/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:34:19,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:34:19,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:34:19,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:34:19,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:34:19,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:34:19,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:34:19,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:34:19,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:34:19,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:34:19,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:34:19,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:34:19,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:34:19,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:34:19,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:34:19,775 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:34:19,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:34:19,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:34:19,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:34:19,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:34:19,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:34:19,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:34:19,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:34:19,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:34:19,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:34:19,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:34:19,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:34:19,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:34:19,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:34:19,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:34:19,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:34:19,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:34:19,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:34:19,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:34:19,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:34:19,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:34:19,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:34:19,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:34:19,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:34:19,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:34:19,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:34:19,821 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 [2020-08-19 02:34:19,862 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:34:19,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:34:19,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:34:19,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:34:19,865 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:34:19,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:34:19,866 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:34:19,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:34:19,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:34:19,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:34:19,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:34:19,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:34:19,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:34:19,868 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:34:19,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:34:19,869 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:34:19,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:34:19,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:34:19,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:34:19,869 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:34:19,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:34:19,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:34:19,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:34:19,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:34:19,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:34:19,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:34:19,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:34:19,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:34:19,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:34:19,870 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=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:34:20,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:34:20,205 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:34:20,208 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:34:20,210 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:34:20,212 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:34:20,213 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product42.cil.c [2020-08-19 02:34:20,289 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a99945eac/109aa5f67f544ae88d708ceea5c08f3d/FLAGfb555690f [2020-08-19 02:34:20,811 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:34:20,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product42.cil.c [2020-08-19 02:34:20,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a99945eac/109aa5f67f544ae88d708ceea5c08f3d/FLAGfb555690f [2020-08-19 02:34:21,185 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a99945eac/109aa5f67f544ae88d708ceea5c08f3d [2020-08-19 02:34:21,195 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:34:21,197 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:34:21,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:34:21,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:34:21,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:34:21,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:34:21" (1/1) ... [2020-08-19 02:34:21,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@302e0b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:21, skipping insertion in model container [2020-08-19 02:34:21,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:34:21" (1/1) ... [2020-08-19 02:34:21,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:34:21,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:34:21,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:34:21,687 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:34:21,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:34:21,832 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:34:21,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:21 WrapperNode [2020-08-19 02:34:21,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:34:21,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:34:21,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:34:21,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:34:21,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:21" (1/1) ... [2020-08-19 02:34:21,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:21" (1/1) ... [2020-08-19 02:34:21,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:21" (1/1) ... [2020-08-19 02:34:21,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:21" (1/1) ... [2020-08-19 02:34:21,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:21" (1/1) ... [2020-08-19 02:34:21,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:21" (1/1) ... [2020-08-19 02:34:21,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:21" (1/1) ... [2020-08-19 02:34:21,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:34:21,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:34:21,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:34:21,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:34:21,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:21" (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 [2020-08-19 02:34:22,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:34:22,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:34:22,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 02:34:22,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 02:34:22,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 02:34:22,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 02:34:22,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 02:34:22,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 02:34:22,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 02:34:22,042 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 02:34:22,042 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 02:34:22,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 02:34:22,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 02:34:22,042 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 02:34:22,042 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 02:34:22,043 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 02:34:22,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 02:34:22,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 