/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 05:20:31,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:20:31,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:20:31,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:20:31,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:20:31,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:20:31,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:20:31,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:20:31,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:20:31,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:20:31,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:20:31,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:20:31,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:20:31,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:20:31,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:20:31,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:20:31,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:20:31,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:20:31,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:20:31,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:20:31,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:20:31,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:20:31,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:20:31,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:20:31,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:20:31,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:20:31,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:20:31,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:20:31,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:20:31,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:20:31,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:20:31,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:20:31,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:20:31,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:20:31,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:20:31,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:20:31,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:20:31,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:20:31,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:20:31,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:20:32,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:20:32,000 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 05:20:32,021 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:20:32,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:20:32,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:20:32,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:20:32,024 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:20:32,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:20:32,024 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:20:32,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:20:32,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:20:32,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:20:32,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:20:32,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:20:32,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:20:32,025 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:20:32,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:20:32,026 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:20:32,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:20:32,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:20:32,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:20:32,027 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:20:32,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:20:32,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:20:32,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:20:32,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:20:32,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:20:32,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:20:32,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:20:32,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:20:32,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:20:32,029 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:20:32,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:20:32,346 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:20:32,349 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:20:32,351 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:20:32,351 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:20:32,352 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-08-22 05:20:32,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07c490c1a/57b075c091154491ab54d231a9ffb4c3/FLAG687d33a6e [2020-08-22 05:20:32,979 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:20:32,980 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-08-22 05:20:32,993 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07c490c1a/57b075c091154491ab54d231a9ffb4c3/FLAG687d33a6e [2020-08-22 05:20:33,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07c490c1a/57b075c091154491ab54d231a9ffb4c3 [2020-08-22 05:20:33,264 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:20:33,265 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:20:33,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:20:33,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:20:33,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:20:33,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:20:33" (1/1) ... [2020-08-22 05:20:33,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4576fe6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:33, skipping insertion in model container [2020-08-22 05:20:33,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:20:33" (1/1) ... [2020-08-22 05:20:33,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:20:33,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:20:33,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:20:33,832 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:20:33,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:20:33,958 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:20:33,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:33 WrapperNode [2020-08-22 05:20:33,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:20:33,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:20:33,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:20:33,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:20:33,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:33" (1/1) ... [2020-08-22 05:20:33,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:33" (1/1) ... [2020-08-22 05:20:33,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:33" (1/1) ... [2020-08-22 05:20:33,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:33" (1/1) ... [2020-08-22 05:20:34,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:33" (1/1) ... [2020-08-22 05:20:34,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:33" (1/1) ... [2020-08-22 05:20:34,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:33" (1/1) ... [2020-08-22 05:20:34,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:20:34,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:20:34,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:20:34,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:20:34,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:20:34,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:20:34,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:20:34,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 05:20:34,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 05:20:34,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 05:20:34,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 05:20:34,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 05:20:34,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 05:20:34,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 05:20:34,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 05:20:34,113 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 05:20:34,113 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 