/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 06:09:06,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:09:06,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:09:06,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:09:06,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:09:06,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:09:06,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:09:06,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:09:06,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:09:06,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:09:06,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:09:06,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:09:06,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:09:06,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:09:06,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:09:06,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:09:06,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:09:06,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:09:06,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:09:06,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:09:06,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:09:06,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:09:06,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:09:06,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:09:06,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:09:06,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:09:06,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:09:06,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:09:06,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:09:06,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:09:06,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:09:06,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:09:06,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:09:06,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:09:06,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:09:06,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:09:06,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:09:06,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:09:06,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:09:06,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:09:06,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:09:06,190 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 06:09:06,228 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:09:06,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:09:06,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:09:06,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:09:06,230 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:09:06,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:09:06,231 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:09:06,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:09:06,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:09:06,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:09:06,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:09:06,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:09:06,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:09:06,233 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:09:06,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:09:06,233 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:09:06,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:09:06,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:09:06,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:09:06,234 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:09:06,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:09:06,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:09:06,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:09:06,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:09:06,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:09:06,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:09:06,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:09:06,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:09:06,236 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:09:06,236 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-08-22 06:09:06,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:09:06,622 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:09:06,626 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:09:06,628 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:09:06,628 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:09:06,629 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-08-22 06:09:06,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7029bcf0/c00d59d2482a482db9965e288520a7fe/FLAG7347edfc6 [2020-08-22 06:09:07,204 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:09:07,205 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-08-22 06:09:07,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7029bcf0/c00d59d2482a482db9965e288520a7fe/FLAG7347edfc6 [2020-08-22 06:09:07,580 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7029bcf0/c00d59d2482a482db9965e288520a7fe [2020-08-22 06:09:07,589 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:09:07,591 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:09:07,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:09:07,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:09:07,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:09:07,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:09:07" (1/1) ... [2020-08-22 06:09:07,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30847a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:07, skipping insertion in model container [2020-08-22 06:09:07,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:09:07" (1/1) ... [2020-08-22 06:09:07,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:09:07,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:09:08,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:09:08,087 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:09:08,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:09:08,257 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:09:08,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:08 WrapperNode [2020-08-22 06:09:08,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:09:08,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:09:08,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:09:08,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:09:08,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:08" (1/1) ... [2020-08-22 06:09:08,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:08" (1/1) ... [2020-08-22 06:09:08,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:08" (1/1) ... [2020-08-22 06:09:08,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:08" (1/1) ... [2020-08-22 06:09:08,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:08" (1/1) ... [2020-08-22 06:09:08,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:08" (1/1) ... [2020-08-22 06:09:08,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:08" (1/1) ... [2020-08-22 06:09:08,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:09:08,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:09:08,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:09:08,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:09:08,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:09:08,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:09:08,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:09:08,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 06:09:08,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 06:09:08,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 06:09:08,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 06:09:08,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 06:09:08,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 06:09:08,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 06:09:08,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 06:09:08,413 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 06:09:08,414 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 06:09:08,414 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 06:09:08,414 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 06:09:08,414 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 06:09:08,415 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 06:09:08,415 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 06:09:08,415 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 06:09:08,415 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 06:09:08,415 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 06:09:08,416 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 06:09:08,416 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 06:09:08,416 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 06:09:08,416 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 06:09:08,416 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 06:09:08,416 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 06:09:08,417 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 06:09:08,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 06:09:08,417 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 06:09:08,417 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 06:09:08,417 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 06:09:08,418 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 06:09:08,418 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:09:08,418 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 06:09:08,418 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 06:09:08,418 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 06:09:08,418 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 06:09:08,419 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 06:09:08,419 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 06:09:08,419 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 