02:34:22,043 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 02:34:22,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 02:34:22,043 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 02:34:22,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 02:34:22,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 02:34:22,044 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 02:34:22,044 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 02:34:22,044 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 02:34:22,044 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 02:34:22,045 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 02:34:22,045 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 02:34:22,045 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 02:34:22,045 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 02:34:22,045 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:34:22,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 02:34:22,045 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 02:34:22,046 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 02:34:22,046 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 02:34:22,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 02:34:22,046 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 02:34:22,046 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 02:34:22,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 02:34:22,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:34:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:34:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 02:34:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 02:34:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:34:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:34:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 02:34:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:34:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:34:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:34:22,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:34:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 02:34:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:34:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 02:34:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 02:34:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:34:22,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 02:34:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 02:34:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:34:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 02:34:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 02:34:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 02:34:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 02:34:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 02:34:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 02:34:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 02:34:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 02:34:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 02:34:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 02:34:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 02:34:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 02:34:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 02:34:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 02:34:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 02:34:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 02:34:22,051 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 02:34:22,051 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 02:34:22,051 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 02:34:22,051 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 02:34:22,051 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 02:34:22,051 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 02:34:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 02:34:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 02:34:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 02:34:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 02:34:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 02:34:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 02:34:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 02:34:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 02:34:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:34:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 02:34:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:34:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:34:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:34:23,141 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:34:23,142 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 02:34:23,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:34:23 BoogieIcfgContainer [2020-08-19 02:34:23,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:34:23,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:34:23,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:34:23,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:34:23,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:34:21" (1/3) ... [2020-08-19 02:34:23,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661f3b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:34:23, skipping insertion in model container [2020-08-19 02:34:23,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:34:21" (2/3) ... [2020-08-19 02:34:23,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661f3b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:34:23, skipping insertion in model container [2020-08-19 02:34:23,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:34:23" (3/3) ... [2020-08-19 02:34:23,156 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product42.cil.c [2020-08-19 02:34:23,166 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:34:23,174 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:34:23,188 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:34:23,212 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:34:23,212 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:34:23,212 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:34:23,212 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:34:23,213 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:34:23,213 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:34:23,213 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:34:23,213 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:34:23,235 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-19 02:34:23,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 02:34:23,245 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:23,246 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] [2020-08-19 02:34:23,246 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:23,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:23,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1331255295, now seen corresponding path program 1 times [2020-08-19 02:34:23,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:23,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105434173] [2020-08-19 02:34:23,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:23,966 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:23,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:24,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:24,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:24,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:24,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:24,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:24,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:34:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:24,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 02:34:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:24,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:24,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105434173] [2020-08-19 02:34:24,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:24,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:34:24,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455674908] [2020-08-19 02:34:24,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:34:24,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:24,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:34:24,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:34:24,102 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-19 02:34:25,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:25,194 INFO L93 Difference]: Finished difference Result 284 states and 370 transitions. [2020-08-19 02:34:25,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 