/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:00:36,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:00:36,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:00:36,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:00:36,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:00:36,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:00:36,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:00:36,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:00:36,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:00:36,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:00:36,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:00:36,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:00:36,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:00:36,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:00:36,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:00:36,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:00:36,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:00:36,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:00:36,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:00:36,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:00:36,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:00:36,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:00:36,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:00:36,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:00:36,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:00:36,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:00:36,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:00:36,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:00:36,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:00:36,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:00:36,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:00:36,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:00:36,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:00:36,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:00:36,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:00:36,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:00:36,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:00:36,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:00:36,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:00:36,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:00:36,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:00:36,146 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 18:00:36,168 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:00:36,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:00:36,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:00:36,169 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:00:36,169 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:00:36,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:00:36,170 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:00:36,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:00:36,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:00:36,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:00:36,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:00:36,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:00:36,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:00:36,171 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:00:36,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:00:36,171 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:00:36,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:00:36,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:00:36,172 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:00:36,172 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:00:36,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:00:36,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:00:36,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:00:36,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:00:36,173 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:00:36,173 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:00:36,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:00:36,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:00:36,174 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:00:36,174 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 18:00:36,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:00:36,457 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:00:36,461 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:00:36,462 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:00:36,462 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:00:36,463 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2020-08-21 18:00:36,535 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c391f0d7/7830d1c5f740408886532b4a7c8779cd/FLAG34193ba01 [2020-08-21 18:00:37,035 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:00:37,036 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2020-08-21 18:00:37,048 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c391f0d7/7830d1c5f740408886532b4a7c8779cd/FLAG34193ba01 [2020-08-21 18:00:37,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c391f0d7/7830d1c5f740408886532b4a7c8779cd [2020-08-21 18:00:37,343 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:00:37,345 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:00:37,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:00:37,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:00:37,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:00:37,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:00:37" (1/1) ... [2020-08-21 18:00:37,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fb350db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:00:37, skipping insertion in model container [2020-08-21 18:00:37,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:00:37" (1/1) ... [2020-08-21 18:00:37,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:00:37,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:00:37,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:00:37,782 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:00:37,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:00:38,032 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:00:38,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:00:38 WrapperNode [2020-08-21 18:00:38,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:00:38,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:00:38,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:00:38,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:00:38,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:00:38" (1/1) ... [2020-08-21 18:00:38,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:00:38" (1/1) ... [2020-08-21 18:00:38,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:00:38" (1/1) ... [2020-08-21 18:00:38,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:00:38" (1/1) ... [2020-08-21 18:00:38,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:00:38" (1/1) ... [2020-08-21 18:00:38,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:00:38" (1/1) ... [2020-08-21 18:00:38,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:00:38" (1/1) ... [2020-08-21 18:00:38,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:00:38,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:00:38,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:00:38,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:00:38,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:00:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:00:38,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:00:38,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:00:38,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 18:00:38,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 18:00:38,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 18:00:38,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 18:00:38,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 18:00:38,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 18:00:38,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 18:00:38,192 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 18:00:38,192 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 18:00:38,192 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 18:00:38,193 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 18:00:38,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:00:38,193 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 18:00:38,193 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 18:00:38,193 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 18:00:38,193 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 18:00:38,194 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 18:00:38,194 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 18:00:38,194 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 18:00:38,194 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 18:00:38,194 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 18:00:38,194 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 18:00:38,195 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 18:00:38,195 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 18:00:38,195 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 18:00:38,195 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 18:00:38,195 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 18:00:38,195 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 18:00:38,195 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 18:00:38,196 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 18:00:38,196 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 18:00:38,196 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 