06:09:08,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:09:08,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 06:09:08,419 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 06:09:08,419 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 06:09:08,419 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 06:09:08,420 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 06:09:08,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 06:09:08,420 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 06:09:08,420 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 06:09:08,420 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 06:09:08,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 06:09:08,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 06:09:08,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 06:09:08,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 06:09:08,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 06:09:08,421 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 06:09:08,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 06:09:08,421 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 06:09:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 06:09:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 06:09:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 06:09:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 06:09:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 06:09:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 06:09:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 06:09:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 06:09:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 06:09:08,423 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 06:09:08,423 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 06:09:08,423 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 06:09:08,423 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 06:09:08,423 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 06:09:08,423 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 06:09:08,423 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 06:09:08,423 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 06:09:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 06:09:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 06:09:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 06:09:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 06:09:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 06:09:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 06:09:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 06:09:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 06:09:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 06:09:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 06:09:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 06:09:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 06:09:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 06:09:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 06:09:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 06:09:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:09:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:09:08,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 06:09:08,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:09:09,403 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:09:09,404 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 06:09:09,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:09:09 BoogieIcfgContainer [2020-08-22 06:09:09,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:09:09,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:09:09,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:09:09,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:09:09,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:09:07" (1/3) ... [2020-08-22 06:09:09,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595ba31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:09:09, skipping insertion in model container [2020-08-22 06:09:09,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:08" (2/3) ... [2020-08-22 06:09:09,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595ba31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:09:09, skipping insertion in model container [2020-08-22 06:09:09,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:09:09" (3/3) ... [2020-08-22 06:09:09,418 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product44.cil.c [2020-08-22 06:09:09,428 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:09:09,436 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:09:09,450 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:09:09,472 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:09:09,473 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:09:09,473 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:09:09,473 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:09:09,473 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:09:09,473 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:09:09,473 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:09:09,474 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:09:09,496 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-08-22 06:09:09,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 06:09:09,507 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:09:09,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:09:09,508 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:09:09,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:09:09,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1915366745, now seen corresponding path program 1 times [2020-08-22 06:09:09,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:09:09,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698061226] [2020-08-22 06:09:09,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:09:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:10,234 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:09:10,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:09:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:10,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:09:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:10,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:09:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:10,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:09:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:10,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:09:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:10,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 06:09:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:10,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 06:09:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:10,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:09:10,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698061226] [2020-08-22 06:09:10,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:09:10,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 06:09:10,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614448563] [2020-08-22 06:09:10,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 06:09:10,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:09:10,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 06:09:10,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 06:09:10,358 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2020-08-22 06:09:11,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:09:11,507 INFO L93 Difference]: Finished difference Result 310 states and 398 transitions. [2020-08-22 06:09:11,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 06:09:11,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 06:09:11,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:09:11,524 INFO L225 Difference]: With dead ends: 310 [2020-08-22 06:09:11,524 INFO L226 Difference]: Without dead ends: 168 [2020-08-22 06:09:11,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 06:09:11,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-22 06:09:11,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 133. [2020-08-22 06:09:11,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-22 06:09:11,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 153 transitions. [2020-08-22 06:09:11,615 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 153 transitions. Word has length 46 [2020-08-22 06:09:11,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:09:11,616 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 153 transitions. [2020-08-22 06:09:11,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 06:09:11,616 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 153 transitions. [2020-08-22 06:09:11,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 06:09:11,623 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:09:11,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:09:11,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:09:11,626 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:09:11,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:09:11,626 INFO L82 PathProgramCache]: Analyzing trace with hash -868486899, now seen corresponding path program 1 times [2020-08-22 06:09:11,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:09:11,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825323610] [2020-08-22 06:09:11,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:09:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:12,016 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:09:12,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:09:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:12,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:09:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:12,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:09:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:12,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:09:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:12,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:09:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:12,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 