02:34:25,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 02:34:25,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:25,210 INFO L225 Difference]: With dead ends: 284 [2020-08-19 02:34:25,211 INFO L226 Difference]: Without dead ends: 159 [2020-08-19 02:34:25,215 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 [2020-08-19 02:34:25,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-08-19 02:34:25,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 126. [2020-08-19 02:34:25,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-19 02:34:25,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2020-08-19 02:34:25,320 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 51 [2020-08-19 02:34:25,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:25,321 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2020-08-19 02:34:25,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:34:25,321 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2020-08-19 02:34:25,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 02:34:25,324 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:25,325 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] [2020-08-19 02:34:25,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:34:25,325 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:25,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:25,326 INFO L82 PathProgramCache]: Analyzing trace with hash -42152189, now seen corresponding path program 1 times [2020-08-19 02:34:25,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:25,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125613582] [2020-08-19 02:34:25,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:25,681 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:25,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:25,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:25,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:25,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:25,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:25,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:25,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:34:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:25,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:34:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:25,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:25,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125613582] [2020-08-19 02:34:25,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:25,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:34:25,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682607694] [2020-08-19 02:34:25,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:34:25,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:25,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:34:25,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:34:25,752 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand 5 states. [2020-08-19 02:34:26,278 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:27,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:27,188 INFO L93 Difference]: Finished difference Result 225 states and 277 transitions. [2020-08-19 02:34:27,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 02:34:27,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 02:34:27,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:27,192 INFO L225 Difference]: With dead ends: 225 [2020-08-19 02:34:27,192 INFO L226 Difference]: Without dead ends: 149 [2020-08-19 02:34:27,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:34:27,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-19 02:34:27,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 117. [2020-08-19 02:34:27,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-19 02:34:27,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2020-08-19 02:34:27,232 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 52 [2020-08-19 02:34:27,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:27,233 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2020-08-19 02:34:27,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:34:27,233 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2020-08-19 02:34:27,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 02:34:27,235 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:27,235 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] [2020-08-19 02:34:27,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:34:27,236 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:27,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:27,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1757460962, now seen corresponding path program 1 times [2020-08-19 02:34:27,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:27,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769256083] [2020-08-19 02:34:27,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:27,555 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:27,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:27,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:27,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:27,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:27,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:27,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:27,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 02:34:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:27,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 02:34:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:27,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:27,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769256083] [2020-08-19 02:34:27,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:27,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:34:27,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332108284] [2020-08-19 02:34:27,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:34:27,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:27,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:34:27,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:34:27,714 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 9 states. [2020-08-19 02:34:28,095 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:28,411 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:28,684 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:28,956 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:30,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:30,163 INFO L93 Difference]: Finished difference Result 238 states and 296 transitions. [2020-08-19 02:34:30,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 02:34:30,164 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-19 02:34:30,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:30,166 INFO L225 Difference]: With dead ends: 238 [2020-08-19 02:34:30,166 INFO L226 Difference]: Without dead ends: 149 [2020-08-19 02:34:30,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:34:30,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-19 02:34:30,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 117. [2020-08-19 02:34:30,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-19 02:34:30,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 134 transitions. [2020-08-19 02:34:30,210 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 134 transitions. Word has length 57 [2020-08-19 02:34:30,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:30,211 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 134 transitions. [2020-08-19 02:34:30,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:34:30,211 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 134 transitions. [2020-08-19 02:34:30,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 02:34:30,213 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:30,214 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] [2020-08-19 02:34:30,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:34:30,214 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:30,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:30,214 INFO L82 PathProgramCache]: Analyzing trace with hash 2060596455, now seen corresponding path program 1 times [2020-08-19 02:34:30,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:30,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591294523] [2020-08-19 02:34:30,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,484 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:30,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:34:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 02:34:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 02:34:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:30,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:30,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591294523] [2020-08-19 