18:00:38,196 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 18:00:38,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 18:00:38,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 18:00:38,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:00:38,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:00:38,197 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 18:00:38,197 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 18:00:38,197 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 18:00:38,197 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 18:00:38,197 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 18:00:38,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 18:00:38,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 18:00:38,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:00:38,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 18:00:38,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 18:00:38,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:00:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 18:00:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 18:00:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:00:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 18:00:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 18:00:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:00:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 18:00:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 18:00:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 18:00:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 18:00:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 18:00:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 18:00:38,201 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 18:00:38,201 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 18:00:38,201 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 18:00:38,201 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 18:00:38,201 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 18:00:38,201 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 18:00:38,201 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 18:00:38,201 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:00:38,202 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 18:00:38,202 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 18:00:38,202 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 18:00:38,202 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 18:00:38,202 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 18:00:38,202 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 18:00:38,203 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 18:00:38,203 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 18:00:38,203 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 18:00:38,203 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 18:00:38,203 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 18:00:38,203 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 18:00:38,204 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 18:00:38,204 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 18:00:38,204 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 18:00:38,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:00:38,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 18:00:38,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:00:39,314 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:00:39,314 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 18:00:39,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:00:39 BoogieIcfgContainer [2020-08-21 18:00:39,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:00:39,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:00:39,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:00:39,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:00:39,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:00:37" (1/3) ... [2020-08-21 18:00:39,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f2cc56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:00:39, skipping insertion in model container [2020-08-21 18:00:39,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:00:38" (2/3) ... [2020-08-21 18:00:39,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f2cc56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:00:39, skipping insertion in model container [2020-08-21 18:00:39,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:00:39" (3/3) ... [2020-08-21 18:00:39,327 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product33.cil.c [2020-08-21 18:00:39,338 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:00:39,345 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:00:39,359 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:00:39,383 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:00:39,384 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:00:39,384 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:00:39,384 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:00:39,385 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:00:39,385 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:00:39,385 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:00:39,385 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:00:39,407 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-08-21 18:00:39,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 18:00:39,417 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:00:39,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:00:39,418 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:00:39,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:00:39,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1120421974, now seen corresponding path program 1 times [2020-08-21 18:00:39,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:00:39,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272319170] [2020-08-21 18:00:39,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:00:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:40,073 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:00:40,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:00:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:40,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:00:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:40,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:00:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:40,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:00:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:40,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:00:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:40,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:00:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:40,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:00:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:40,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:00:40,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272319170] [2020-08-21 18:00:40,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:00:40,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 18:00:40,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032483818] [2020-08-21 18:00:40,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 18:00:40,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:00:40,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 18:00:40,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:00:40,230 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 3 states. [2020-08-21 18:00:41,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:00:41,352 INFO L93 Difference]: Finished difference Result 249 states and 331 transitions. [2020-08-21 18:00:41,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 18:00:41,354 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 18:00:41,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:00:41,368 INFO L225 Difference]: With dead ends: 249 [2020-08-21 18:00:41,369 INFO L226 Difference]: Without dead ends: 135 [2020-08-21 18:00:41,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:00:41,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-21 18:00:41,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-21 18:00:41,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-21 18:00:41,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2020-08-21 18:00:41,475 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 46 [2020-08-21 18:00:41,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:00:41,476 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2020-08-21 18:00:41,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 18:00:41,476 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2020-08-21 18:00:41,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 18:00:41,481 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:00:41,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:00:41,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:00:41,482 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:00:41,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:00:41,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1195015831, now seen corresponding path program 1 times [2020-08-21 18:00:41,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:00:41,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708916026] [2020-08-21 18:00:41,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:00:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:41,883 