05:20:34,113 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 05:20:34,113 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 05:20:34,114 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 05:20:34,114 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 05:20:34,114 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 05:20:34,114 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 05:20:34,114 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 05:20:34,114 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 05:20:34,114 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 05:20:34,115 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 05:20:34,115 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 05:20:34,115 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 05:20:34,115 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 05:20:34,115 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 05:20:34,115 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 05:20:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 05:20:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 05:20:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 05:20:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 05:20:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 05:20:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:20:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 05:20:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 05:20:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 05:20:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 05:20:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 05:20:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 05:20:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 05:20:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:20:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:20:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 05:20:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 05:20:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 05:20:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 05:20:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 05:20:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 05:20:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:20:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:20:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 05:20:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:20:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:20:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:20:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:20:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 05:20:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:20:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 05:20:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 05:20:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:20:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 05:20:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 05:20:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:20:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 05:20:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 05:20:34,121 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 05:20:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 05:20:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 05:20:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 05:20:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 05:20:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 05:20:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 05:20:34,122 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 05:20:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 05:20:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 05:20:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 05:20:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 05:20:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 05:20:34,123 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 05:20:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 05:20:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 05:20:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 05:20:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 05:20:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 05:20:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 05:20:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 05:20:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 05:20:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 05:20:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 05:20:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 05:20:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:20:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:20:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 05:20:34,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:20:35,186 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:20:35,187 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 05:20:35,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:20:35 BoogieIcfgContainer [2020-08-22 05:20:35,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:20:35,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:20:35,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:20:35,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:20:35,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:20:33" (1/3) ... [2020-08-22 05:20:35,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ea30081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:20:35, skipping insertion in model container [2020-08-22 05:20:35,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:33" (2/3) ... [2020-08-22 05:20:35,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ea30081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:20:35, skipping insertion in model container [2020-08-22 05:20:35,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:20:35" (3/3) ... [2020-08-22 05:20:35,200 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product44.cil.c [2020-08-22 05:20:35,211 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:20:35,219 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:20:35,231 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:20:35,252 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:20:35,252 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:20:35,252 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:20:35,252 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:20:35,252 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:20:35,253 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:20:35,253 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:20:35,253 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:20:35,275 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-08-22 05:20:35,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 05:20:35,285 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:35,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:20:35,287 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:35,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:35,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1915366745, now seen corresponding path program 1 times [2020-08-22 05:20:35,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:35,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371883976] [2020-08-22 05:20:35,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,973 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:35,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:36,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:36,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:36,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:36,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:36,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:20:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:36,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:20:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:36,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:20:36,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371883976] [2020-08-22 