02:34:30,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:30,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 02:34:30,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194080761] [2020-08-19 02:34:30,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 02:34:30,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:30,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 02:34:30,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:34:30,628 INFO L87 Difference]: Start difference. First operand 117 states and 134 transitions. Second operand 7 states. [2020-08-19 02:34:31,012 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:32,256 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:32,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:32,904 INFO L93 Difference]: Finished difference Result 328 states and 412 transitions. [2020-08-19 02:34:32,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 02:34:32,906 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-08-19 02:34:32,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:32,910 INFO L225 Difference]: With dead ends: 328 [2020-08-19 02:34:32,910 INFO L226 Difference]: Without dead ends: 239 [2020-08-19 02:34:32,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:34:32,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-08-19 02:34:32,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 190. [2020-08-19 02:34:32,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-19 02:34:32,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 219 transitions. [2020-08-19 02:34:32,962 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 219 transitions. Word has length 65 [2020-08-19 02:34:32,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:32,963 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 219 transitions. [2020-08-19 02:34:32,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 02:34:32,963 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 219 transitions. [2020-08-19 02:34:32,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-19 02:34:32,965 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:32,965 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] [2020-08-19 02:34:32,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:34:32,966 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:32,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:32,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1161742780, now seen corresponding path program 1 times [2020-08-19 02:34:32,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:32,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196133692] [2020-08-19 02:34:32,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,264 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:33,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:33,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:33,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:34:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 02:34:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 02:34:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:33,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196133692] [2020-08-19 02:34:33,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:33,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:34:33,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705959111] [2020-08-19 02:34:33,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:34:33,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:33,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:34:33,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:34:33,424 INFO L87 Difference]: Start difference. First operand 190 states and 219 transitions. Second operand 9 states. [2020-08-19 02:34:33,820 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:34,829 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:35,139 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:35,640 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:35,869 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:36,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:36,771 INFO L93 Difference]: Finished difference Result 566 states and 718 transitions. [2020-08-19 02:34:36,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 02:34:36,772 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-08-19 02:34:36,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:36,776 INFO L225 Difference]: With dead ends: 566 [2020-08-19 02:34:36,776 INFO L226 Difference]: Without dead ends: 404 [2020-08-19 02:34:36,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 02:34:36,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2020-08-19 02:34:36,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 328. [2020-08-19 02:34:36,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-08-19 02:34:36,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 378 transitions. [2020-08-19 02:34:36,867 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 378 transitions. Word has length 79 [2020-08-19 02:34:36,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:36,868 INFO L479 AbstractCegarLoop]: Abstraction has 328 states and 378 transitions. [2020-08-19 02:34:36,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:34:36,868 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 378 transitions. [2020-08-19 02:34:36,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 02:34:36,870 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:36,870 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] [2020-08-19 02:34:36,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:34:36,871 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:36,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:36,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1027537504, now seen corresponding path program 1 times [2020-08-19 02:34:36,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:36,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61153121] [2020-08-19 02:34:36,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:36,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,184 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:37,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:34:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:34:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-19 02:34:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 02:34:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:37,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:34:37,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61153121] [2020-08-19 02:34:37,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:37,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 02:34:37,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335912873] [2020-08-19 02:34:37,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:34:37,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:37,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:34:37,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:34:37,291 INFO L87 Difference]: Start difference. First operand 328 states and 378 transitions. Second operand 10 states. [2020-08-19 02:34:37,747 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:38,905 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:39,883 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:40,127 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:40,387 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:40,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:40,762 INFO L93 Difference]: Finished difference Result 742 states and 925 transitions. [2020-08-19 02:34:40,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 02:34:40,763 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-08-19 02:34:40,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:40,768 INFO L225 Difference]: With dead ends: 742 [2020-08-19 02:34:40,768 INFO L226 Difference]: Without dead ends: 442 [2020-08-19 02:34:40,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2020-08-19 02:34:40,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-08-19 02:34:40,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 327. [2020-08-19 02:34:40,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-08-19 02:34:40,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 375 transitions. [2020-08-19 02:34:40,843 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 375 transitions. Word has length 83 [2020-08-19 02:34:40,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:40,843 INFO L479 AbstractCegarLoop]: Abstraction has 327 states and 375 transitions. [2020-08-19 02:34:40,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:34:40,844 