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:00:41,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:00:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:41,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:00:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:41,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:00:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:41,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:00:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:41,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:00:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:41,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:00:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:41,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 18:00:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:41,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:00:41,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708916026] [2020-08-21 18:00:41,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:00:41,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:00:41,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361953664] [2020-08-21 18:00:41,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:00:41,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:00:41,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:00:41,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:00:41,979 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 4 states. [2020-08-21 18:00:42,391 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:00:43,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:00:43,078 INFO L93 Difference]: Finished difference Result 182 states and 222 transitions. [2020-08-21 18:00:43,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:00:43,079 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 18:00:43,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:00:43,082 INFO L225 Difference]: With dead ends: 182 [2020-08-21 18:00:43,082 INFO L226 Difference]: Without dead ends: 119 [2020-08-21 18:00:43,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:00:43,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-21 18:00:43,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-21 18:00:43,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-21 18:00:43,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-08-21 18:00:43,132 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 47 [2020-08-21 18:00:43,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:00:43,132 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-08-21 18:00:43,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:00:43,132 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-08-21 18:00:43,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 18:00:43,144 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:00:43,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:00:43,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:00:43,145 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:00:43,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:00:43,146 INFO L82 PathProgramCache]: Analyzing trace with hash -234309885, now seen corresponding path program 1 times [2020-08-21 18:00:43,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:00:43,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424643547] [2020-08-21 18:00:43,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:00:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:43,490 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:00:43,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:00:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:43,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:00:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:43,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:00:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:43,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:00:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:43,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:00:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:43,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:00:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:43,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 18:00:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:43,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:00:43,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424643547] [2020-08-21 18:00:43,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:00:43,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 18:00:43,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31383168] [2020-08-21 18:00:43,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 18:00:43,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:00:43,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 18:00:43,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 18:00:43,569 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 8 states. [2020-08-21 18:00:43,966 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:00:44,274 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:00:44,523 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:00:44,795 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:00:45,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:00:45,682 INFO L93 Difference]: Finished difference Result 191 states and 236 transitions. [2020-08-21 18:00:45,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 18:00:45,683 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 18:00:45,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:00:45,685 INFO L225 Difference]: With dead ends: 191 [2020-08-21 18:00:45,685 INFO L226 Difference]: Without dead ends: 119 [2020-08-21 18:00:45,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:00:45,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-21 18:00:45,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-21 18:00:45,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-21 18:00:45,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-08-21 18:00:45,758 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 51 [2020-08-21 18:00:45,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:00:45,759 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-08-21 18:00:45,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 18:00:45,759 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-08-21 18:00:45,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 18:00:45,761 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:00:45,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:00:45,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:00:45,762 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:00:45,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:00:45,762 INFO L82 PathProgramCache]: Analyzing trace with hash -962632878, now seen corresponding path program 1 times [2020-08-21 18:00:45,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:00:45,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434008968] [2020-08-21 18:00:45,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:00:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:46,087 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:00:46,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:00:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:46,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:00:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:46,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:00:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:46,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:00:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:46,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:00:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:46,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 18:00:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:46,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:00:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:46,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 18:00:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:46,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 18:00:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:46,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:00:46,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434008968] [2020-08-21 18:00:46,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:00:46,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 18:00:46,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306610287] [2020-08-21 18:00:46,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:00:46,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:00:46,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:00:46,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:00:46,186 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 6 states. [2020-08-21 18:00:46,521 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:00:47,659 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:00:48,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:00:48,090 INFO L93 Difference]: Finished difference Result 274 states and 340 transitions. [2020-08-21 18:00:48,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 18:00:48,091 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-21 18:00:48,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:00:48,114 INFO L225 Difference]: With dead ends: 274 [2020-08-21 18:00:48,114 INFO L226 Difference]: Without dead ends: 202 [2020-08-21 18:00:48,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:00:48,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-21 18:00:48,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 161. [2020-08-21 18:00:48,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-08-21 18:00:48,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 185 transitions. [2020-08-21 18:00:48,169 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 185 transitions. Word has