05:20:36,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:20:36,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 05:20:36,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329697928] [2020-08-22 05:20:36,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 05:20:36,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:36,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 05:20:36,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:20:36,098 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2020-08-22 05:20:37,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:37,265 INFO L93 Difference]: Finished difference Result 310 states and 398 transitions. [2020-08-22 05:20:37,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 05:20:37,267 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 05:20:37,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:37,282 INFO L225 Difference]: With dead ends: 310 [2020-08-22 05:20:37,283 INFO L226 Difference]: Without dead ends: 168 [2020-08-22 05:20:37,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:20:37,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-22 05:20:37,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 133. [2020-08-22 05:20:37,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-22 05:20:37,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 153 transitions. [2020-08-22 05:20:37,394 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 153 transitions. Word has length 46 [2020-08-22 05:20:37,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:37,395 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 153 transitions. [2020-08-22 05:20:37,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 05:20:37,396 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 153 transitions. [2020-08-22 05:20:37,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 05:20:37,401 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:37,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:20:37,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:20:37,402 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:37,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:37,402 INFO L82 PathProgramCache]: Analyzing trace with hash -868486899, now seen corresponding path program 1 times [2020-08-22 05:20:37,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:37,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418362556] [2020-08-22 05:20:37,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,801 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:37,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:20:37,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:20:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:20:37,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418362556] [2020-08-22 05:20:37,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:20:37,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:20:37,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056968724] [2020-08-22 05:20:37,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:20:37,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:37,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:20:37,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:20:37,874 INFO L87 Difference]: Start difference. First operand 133 states and 153 transitions. Second operand 4 states. [2020-08-22 05:20:38,260 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:39,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:39,046 INFO L93 Difference]: Finished difference Result 230 states and 275 transitions. [2020-08-22 05:20:39,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:20:39,050 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 05:20:39,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:39,053 INFO L225 Difference]: With dead ends: 230 [2020-08-22 05:20:39,053 INFO L226 Difference]: Without dead ends: 152 [2020-08-22 05:20:39,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:20:39,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-22 05:20:39,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 124. [2020-08-22 05:20:39,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-22 05:20:39,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 141 transitions. [2020-08-22 05:20:39,095 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 141 transitions. Word has length 47 [2020-08-22 05:20:39,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:39,095 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 141 transitions. [2020-08-22 05:20:39,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:20:39,095 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 141 transitions. [2020-08-22 05:20:39,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 05:20:39,097 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:39,098 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] [2020-08-22 05:20:39,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:20:39,098 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:39,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:39,098 INFO L82 PathProgramCache]: Analyzing trace with hash -905097918, now seen corresponding path program 1 times [2020-08-22 05:20:39,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:39,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366574476] [2020-08-22 05:20:39,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,411 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:39,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:20:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 05:20:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:20:39,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366574476] [2020-08-22 05:20:39,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:20:39,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:20:39,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26175312] [2020-08-22 05:20:39,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:20:39,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:39,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:20:39,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:20:39,525 INFO L87 Difference]: Start difference. First operand 124 states and 141 transitions. Second operand 8 states. [2020-08-22 05:20:39,898 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:40,207 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:40,486 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:40,723 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:41,472 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:43,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:43,079 INFO L93 Difference]: Finished difference Result 427 states and 518 transitions. [2020-08-22 05:20:43,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 05:20:43,080 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-22 05:20:43,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:43,089 INFO L225 Difference]: With dead ends: 427 [2020-08-22 05:20:43,090 INFO L226 Difference]: Without dead ends: 327 [2020-08-22 05:20:43,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 05:20:43,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-08-22 05:20:43,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 250. [2020-08-22 05:20:43,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-08-22 05:20:43,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 294 transitions. [2020-08-22 05:20:43,175 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 294 transitions. Word has length 52 [2020-08-22 05:20:43,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:43,176 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 294 transitions. [2020-08-22 05:20:43,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:20:43,176 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 294 transitions. [2020-08-22 05:20:43,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 05:20:43,178 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:43,178 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] [2020-08-22 05:20:43,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:20:43,179 