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 375 transitions. [2020-08-19 02:34:40,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-19 02:34:40,845 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:40,845 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:34:40,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:34:40,846 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:40,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:40,846 INFO L82 PathProgramCache]: Analyzing trace with hash 928544888, now seen corresponding path program 1 times [2020-08-19 02:34:40,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:40,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172108771] [2020-08-19 02:34:40,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,105 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:41,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:34:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:34:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 02:34:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 02:34:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:41,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:34:41,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172108771] [2020-08-19 02:34:41,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:41,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 02:34:41,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689687357] [2020-08-19 02:34:41,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:34:41,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:41,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:34:41,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:34:41,297 INFO L87 Difference]: Start difference. First operand 327 states and 375 transitions. Second operand 10 states. [2020-08-19 02:34:42,222 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:34:42,492 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:34:42,728 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:42,962 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:43,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:43,846 INFO L93 Difference]: Finished difference Result 749 states and 953 transitions. [2020-08-19 02:34:43,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 02:34:43,847 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 99 [2020-08-19 02:34:43,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:43,851 INFO L225 Difference]: With dead ends: 749 [2020-08-19 02:34:43,852 INFO L226 Difference]: Without dead ends: 450 [2020-08-19 02:34:43,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:34:43,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-08-19 02:34:43,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 337. [2020-08-19 02:34:43,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-08-19 02:34:43,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 385 transitions. [2020-08-19 02:34:43,925 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 385 transitions. Word has length 99 [2020-08-19 02:34:43,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:43,926 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 385 transitions. [2020-08-19 02:34:43,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:34:43,926 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 385 transitions. [2020-08-19 02:34:43,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-19 02:34:43,928 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:43,928 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:34:43,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:34:43,929 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:43,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:43,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1120842954, now seen corresponding path program 1 times [2020-08-19 02:34:43,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:43,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676917692] [2020-08-19 02:34:43,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,194 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:44,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:44,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:34:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:34:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 02:34:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 02:34:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:44,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:34:44,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676917692] [2020-08-19 02:34:44,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:44,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 02:34:44,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35487596] [2020-08-19 02:34:44,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:34:44,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:44,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:34:44,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:34:44,358 INFO L87 Difference]: Start difference. First operand 337 states and 385 transitions. Second operand 12 states. [2020-08-19 02:34:45,102 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:45,330 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:45,547 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:46,191 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:46,440 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:46,676 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:34:47,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:47,806 INFO L93 Difference]: Finished difference Result 769 states and 975 transitions. [2020-08-19 02:34:47,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 02:34:47,807 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2020-08-19 02:34:47,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:47,811 INFO L225 Difference]: With dead ends: 769 [2020-08-19 02:34:47,811 INFO L226 Difference]: Without dead ends: 460 [2020-08-19 02:34:47,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 02:34:47,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-08-19 02:34:47,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 345. [2020-08-19 02:34:47,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-08-19 02:34:47,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 393 transitions. [2020-08-19 02:34:47,885 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 393 transitions. Word has length 99 [2020-08-19 02:34:47,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:47,885 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 393 transitions. [2020-08-19 02:34:47,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:34:47,886 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 393 transitions. [2020-08-19 02:34:47,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-19 02:34:47,887 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:47,888 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:34:47,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:34:47,888 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:47,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:47,889 INFO L82 PathProgramCache]: Analyzing trace with hash -151261931, now seen corresponding path program 1 times [2020-08-19 02:34:47,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:47,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486731020] [2020-08-19 02:34:47,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:48,159 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:48,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:48,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:48,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:48,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:48,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:48,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:48,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:34:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:48,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:34:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:48,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:48,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:48,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:48,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:48,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:48,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:48,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 02:34:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:48,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 