length 59 [2020-08-21 18:00:48,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:00:48,169 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 185 transitions. [2020-08-21 18:00:48,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:00:48,170 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 185 transitions. [2020-08-21 18:00:48,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-21 18:00:48,171 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:00:48,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:00:48,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:00:48,171 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:00:48,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:00:48,172 INFO L82 PathProgramCache]: Analyzing trace with hash 869233952, now seen corresponding path program 1 times [2020-08-21 18:00:48,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:00:48,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073768509] [2020-08-21 18:00:48,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:00:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:48,492 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:00:48,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:00:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:48,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:00:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:48,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:00:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:48,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:00:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:48,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:00:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:48,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 18:00:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:48,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:00:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:48,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:00:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:48,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:00:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:48,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 18:00:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:48,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 18:00:48,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:48,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:00:48,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073768509] [2020-08-21 18:00:48,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:00:48,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 18:00:48,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572863265] [2020-08-21 18:00:48,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:00:48,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:00:48,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:00:48,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:00:48,611 INFO L87 Difference]: Start difference. First operand 161 states and 185 transitions. Second operand 12 states. [2020-08-21 18:00:49,162 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:00:49,478 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:00:49,779 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:00:50,014 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:00:50,507 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:00:51,318 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:00:51,587 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:00:51,827 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:00:52,076 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:00:52,382 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:00:52,629 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:00:53,433 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:00:53,728 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:00:54,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:00:54,338 INFO L93 Difference]: Finished difference Result 568 states and 750 transitions. [2020-08-21 18:00:54,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 18:00:54,338 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-08-21 18:00:54,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:00:54,344 INFO L225 Difference]: With dead ends: 568 [2020-08-21 18:00:54,345 INFO L226 Difference]: Without dead ends: 431 [2020-08-21 18:00:54,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 18:00:54,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-08-21 18:00:54,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 373. [2020-08-21 18:00:54,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-08-21 18:00:54,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 443 transitions. [2020-08-21 18:00:54,441 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 443 transitions. Word has length 73 [2020-08-21 18:00:54,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:00:54,442 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 443 transitions. [2020-08-21 18:00:54,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:00:54,442 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 443 transitions. [2020-08-21 18:00:54,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-21 18:00:54,445 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:00:54,445 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:00:54,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:00:54,446 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:00:54,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:00:54,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1180420772, now seen corresponding path program 1 times [2020-08-21 18:00:54,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:00:54,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137862975] [2020-08-21 18:00:54,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:00:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:54,708 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:00:54,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:00:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:54,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:00:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:54,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:00:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:54,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:00:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:54,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:00:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:54,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:00:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:54,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 18:00:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:54,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:00:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:54,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:00:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:54,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:00:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:54,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:00:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:54,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 18:00:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:54,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:00:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:54,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 18:00:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:54,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:00:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:54,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 18:00:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:54,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:00:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:54,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-21 18:00:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:54,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 18:00:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:00:54,926 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-21 18:00:54,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137862975] [2020-08-21 18:00:54,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:00:54,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 18:00:54,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614806519] [2020-08-21 18:00:54,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 18:00:54,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:00:54,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 18:00:54,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 18:00:54,929 INFO L87 Difference]: Start difference. First operand 373 states and 443 transitions. Second operand 13 states. [2020-08-21 18:00:55,425 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:00:56,001 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:00:56,465 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:00:56,718 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 18:00:57,006 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:00:57,255 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:00:57,487 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:00:57,730 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 18:00:58,018 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:00:58,279 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:00:59,581 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:00:59,810 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:01:00,040 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:01:00,286 