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:43,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:43,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1583600214, now seen corresponding path program 1 times [2020-08-22 05:20:43,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:43,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300022949] [2020-08-22 05:20:43,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:43,460 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:43,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:43,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:43,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:43,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:43,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:43,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:20:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:43,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 05:20:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:43,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 05:20:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:43,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:20:43,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300022949] [2020-08-22 05:20:43,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:20:43,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 05:20:43,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456504080] [2020-08-22 05:20:43,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 05:20:43,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:43,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 05:20:43,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:20:43,583 INFO L87 Difference]: Start difference. First operand 250 states and 294 transitions. Second operand 12 states. [2020-08-22 05:20:43,955 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:44,253 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:44,497 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:44,755 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:45,339 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:46,079 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:46,475 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:46,745 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:47,054 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:47,320 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:20:47,738 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:48,013 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:48,236 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:49,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:49,780 INFO L93 Difference]: Finished difference Result 1013 states and 1362 transitions. [2020-08-22 05:20:49,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 05:20:49,780 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-22 05:20:49,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:49,792 INFO L225 Difference]: With dead ends: 1013 [2020-08-22 05:20:49,792 INFO L226 Difference]: Without dead ends: 787 [2020-08-22 05:20:49,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 05:20:49,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-08-22 05:20:49,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 690. [2020-08-22 05:20:49,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-08-22 05:20:49,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 848 transitions. [2020-08-22 05:20:49,949 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 848 transitions. Word has length 57 [2020-08-22 05:20:49,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:49,950 INFO L479 AbstractCegarLoop]: Abstraction has 690 states and 848 transitions. [2020-08-22 05:20:49,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 05:20:49,950 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 848 transitions. [2020-08-22 05:20:49,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 05:20:49,957 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:49,958 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] [2020-08-22 05:20:49,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:20:49,958 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:49,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:49,959 INFO L82 PathProgramCache]: Analyzing trace with hash -436303684, now seen corresponding path program 1 times [2020-08-22 05:20:49,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:49,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134272783] [2020-08-22 05:20:49,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:50,286 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:50,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:50,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:50,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:50,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:50,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:50,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:20:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:50,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 05:20:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:50,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 05:20:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:50,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 05:20:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:50,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:20:50,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134272783] [2020-08-22 05:20:50,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:20:50,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:20:50,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623439386] [2020-08-22 05:20:50,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:20:50,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:50,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:20:50,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:20:50,408 INFO L87 Difference]: Start difference. First operand 690 states and 848 transitions. Second operand 6 states. [2020-08-22 05:20:50,742 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:52,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:52,405 INFO L93 Difference]: Finished difference Result 1681 states and 2195 transitions. [2020-08-22 05:20:52,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 05:20:52,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 05:20:52,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:52,414 INFO L225 Difference]: With dead ends: 1681 [2020-08-22 05:20:52,415 INFO L226 Difference]: Without dead ends: 1015 [2020-08-22 05:20:52,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 05:20:52,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-08-22 05:20:52,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 948. [2020-08-22 05:20:52,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2020-08-22 05:20:52,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1172 transitions. [2020-08-22 05:20:52,584 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1172 transitions. Word has length 61 [2020-08-22 05:20:52,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:52,584 INFO L479 AbstractCegarLoop]: Abstraction has 948 states and 1172 transitions. [2020-08-22 05:20:52,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:20:52,585 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1172 transitions. [2020-08-22 05:20:52,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-22 05:20:52,588 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:52,588 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:20:52,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:20:52,588 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:52,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:52,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1209411089, now seen corresponding path program 1 times [2020-08-22 05:20:52,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:52,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265148436] [2020-08-22 05:20:52,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,857 