02:34:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:48,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:34:48,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486731020] [2020-08-19 02:34:48,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:34:48,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:34:48,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215293275] [2020-08-19 02:34:48,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:34:48,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:48,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:34:48,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:34:48,291 INFO L87 Difference]: Start difference. First operand 345 states and 393 transitions. Second operand 8 states. [2020-08-19 02:34:48,655 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:49,195 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:51,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:34:51,326 INFO L93 Difference]: Finished difference Result 1097 states and 1430 transitions. [2020-08-19 02:34:51,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 02:34:51,327 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-08-19 02:34:51,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:34:51,333 INFO L225 Difference]: With dead ends: 1097 [2020-08-19 02:34:51,334 INFO L226 Difference]: Without dead ends: 780 [2020-08-19 02:34:51,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-08-19 02:34:51,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2020-08-19 02:34:51,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 635. [2020-08-19 02:34:51,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2020-08-19 02:34:51,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 745 transitions. [2020-08-19 02:34:51,545 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 745 transitions. Word has length 99 [2020-08-19 02:34:51,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:34:51,546 INFO L479 AbstractCegarLoop]: Abstraction has 635 states and 745 transitions. [2020-08-19 02:34:51,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:34:51,547 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 745 transitions. [2020-08-19 02:34:51,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-19 02:34:51,549 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:34:51,550 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:34:51,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:34:51,550 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:34:51,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:34:51,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1889082245, now seen corresponding path program 1 times [2020-08-19 02:34:51,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:34:51,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054004780] [2020-08-19 02:34:51,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:34:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:51,911 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:34:51,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:34:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:51,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:34:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:51,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:34:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:51,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:51,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:34:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:51,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:34:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:51,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:34:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:51,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:34:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:52,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 02:34:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:52,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:34:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:52,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:52,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:34:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:52,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:52,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:34:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:52,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:34:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:52,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 02:34:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:52,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 02:34:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:34:52,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 02:34:52,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054004780] [2020-08-19 02:34:52,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:34:52,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-19 02:34:52,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757020400] [2020-08-19 02:34:52,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-19 02:34:52,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:34:52,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-19 02:34:52,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:34:52,255 INFO L87 Difference]: Start difference. First operand 635 states and 745 transitions. Second operand 18 states. [2020-08-19 02:34:53,077 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:53,555 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:34:53,846 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:34:54,102 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:34:54,809 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:34:55,802 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:34:56,144 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:34:56,429 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:34:56,681 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:34:57,027 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:34:57,326 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:34:57,925 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-19 02:34:58,518 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-19 02:35:00,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:00,432 INFO L93 Difference]: Finished difference Result 1355 states and 1681 transitions. [2020-08-19 02:35:00,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-19 02:35:00,432 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 103 [2020-08-19 02:35:00,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:00,437 INFO L225 Difference]: With dead ends: 1355 [2020-08-19 02:35:00,437 INFO L226 Difference]: Without dead ends: 748 [2020-08-19 02:35:00,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=474, Invalid=1878, Unknown=0, NotChecked=0, Total=2352 [2020-08-19 02:35:00,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-08-19 02:35:00,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 612. [2020-08-19 02:35:00,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2020-08-19 02:35:00,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 706 transitions. [2020-08-19 02:35:00,578 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 706 transitions. Word has length 103 [2020-08-19 02:35:00,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:00,578 INFO L479 AbstractCegarLoop]: Abstraction has 612 states and 706 transitions. [2020-08-19 02:35:00,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-19 02:35:00,579 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 706 transitions. [2020-08-19 02:35:00,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-19 02:35:00,581 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:00,582 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:35:00,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:35:00,583 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:00,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:00,583 INFO L82 PathProgramCache]: Analyzing trace with hash -75649928, now seen corresponding path program 1 times [2020-08-19 02:35:00,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:00,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684408734] [2020-08-19 02:35:00,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:00,926 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:00,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:00,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:00,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:00,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:00,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:00,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:00,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:35:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:35:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:35:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:35:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 