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:01:00,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:01:00,720 INFO L93 Difference]: Finished difference Result 778 states and 1000 transitions. [2020-08-21 18:01:00,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 18:01:00,721 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 117 [2020-08-21 18:01:00,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:01:00,726 INFO L225 Difference]: With dead ends: 778 [2020-08-21 18:01:00,726 INFO L226 Difference]: Without dead ends: 429 [2020-08-21 18:01:00,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 18:01:00,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-08-21 18:01:00,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 367. [2020-08-21 18:01:00,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-08-21 18:01:00,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 437 transitions. [2020-08-21 18:01:00,804 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 437 transitions. Word has length 117 [2020-08-21 18:01:00,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:01:00,804 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 437 transitions. [2020-08-21 18:01:00,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 18:01:00,805 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 437 transitions. [2020-08-21 18:01:00,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-21 18:01:00,806 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:01:00,807 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] [2020-08-21 18:01:00,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 18:01:00,807 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:01:00,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:01:00,807 INFO L82 PathProgramCache]: Analyzing trace with hash -2066212398, now seen corresponding path program 1 times [2020-08-21 18:01:00,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:01:00,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972792893] [2020-08-21 18:01:00,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:01:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:01,105 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:01:01,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:01:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:01,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:01:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:01,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:01:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:01,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:01:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:01,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:01:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:01,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:01:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:01,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:01:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:01,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:01:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:01,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:01:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:01,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:01:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:01,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 18:01:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:01,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:01:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:01,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 18:01:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:01,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 18:01:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:01,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:01:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:01,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 18:01:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:01,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 18:01:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:01,292 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 18:01:01,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972792893] [2020-08-21 18:01:01,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:01:01,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 18:01:01,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675100103] [2020-08-21 18:01:01,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:01:01,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:01:01,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:01:01,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:01:01,295 INFO L87 Difference]: Start difference. First operand 367 states and 437 transitions. Second operand 12 states. [2020-08-21 18:01:01,856 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:01:02,114 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:01:02,357 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:01:02,882 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:01:03,135 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:01:03,360 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:01:04,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:01:04,015 INFO L93 Difference]: Finished difference Result 663 states and 818 transitions. [2020-08-21 18:01:04,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 18:01:04,015 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-21 18:01:04,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:01:04,018 INFO L225 Difference]: With dead ends: 663 [2020-08-21 18:01:04,018 INFO L226 Difference]: Without dead ends: 320 [2020-08-21 18:01:04,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 18:01:04,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-08-21 18:01:04,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 296. [2020-08-21 18:01:04,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-08-21 18:01:04,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 350 transitions. [2020-08-21 18:01:04,108 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 350 transitions. Word has length 109 [2020-08-21 18:01:04,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:01:04,108 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 350 transitions. [2020-08-21 18:01:04,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:01:04,108 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 350 transitions. [2020-08-21 18:01:04,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-21 18:01:04,110 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:01:04,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:01:04,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 18:01:04,111 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:01:04,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:01:04,111 INFO L82 PathProgramCache]: Analyzing trace with hash 147640793, now seen corresponding path program 1 times [2020-08-21 18:01:04,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:01:04,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351558174] [2020-08-21 18:01:04,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:01:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:04,477 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:01:04,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:01:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:04,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:01:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:04,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:01:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:04,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:01:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:04,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:01:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:04,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 18:01:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:04,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 18:01:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:04,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:01:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:04,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:01:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:04,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:01:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:04,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:01:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:04,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 18:01:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:04,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:01:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:04,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 18:01:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:04,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 18:01:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:04,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:01:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:04,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 18:01:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:04,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 18:01:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:01:04,655 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 18:01:04,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351558174] [2020-08-21 18:01:04,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:01:04,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 18:01:04,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79401055] [2020-08-21 