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:52,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:20:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:20:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 05:20:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 05:20:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 05:20:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 05:20:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,034 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 05:20:53,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265148436] [2020-08-22 05:20:53,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:20:53,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 05:20:53,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094330410] [2020-08-22 05:20:53,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:20:53,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:53,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:20:53,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:20:53,040 INFO L87 Difference]: Start difference. First operand 948 states and 1172 transitions. Second operand 10 states. [2020-08-22 05:20:53,657 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-22 05:20:54,217 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:56,246 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:57,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:57,730 INFO L93 Difference]: Finished difference Result 1803 states and 2319 transitions. [2020-08-22 05:20:57,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 05:20:57,731 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-22 05:20:57,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:57,740 INFO L225 Difference]: With dead ends: 1803 [2020-08-22 05:20:57,740 INFO L226 Difference]: Without dead ends: 1150 [2020-08-22 05:20:57,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-22 05:20:57,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2020-08-22 05:20:57,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1055. [2020-08-22 05:20:57,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-08-22 05:20:57,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1284 transitions. [2020-08-22 05:20:57,991 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1284 transitions. Word has length 89 [2020-08-22 05:20:57,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:57,994 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1284 transitions. [2020-08-22 05:20:57,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:20:57,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1284 transitions. [2020-08-22 05:20:58,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-22 05:20:58,002 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:58,003 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:20:58,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:20:58,003 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:58,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:58,004 INFO L82 PathProgramCache]: Analyzing trace with hash 2033395005, now seen corresponding path program 1 times [2020-08-22 05:20:58,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:58,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888628277] [2020-08-22 05:20:58,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,297 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:58,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:20:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:20:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 05:20:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 05:20:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 05:20:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 05:20:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 05:20:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 05:20:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,480 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 05:20:58,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888628277] [2020-08-22 05:20:58,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:20:58,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 05:20:58,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877449833] [2020-08-22 05:20:58,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:20:58,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:58,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:20:58,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:20:58,482 INFO L87 Difference]: Start difference. First operand 1055 states and 1284 transitions. Second operand 10 states. [2020-08-22 05:20:59,474 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:59,742 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:20:59,992 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:00,249 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:01,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:01,343 INFO L93 Difference]: Finished difference Result 2230 states and 2894 transitions. [2020-08-22 05:21:01,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 05:21:01,349 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 130 [2020-08-22 05:21:01,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:01,357 INFO L225 Difference]: With dead ends: 2230 [2020-08-22 05:21:01,358 INFO L226 Difference]: Without dead ends: 1199 [2020-08-22 05:21:01,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 05:21:01,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-08-22 05:21:01,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1085. [2020-08-22 05:21:01,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1085 states. [2020-08-22 05:21:01,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1318 transitions. [2020-08-22 05:21:01,633 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1318 transitions. Word has length 130 [2020-08-22 05:21:01,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:01,634 INFO L479 AbstractCegarLoop]: Abstraction has 1085 states and 1318 transitions. [2020-08-22 05:21:01,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:21:01,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1318 transitions. [2020-08-22 05:21:01,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-08-22 05:21:01,638 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:01,638 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:21:01,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 05:21:01,639 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:01,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:01,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1477382459, now seen corresponding path program 1 times [2020-08-22 05:21:01,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:01,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634131038] [2020-08-22 05:21:01,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:01,950 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:01,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:01,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:01,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:01,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:01,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:21:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:21:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 05:21:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 05:21:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-22 05:21:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-22 05:21:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 05:21:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:02,120 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 05:21:02,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634131038] [2020-08-22 05:21:02,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:21:02,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 05:21:02,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212913378] [2020-08-22 05:21:02,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 05:21:02,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:02,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 05:21:02,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:21:02,122 INFO L87 Difference]: Start difference. First operand 