02:35:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 02:35:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 02:35:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-19 02:35:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-19 02:35:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:01,115 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 02:35:01,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684408734] [2020-08-19 02:35:01,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:35:01,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 02:35:01,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002925496] [2020-08-19 02:35:01,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:35:01,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:01,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:35:01,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:35:01,122 INFO L87 Difference]: Start difference. First operand 612 states and 706 transitions. Second operand 9 states. [2020-08-19 02:35:01,444 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:03,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:03,516 INFO L93 Difference]: Finished difference Result 1176 states and 1496 transitions. [2020-08-19 02:35:03,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 02:35:03,517 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 139 [2020-08-19 02:35:03,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:03,524 INFO L225 Difference]: With dead ends: 1176 [2020-08-19 02:35:03,525 INFO L226 Difference]: Without dead ends: 1173 [2020-08-19 02:35:03,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2020-08-19 02:35:03,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2020-08-19 02:35:03,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 957. [2020-08-19 02:35:03,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2020-08-19 02:35:03,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1109 transitions. [2020-08-19 02:35:03,703 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1109 transitions. Word has length 139 [2020-08-19 02:35:03,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:03,706 INFO L479 AbstractCegarLoop]: Abstraction has 957 states and 1109 transitions. [2020-08-19 02:35:03,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:35:03,706 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1109 transitions. [2020-08-19 02:35:03,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-08-19 02:35:03,710 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:03,711 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-19 02:35:03,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 02:35:03,711 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:03,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:03,712 INFO L82 PathProgramCache]: Analyzing trace with hash -397466106, now seen corresponding path program 1 times [2020-08-19 02:35:03,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:03,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354868860] [2020-08-19 02:35:03,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,035 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:04,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:35:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:35:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:35:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:35:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:35:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 02:35:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 02:35:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 02:35:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:35:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:35:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-19 02:35:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-19 02:35:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-19 02:35:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:35:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-08-19 02:35:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 02:35:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:04,366 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 37 proven. 18 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-08-19 02:35:04,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354868860] [2020-08-19 02:35:04,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:35:04,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 02:35:04,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200266477] [2020-08-19 02:35:04,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 02:35:04,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:04,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 02:35:04,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-08-19 02:35:04,369 INFO L87 Difference]: Start difference. First operand 957 states and 1109 transitions. Second operand 13 states. [2020-08-19 02:35:04,810 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:05,388 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:05,977 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:35:07,187 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:35:08,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:08,549 INFO L93 Difference]: Finished difference Result 1988 states and 2473 transitions. [2020-08-19 02:35:08,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-19 02:35:08,556 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 186 [2020-08-19 02:35:08,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:08,563 INFO L225 Difference]: With dead ends: 1988 [2020-08-19 02:35:08,563 INFO L226 Difference]: Without dead ends: 1181 [2020-08-19 02:35:08,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=335, Invalid=997, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 02:35:08,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2020-08-19 02:35:08,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1012. [2020-08-19 02:35:08,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1012 states. [2020-08-19 02:35:08,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1178 transitions. [2020-08-19 02:35:08,816 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1178 transitions. Word has length 186 [2020-08-19 02:35:08,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:08,817 INFO L479 AbstractCegarLoop]: Abstraction has 1012 states and 1178 transitions. [2020-08-19 02:35:08,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 02:35:08,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1178 transitions. [2020-08-19 02:35:08,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-08-19 02:35:08,824 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:08,825 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-19 02:35:08,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 02:35:08,826 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:08,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:08,826 INFO L82 PathProgramCache]: Analyzing trace with hash 974341192, now seen corresponding path program 1 times [2020-08-19 02:35:08,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:08,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408272163] [2020-08-19 02:35:08,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 02:35:08,917 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 02:35:08,917 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 02:35:08,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 02:35:08,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:35:08 BoogieIcfgContainer [2020-08-19 02:35:08,975 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:35:08,977 INFO L168 Benchmark]: Toolchain (without parser) took 47779.87 ms. Allocated memory was 139.5 MB in the beginning and 734.0 MB in the end (delta: 594.5 MB). Free memory was 101.2 MB in the beginning and 425.6 MB in the end (delta: -324.4 MB). Peak memory consumption was 270.1 MB. Max. memory is 7.1 GB. [2020-08-19 02:35:08,978 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 02:35:08,979 INFO L168 Benchmark]: CACSL2BoogieTranslator took 636.43 ms. Allocated memory was 139.5 MB in the beginning and 200.8 MB in the end (delta: 61.3 MB). Free memory was 101.0 MB in the beginning and 167.9 MB in the end (delta: -66.