L431] COND TRUE \read(systemActive) [L433] CALL processEnvironment() [L453] int tmp ; [L456] COND FALSE !(! pumpRunning) [L471] FCALL processEnvironment__wrappee__base() [L433] RET processEnvironment() [L439] CALL __utac_acc__Specification2_spec__2() [L665] int tmp ; [L666] int tmp___0 ; [L670] CALL, EXPR isMethaneLevelCritical() [L878] int retValue_acc ; [L881] retValue_acc = methaneLevelCritical [L882] return (retValue_acc); [L670] RET, EXPR isMethaneLevelCritical() [L670] tmp = isMethaneLevelCritical() [L672] COND TRUE \read(tmp) [L674] CALL, EXPR isPumpRunning() [L505] int retValue_acc ; [L508] retValue_acc = pumpRunning [L509] return (retValue_acc); [L674] RET, EXPR isPumpRunning() [L674] tmp___0 = isPumpRunning() [L676] COND TRUE \read(tmp___0) [L677] COND TRUE \read(methAndRunningLastTime) [L679] CALL __automaton_fail() [L736] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 226 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 32.9s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 26.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 919 SDtfs, 2503 SDslu, 1357 SDs, 0 SdLazy, 5860 SolverSat, 1722 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 377 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 10.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1424occurred 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: 1.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 1961 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 752 NumberOfCodeBlocks, 752 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 614 ConstructedInterpolants, 0 QuantifiedInterpolants, 188498 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...