1085 states and 1318 transitions. Second operand 12 states. [2020-08-22 05:21:02,906 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:03,148 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:03,356 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:04,050 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:04,309 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:04,561 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:05,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:05,611 INFO L93 Difference]: Finished difference Result 1969 states and 2463 transitions. [2020-08-22 05:21:05,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 05:21:05,612 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 126 [2020-08-22 05:21:05,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:05,619 INFO L225 Difference]: With dead ends: 1969 [2020-08-22 05:21:05,619 INFO L226 Difference]: Without dead ends: 908 [2020-08-22 05:21:05,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 05:21:05,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-08-22 05:21:05,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 856. [2020-08-22 05:21:05,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 856 states. [2020-08-22 05:21:05,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1029 transitions. [2020-08-22 05:21:05,805 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1029 transitions. Word has length 126 [2020-08-22 05:21:05,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:05,806 INFO L479 AbstractCegarLoop]: Abstraction has 856 states and 1029 transitions. [2020-08-22 05:21:05,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 05:21:05,806 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1029 transitions. [2020-08-22 05:21:05,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-22 05:21:05,812 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:05,813 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:21:05,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 05:21:05,813 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:05,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:05,814 INFO L82 PathProgramCache]: Analyzing trace with hash -41255168, now seen corresponding path program 1 times [2020-08-22 05:21:05,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:05,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938877542] [2020-08-22 05:21:05,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,132 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:06,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:21:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:21:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:06,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:21:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 05:21:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 05:21:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 05:21:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 05:21:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 05:21:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,331 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 05:21:06,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938877542] [2020-08-22 05:21:06,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:21:06,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 05:21:06,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418557515] [2020-08-22 05:21:06,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 05:21:06,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:06,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 05:21:06,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:21:06,334 INFO L87 Difference]: Start difference. First operand 856 states and 1029 transitions. Second operand 12 states. [2020-08-22 05:21:06,896 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:07,763 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:21:08,056 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:21:08,294 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:21:08,514 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:08,738 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:09,096 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:09,691 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:09,956 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:21:10,236 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:21:11,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:11,925 INFO L93 Difference]: Finished difference Result 2072 states and 2648 transitions. [2020-08-22 05:21:11,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 05:21:11,926 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-22 05:21:11,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:11,934 INFO L225 Difference]: With dead ends: 2072 [2020-08-22 05:21:11,935 INFO L226 Difference]: Without dead ends: 1389 [2020-08-22 05:21:11,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-08-22 05:21:11,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2020-08-22 05:21:12,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1217. [2020-08-22 05:21:12,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2020-08-22 05:21:12,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1483 transitions. [2020-08-22 05:21:12,190 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1483 transitions. Word has length 130 [2020-08-22 05:21:12,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:12,191 INFO L479 AbstractCegarLoop]: Abstraction has 1217 states and 1483 transitions. [2020-08-22 05:21:12,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 05:21:12,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1483 transitions. [2020-08-22 05:21:12,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-22 05:21:12,198 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:12,199 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:21:12,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 05:21:12,199 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:12,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:12,200 INFO L82 PathProgramCache]: Analyzing trace with hash -786970621, now seen corresponding path program 1 times [2020-08-22 05:21:12,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:12,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803834473] [2020-08-22 05:21:12,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,483 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:12,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:21:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:21:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:21:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 05:21:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 05:21:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 05:21:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 05:21:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 05:21:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 05:21:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-22 05:21:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:12,731 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-22 05:21:12,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803834473] [2020-08-22 05:21:12,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:21:12,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 05:21:12,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823519147] [2020-08-22 05:21:12,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 05:21:12,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:12,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 05:21:12,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-22 05:21:12,736 INFO L87 Difference]: Start difference. First operand 1217 states and 1483 transitions. Second operand 13 states. [2020-08-22 05:21:13,374 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:13,678 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:14,050 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:14,677 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:15,821 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:16,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:16,840 