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-08-19 02:35:08,980 INFO L168 Benchmark]: Boogie Preprocessor took 145.29 ms. Allocated memory is still 200.8 MB. Free memory was 167.9 MB in the beginning and 161.9 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 7.1 GB. [2020-08-19 02:35:08,983 INFO L168 Benchmark]: RCFGBuilder took 1166.88 ms. Allocated memory was 200.8 MB in the beginning and 233.8 MB in the end (delta: 33.0 MB). Free memory was 161.9 MB in the beginning and 190.3 MB in the end (delta: -28.3 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. [2020-08-19 02:35:08,985 INFO L168 Benchmark]: TraceAbstraction took 45826.14 ms. Allocated memory was 233.8 MB in the beginning and 734.0 MB in the end (delta: 500.2 MB). Free memory was 190.3 MB in the beginning and 425.6 MB in the end (delta: -235.4 MB). Peak memory consumption was 264.8 MB. Max. memory is 7.1 GB. [2020-08-19 02:35:08,989 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 636.43 ms. Allocated memory was 139.5 MB in the beginning and 200.8 MB in the end (delta: 61.3 MB). Free memory was 101.0 MB in the beginning and 167.9 MB in the end (delta: -66.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 145.29 ms. Allocated memory is still 200.8 MB. Free memory was 167.9 MB in the beginning and 161.9 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1166.88 ms. Allocated memory was 200.8 MB in the beginning and 233.8 MB in the end (delta: 33.0 MB). Free memory was 161.9 MB in the beginning and 190.3 MB in the end (delta: -28.3 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 45826.14 ms. Allocated memory was 233.8 MB in the beginning and 734.0 MB in the end (delta: 500.2 MB). Free memory was 190.3 MB in the beginning and 425.6 MB in the end (delta: -235.4 MB). Peak memory consumption was 264.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 844]: 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; [L486] int pumpRunning = 0; [L487] int systemActive = 1; [L666] int methAndRunningLastTime ; [L743] int cleanupTimeShifts = 4; [L850] int waterLevel = 1; [L851] int methaneLevelCritical = 0; [L817] int retValue_acc ; [L818] int tmp ; [L822] FCALL select_helpers() [L823] FCALL select_features() [L824] CALL, EXPR valid_product() [L734] int retValue_acc ; [L737] retValue_acc = 1 [L738] return (retValue_acc); [L824] RET, EXPR valid_product() [L824] tmp = valid_product() [L826] COND TRUE \read(tmp) [L828] FCALL setup() [L829] CALL runTest() [L810] CALL __utac_acc__Specification2_spec__1() [L671] methAndRunningLastTime = 0 [L810] RET __utac_acc__Specification2_spec__1() [L811] CALL test() [L412] int splverifierCounter ; [L413] int tmp ; [L414] int tmp___0 ; [L415] int tmp___1 ; [L416] int tmp___2 ; [L419] splverifierCounter = 0 [L421] COND TRUE 1 [L423] COND TRUE splverifierCounter < 4 [L429] tmp = __VERIFIER_nondet_int() [L431] COND TRUE \read(tmp) [L433] CALL waterRise() [L868] COND TRUE waterLevel < 2 [L869] waterLevel = waterLevel + 1 [L433] RET waterRise() [L439] tmp___0 = __VERIFIER_nondet_int() [L441] COND FALSE !(\read(tmp___0)) [L449] tmp___2 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___2)) [L457] tmp___1 = __VERIFIER_nondet_int() [L459] COND TRUE \read(tmp___1) [L466] CALL timeShift() [L494] COND FALSE !(\read(pumpRunning)) [L501] COND TRUE \read(systemActive) [L503] CALL processEnvironment() [L523] int tmp ; [L526] COND TRUE ! pumpRunning [L528] CALL, EXPR isHighWaterLevel() [L638] int retValue_acc ; [L639] int tmp ; [L640] int tmp___0 ; [L644] CALL, EXPR isHighWaterSensorDry() [L930] int retValue_acc ; [L933] COND FALSE !(waterLevel < 2) [L937] retValue_acc = 0 [L938] return (retValue_acc); [L644] RET, EXPR isHighWaterSensorDry() [L644] tmp = isHighWaterSensorDry() [L646] COND FALSE !(\read(tmp)) [L649] tmp___0 = 1 [L651] retValue_acc = tmp___0 [L652] return (retValue_acc); [L528] RET, EXPR isHighWaterLevel() [L528] tmp = isHighWaterLevel() [L530] COND TRUE \read(tmp) [L532] CALL activatePump() [L557] int tmp ; [L561] CALL, EXPR isMethaneAlarm() [L582] int retValue_acc ; [L586] CALL, EXPR isMethaneLevelCritical() [L889] int retValue_acc ; [L892] retValue_acc = methaneLevelCritical [L893] return (retValue_acc); [L586] RET, EXPR isMethaneLevelCritical() [L586] retValue_acc = isMethaneLevelCritical() [L588] return (retValue_acc); [L561] RET, EXPR isMethaneAlarm() [L561] tmp = isMethaneAlarm() [L563] COND FALSE !(\read(tmp)) [L567] CALL activatePump__wrappee__highWaterSensor() [L551] pumpRunning = 1 [L567] RET activatePump__wrappee__highWaterSensor() [L532] RET activatePump() [L503] RET processEnvironment() [L509] CALL __utac_acc__Specification2_spec__2() [L676] int tmp ; [L677] int tmp___0 ; [L681] CALL, EXPR isMethaneLevelCritical() [L889] int retValue_acc ; [L892] retValue_acc = methaneLevelCritical [L893] return (retValue_acc); [L681] RET, EXPR isMethaneLevelCritical() [L681] tmp = isMethaneLevelCritical() [L683] COND FALSE !(\read(tmp)) [L699] methAndRunningLastTime = 0 [L509] RET __utac_acc__Specification2_spec__2() [L466] RET timeShift() [L421] COND TRUE 1 [L423] COND TRUE splverifierCounter < 4 [L429] tmp = __VERIFIER_nondet_int() [L431] COND FALSE !(\read(tmp)) [L439] tmp___0 = __VERIFIER_nondet_int() [L441] COND TRUE \read(tmp___0) [L443] CALL changeMethaneLevel() [L880] COND FALSE !(\read(methaneLevelCritical)) [L883] methaneLevelCritical = 1 [L443] RET changeMethaneLevel() [L449] tmp___2 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___2)) [L457] tmp___1 = __VERIFIER_nondet_int() [L459] COND TRUE \read(tmp___1) [L466] CALL timeShift() [L494] COND TRUE \read(pumpRunning) [L496] CALL lowerWaterLevel() [L856] COND TRUE waterLevel > 0 [L857] waterLevel = waterLevel - 1 [L496] RET lowerWaterLevel() [L501] COND TRUE \read(systemActive) [L503] CALL processEnvironment() [L523] int tmp ; [L526] COND FALSE !(! pumpRunning) [L541] FCALL processEnvironment__wrappee__base() [L503] RET processEnvironment() [L509] CALL __utac_acc__Specification2_spec__2() [L676] int tmp ; [L677] int tmp___0 ; [L681] CALL, EXPR isMethaneLevelCritical() [L889] int retValue_acc ; [L892] retValue_acc = methaneLevelCritical [L893] return (retValue_acc); [L681] RET, EXPR isMethaneLevelCritical() [L681] tmp = isMethaneLevelCritical() [L683] COND TRUE \read(tmp) [L685] CALL, EXPR isPumpRunning() [L593] int retValue_acc ; [L596] retValue_acc = pumpRunning [L597] return (retValue_acc); [L685] RET, EXPR isPumpRunning() [L685] tmp___0 = isPumpRunning() [L687] COND TRUE \read(tmp___0) [L688] COND FALSE !(\read(methAndRunningLastTime)) [L693] methAndRunningLastTime = 1 [L509] RET __utac_acc__Specification2_spec__2() [L466] RET timeShift() [L421] COND TRUE 1 [L423] COND TRUE splverifierCounter < 4 [L429] tmp = __VERIFIER_nondet_int() [L431] COND TRUE \read(tmp) [L433] CALL waterRise() [L868] COND TRUE waterLevel < 2 [L869] waterLevel = waterLevel + 1 [L433] RET waterRise() [L439] tmp___0 = __VERIFIER_nondet_int() [L441] COND FALSE !(\read(tmp___0)) [L449] tmp___2 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___2)) [L457] tmp___1 = __VERIFIER_nondet_int() [L459] COND TRUE \read(tmp___1) [L466] CALL timeShift() [L494] COND TRUE \read(pumpRunning) [L496] CALL lowerWaterLevel() [L856] COND TRUE waterLevel > 0 [L857] waterLevel = waterLevel - 1 [L496] RET lowerWaterLevel() [L501] COND TRUE \read(systemActive) [L503] CALL processEnvironment() [L523] int tmp ; [L526] COND FALSE !(! pumpRunning) [L541] FCALL processEnvironment__wrappee__base() [L503] RET processEnvironment() [L509] CALL __utac_acc__Specification2_spec__2() [L676] int tmp ; [L677] int tmp___0 ; [L681] CALL, EXPR isMethaneLevelCritical() [L889] int retValue_acc ; [L892] retValue_acc = methaneLevelCritical [L893] return (retValue_acc); [L681] RET, EXPR isMethaneLevelCritical() [L681] tmp = isMethaneLevelCritical() [L683] COND TRUE \read(tmp) [L685] CALL, EXPR isPumpRunning() [L593] int retValue_acc ; [L596] retValue_acc = pumpRunning [L597] return (retValue_acc); [L685] RET, EXPR isPumpRunning() [L685] tmp___0 = isPumpRunning() [L687] COND TRUE \read(tmp___0) [L688] COND TRUE \read(methAndRunningLastTime) [L690] CALL __automaton_fail() [L844] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 45.7s, OverallIterations: 13, TraceHistogramMax: 4, AutomataDifference: 37.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1441 SDtfs, 3981 SDslu, 1928 SDs, 0 SdLazy, 9193 SolverSat, 2823 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 653 GetRequests, 412 SyntacticMatches, 6 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1470 ImplicationChecksByTransitivity, 16.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1012occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 1231 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 1298 NumberOfCodeBlocks, 1298 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1100 ConstructedInterpolants, 0 QuantifiedInterpolants, 414654 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 127/149 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...