18:01:04,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:01:04,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:01:04,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:01:04,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:01:04,658 INFO L87 Difference]: Start difference. First operand 296 states and 350 transitions. Second operand 12 states. [2020-08-21 18:01:05,189 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:01:05,917 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:01:06,408 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:01:06,684 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:01:06,908 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:01:07,136 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:01:07,382 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:01:07,622 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:01:08,585 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:01:08,851 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:01:09,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:01:09,348 INFO L93 Difference]: Finished difference Result 687 states and 875 transitions. [2020-08-21 18:01:09,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 18:01:09,349 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 113 [2020-08-21 18:01:09,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:01:09,354 INFO L225 Difference]: With dead ends: 687 [2020-08-21 18:01:09,354 INFO L226 Difference]: Without dead ends: 469 [2020-08-21 18:01:09,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=235, Invalid=577, Unknown=0, NotChecked=0, Total=812 [2020-08-21 18:01:09,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-08-21 18:01:09,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 393. [2020-08-21 18:01:09,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-08-21 18:01:09,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 472 transitions. [2020-08-21 18:01:09,431 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 472 transitions. Word has length 113 [2020-08-21 18:01:09,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:01:09,432 INFO L479 AbstractCegarLoop]: Abstraction has 393 states and 472 transitions. [2020-08-21 18:01:09,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:01:09,432 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 472 transitions. [2020-08-21 18:01:09,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-21 18:01:09,435 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:01:09,435 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, 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] [2020-08-21 18:01:09,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 18:01:09,436 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:01:09,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:01:09,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1088865250, now seen corresponding path program 2 times [2020-08-21 18:01:09,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:01:09,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086226187] [2020-08-21 18:01:09,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:01:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 18:01:09,495 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 18:01:09,495 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 18:01:09,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 18:01:09,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:01:09 BoogieIcfgContainer [2020-08-21 18:01:09,540 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:01:09,545 INFO L168 Benchmark]: Toolchain (without parser) took 32197.38 ms. Allocated memory was 140.5 MB in the beginning and 621.8 MB in the end (delta: 481.3 MB). Free memory was 102.8 MB in the beginning and 290.7 MB in the end (delta: -187.9 MB). Peak memory consumption was 293.4 MB. Max. memory is 7.1 GB. [2020-08-21 18:01:09,550 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-08-21 18:01:09,552 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.90 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.8 MB in the beginning and 172.3 MB in the end (delta: -69.5 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2020-08-21 18:01:09,552 INFO L168 Benchmark]: Boogie Preprocessor took 88.73 ms. Allocated memory is still 203.9 MB. Free memory was 172.3 MB in the beginning and 168.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-21 18:01:09,554 INFO L168 Benchmark]: RCFGBuilder took 1196.77 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 168.3 MB in the beginning and 198.0 MB in the end (delta: -29.7 MB). Peak memory consumption was 82.3 MB. Max. memory is 7.1 GB. [2020-08-21 18:01:09,557 INFO L168 Benchmark]: TraceAbstraction took 30219.59 ms. Allocated memory was 235.9 MB in the beginning and 621.8 MB in the end (delta: 385.9 MB). Free memory was 196.3 MB in the beginning and 290.7 MB in the end (delta: -94.3 MB). Peak memory consumption was 291.5 MB. Max. memory is 7.1 GB. [2020-08-21 18:01:09,565 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.6 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 686.90 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.8 MB in the beginning and 172.3 MB in the end (delta: -69.5 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.73 ms. Allocated memory is still 203.9 MB. Free memory was 172.3 MB in the beginning and 168.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1196.77 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 168.3 MB in the beginning and 198.0 MB in the end (delta: -29.7 MB). Peak memory consumption was 82.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30219.59 ms. Allocated memory was 235.9 MB in the beginning and 621.8 MB in the end (delta: 385.9 MB). Free memory was 196.3 MB in the beginning and 290.7 MB in the end (delta: -94.3 MB). Peak memory consumption was 291.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 869]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L406] int cleanupTimeShifts = 4; [L615] int waterLevel = 1; [L616] int methaneLevelCritical = 0; [L712] int pumpRunning = 0; [L713] int systemActive = 1; [L487] int retValue_acc ; [L488] int tmp ; [L492] FCALL select_helpers() [L493] FCALL select_features() [L494] CALL, EXPR valid_product() [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); [L494] RET, EXPR valid_product() [L494] tmp = valid_product() [L496] COND TRUE \read(tmp) [L498] FCALL setup() [L499] CALL runTest() [L478] CALL test() [L546] int splverifierCounter ; [L547] int tmp ; [L548] int tmp___0 ; [L549] int tmp___1 ; [L550] int tmp___2 ; [L553] splverifierCounter = 0 [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND TRUE \read(tmp) [L567] CALL waterRise() [L633] COND TRUE waterLevel < 2 [L634] waterLevel = waterLevel + 1 [L567] RET waterRise() [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND FALSE !(\read(pumpRunning)) [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND TRUE ! pumpRunning [L754] CALL, EXPR isHighWaterLevel() [L846] int retValue_acc ; [L847] int tmp ; [L848] int tmp___0 ; [L852] CALL, EXPR isHighWaterSensorDry() [L695] int retValue_acc ; [L698] COND FALSE !(waterLevel < 2) [L702] retValue_acc = 0 [L703] return (retValue_acc); [L852] RET, EXPR isHighWaterSensorDry() [L852] tmp = isHighWaterSensorDry() [L854] COND FALSE !(\read(tmp)) [L857] tmp___0 = 1 [L859] retValue_acc = tmp___0 [L860] return (retValue_acc); [L754] RET, EXPR isHighWaterLevel() [L754] tmp = isHighWaterLevel() [L756] COND TRUE \read(tmp) [L758] CALL activatePump() [L777] pumpRunning = 1 [L758] RET activatePump() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND FALSE !(tmp == 0) [L735] RET __utac_acc__Specification4_spec__1() [L598] RET timeShift() [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND FALSE !(\read(tmp)) [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND TRUE \read(pumpRunning) [L722] CALL lowerWaterLevel() [L621] COND TRUE waterLevel > 0 [L622] waterLevel = waterLevel - 1 [L722] RET lowerWaterLevel() [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND FALSE !(! pumpRunning) [L767] FCALL processEnvironment__wrappee__base() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND FALSE !(tmp == 0) [L735] RET __utac_acc__Specification4_spec__1() [L598] RET timeShift() [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND FALSE !(\read(tmp)) [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND TRUE \read(pumpRunning) [L722] CALL lowerWaterLevel() [L621] COND TRUE waterLevel > 0 [L622] waterLevel = waterLevel - 1 [L722] RET lowerWaterLevel() [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND FALSE !(! pumpRunning) [L767] FCALL processEnvironment__wrappee__base() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND TRUE tmp == 0 [L884] CALL, EXPR isPumpRunning() [L801] int retValue_acc ; [L804] retValue_acc = pumpRunning [L805] return (retValue_acc); [L884] RET, EXPR isPumpRunning() [L884] tmp___0 = isPumpRunning() [L886] COND TRUE \read(tmp___0) [L888] CALL __automaton_fail() [L869] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.1s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 25.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 805 SDtfs, 1767 SDslu, 1087 SDs, 0 SdLazy, 5105 SolverSat, 1151 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 342 GetRequests, 215 SyntacticMatches, 5 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 14.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=393occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 337 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 763 NumberOfCodeBlocks, 763 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 607 ConstructedInterpolants, 0 QuantifiedInterpolants, 203130 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 66/76 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...