INFO L93 Difference]: Finished difference Result 2226 states and 2782 transitions. [2020-08-22 05:21:16,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 05:21:16,840 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 163 [2020-08-22 05:21:16,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:16,847 INFO L225 Difference]: With dead ends: 2226 [2020-08-22 05:21:16,848 INFO L226 Difference]: Without dead ends: 1233 [2020-08-22 05:21:16,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2020-08-22 05:21:16,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-08-22 05:21:17,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 911. [2020-08-22 05:21:17,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2020-08-22 05:21:17,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1058 transitions. [2020-08-22 05:21:17,066 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1058 transitions. Word has length 163 [2020-08-22 05:21:17,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:17,068 INFO L479 AbstractCegarLoop]: Abstraction has 911 states and 1058 transitions. [2020-08-22 05:21:17,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 05:21:17,068 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1058 transitions. [2020-08-22 05:21:17,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-22 05:21:17,074 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:17,074 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:21:17,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 05:21:17,075 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:17,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:17,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1876724494, now seen corresponding path program 2 times [2020-08-22 05:21:17,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:17,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523044587] [2020-08-22 05:21:17,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 05:21:17,179 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 05:21:17,180 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 05:21:17,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 05:21:17,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:21:17 BoogieIcfgContainer [2020-08-22 05:21:17,247 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 05:21:17,249 INFO L168 Benchmark]: Toolchain (without parser) took 43983.98 ms. Allocated memory was 146.3 MB in the beginning and 712.0 MB in the end (delta: 565.7 MB). Free memory was 99.7 MB in the beginning and 391.5 MB in the end (delta: -291.8 MB). Peak memory consumption was 273.9 MB. Max. memory is 7.1 GB. [2020-08-22 05:21:17,253 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 146.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 05:21:17,254 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.98 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 99.5 MB in the beginning and 172.7 MB in the end (delta: -73.2 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-08-22 05:21:17,254 INFO L168 Benchmark]: Boogie Preprocessor took 92.56 ms. Allocated memory is still 203.4 MB. Free memory was 172.7 MB in the beginning and 167.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-08-22 05:21:17,258 INFO L168 Benchmark]: RCFGBuilder took 1139.46 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 167.7 MB in the beginning and 198.1 MB in the end (delta: -30.4 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. [2020-08-22 05:21:17,260 INFO L168 Benchmark]: TraceAbstraction took 42054.26 ms. Allocated memory was 235.9 MB in the beginning and 712.0 MB in the end (delta: 476.1 MB). Free memory was 198.1 MB in the beginning and 391.5 MB in the end (delta: -193.4 MB). Peak memory consumption was 282.7 MB. Max. memory is 7.1 GB. [2020-08-22 05:21:17,266 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 146.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 692.98 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 99.5 MB in the beginning and 172.7 MB in the end (delta: -73.2 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.56 ms. Allocated memory is still 203.4 MB. Free memory was 172.7 MB in the beginning and 167.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1139.46 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 167.7 MB in the beginning and 198.1 MB in the end (delta: -30.4 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42054.26 ms. Allocated memory was 235.9 MB in the beginning and 712.0 MB in the end (delta: 476.1 MB). Free memory was 198.1 MB in the beginning and 391.5 MB in the end (delta: -193.4 MB). Peak memory consumption was 282.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 752]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L238] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int pumpRunning = 0; [L556] int systemActive = 1; [L757] int cleanupTimeShifts = 4; [L853] int waterLevel = 1; [L854] int methaneLevelCritical = 0; [L830] int retValue_acc ; [L831] int tmp ; [L835] FCALL select_helpers() [L836] FCALL select_features() [L837] CALL, EXPR valid_product() [L464] int retValue_acc ; [L467] retValue_acc = 1 [L468] return (retValue_acc); [L837] RET, EXPR valid_product() [L837] tmp = valid_product() [L839] COND TRUE \read(tmp) [L841] FCALL setup() [L842] CALL runTest() [L824] CALL test() [L480] int splverifierCounter ; [L481] int tmp ; [L482] int tmp___0 ; [L483] int tmp___1 ; [L484] int tmp___2 ; [L487] splverifierCounter = 0 [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND TRUE \read(tmp) [L501] CALL waterRise() [L871] COND TRUE waterLevel < 2 [L872] waterLevel = waterLevel + 1 [L501] RET waterRise() [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND FALSE !(\read(pumpRunning)) [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND TRUE ! pumpRunning [L596] CALL, EXPR isHighWaterLevel() [L706] int retValue_acc ; [L707] int tmp ; [L708] int tmp___0 ; [L712] CALL, EXPR isHighWaterSensorDry() [L933] int retValue_acc ; [L936] COND FALSE !(waterLevel < 2) [L940] retValue_acc = 0 [L941] return (retValue_acc); [L712] RET, EXPR isHighWaterSensorDry() [L712] tmp = isHighWaterSensorDry() [L714] COND FALSE !(\read(tmp)) [L717] tmp___0 = 1 [L719] retValue_acc = tmp___0 [L720] return (retValue_acc); [L596] RET, EXPR isHighWaterLevel() [L596] tmp = isHighWaterLevel() [L598] COND TRUE \read(tmp) [L600] CALL activatePump() [L625] int tmp ; [L629] CALL, EXPR isMethaneAlarm() [L650] int retValue_acc ; [L654] CALL, EXPR isMethaneLevelCritical() [L892] int retValue_acc ; [L895] retValue_acc = methaneLevelCritical [L896] return (retValue_acc); [L654] RET, EXPR isMethaneLevelCritical() [L654] retValue_acc = isMethaneLevelCritical() [L656] return (retValue_acc); [L629] RET, EXPR isMethaneAlarm() [L629] tmp = isMethaneAlarm() [L631] COND FALSE !(\read(tmp)) [L635] CALL activatePump__wrappee__highWaterSensor() [L619] pumpRunning = 1 [L635] RET activatePump__wrappee__highWaterSensor() [L600] RET activatePump() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L536] RET timeShift() [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L536] RET timeShift() [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND TRUE tmp == 0 [L53] CALL, EXPR isPumpRunning() [L661] int retValue_acc ; [L664] retValue_acc = pumpRunning [L665] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L752] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 232 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 41.9s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 34.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1357 SDtfs, 3146 SDslu, 1751 SDs, 0 SdLazy, 8582 SolverSat, 2308 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 475 GetRequests, 314 SyntacticMatches, 6 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 14.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1217occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 10 MinimizatonAttempts, 1059 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 1067 NumberOfCodeBlocks, 1067 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 891 ConstructedInterpolants, 0 QuantifiedInterpolants, 329447 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 152/172 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...