06:09:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:12,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 06:09:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:12,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:09:12,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825323610] [2020-08-22 06:09:12,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:09:12,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 06:09:12,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103595630] [2020-08-22 06:09:12,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 06:09:12,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:09:12,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 06:09:12,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:09:12,063 INFO L87 Difference]: Start difference. First operand 133 states and 153 transitions. Second operand 4 states. [2020-08-22 06:09:12,431 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:09:13,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:09:13,305 INFO L93 Difference]: Finished difference Result 230 states and 275 transitions. [2020-08-22 06:09:13,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 06:09:13,306 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 06:09:13,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:09:13,310 INFO L225 Difference]: With dead ends: 230 [2020-08-22 06:09:13,310 INFO L226 Difference]: Without dead ends: 152 [2020-08-22 06:09:13,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:09:13,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-22 06:09:13,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 124. [2020-08-22 06:09:13,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-22 06:09:13,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 141 transitions. [2020-08-22 06:09:13,352 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 141 transitions. Word has length 47 [2020-08-22 06:09:13,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:09:13,353 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 141 transitions. [2020-08-22 06:09:13,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 06:09:13,353 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 141 transitions. [2020-08-22 06:09:13,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 06:09:13,355 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:09:13,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:09:13,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:09:13,356 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:09:13,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:09:13,356 INFO L82 PathProgramCache]: Analyzing trace with hash -905097918, now seen corresponding path program 1 times [2020-08-22 06:09:13,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:09:13,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689822738] [2020-08-22 06:09:13,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:09:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:13,724 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:09:13,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:09:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:13,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:09:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:13,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:09:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:13,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:09:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:13,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:09:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:13,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 06:09:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:13,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 06:09:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:13,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:09:13,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689822738] [2020-08-22 06:09:13,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:09:13,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 06:09:13,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721461470] [2020-08-22 06:09:13,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 06:09:13,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:09:13,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 06:09:13,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:09:13,827 INFO L87 Difference]: Start difference. First operand 124 states and 141 transitions. Second operand 8 states. [2020-08-22 06:09:14,219 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:09:14,506 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:09:14,768 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:09:14,990 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:09:15,679 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:09:17,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:09:17,335 INFO L93 Difference]: Finished difference Result 427 states and 518 transitions. [2020-08-22 06:09:17,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 06:09:17,336 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-22 06:09:17,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:09:17,341 INFO L225 Difference]: With dead ends: 427 [2020-08-22 06:09:17,341 INFO L226 Difference]: Without dead ends: 327 [2020-08-22 06:09:17,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 06:09:17,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-08-22 06:09:17,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 250. [2020-08-22 06:09:17,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-08-22 06:09:17,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 294 transitions. [2020-08-22 06:09:17,415 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 294 transitions. Word has length 52 [2020-08-22 06:09:17,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:09:17,416 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 294 transitions. [2020-08-22 06:09:17,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 06:09:17,416 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 294 transitions. [2020-08-22 06:09:17,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 06:09:17,418 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:09:17,418 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:09:17,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 06:09:17,419 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:09:17,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:09:17,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1583600214, now seen corresponding path program 1 times [2020-08-22 06:09:17,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:09:17,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474828465] [2020-08-22 06:09:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:09:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:17,745 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:09:17,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:09:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:17,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:09:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:17,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:09:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:17,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:09:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:17,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:09:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:17,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 06:09:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:17,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 06:09:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:17,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 06:09:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:17,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:09:17,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474828465] [2020-08-22 06:09:17,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:09:17,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 06:09:17,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796242963] [2020-08-22 06:09:17,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 06:09:17,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:09:17,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 06:09:17,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 06:09:17,914 INFO L87 Difference]: Start difference. First operand 250 states and 294 transitions. Second operand 12 states. [2020-08-22 06:09:18,348 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:09:18,653 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:09:18,893 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:09:19,137 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:09:19,743 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:09:20,458 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:09:20,794 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:09:21,068 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:09:21,370 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:09:21,621 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:09:21,983 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:09:22,254 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:09:22,520 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:09:24,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:09:24,157 INFO L93 Difference]: Finished difference Result 1013 states and 1362 transitions. [2020-08-22 06:09:24,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 06:09:24,158 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-22 06:09:24,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:09:24,174 INFO L225 Difference]: With dead ends: 1013 [2020-08-22 06:09:24,175 INFO L226 Difference]: Without dead ends: 787 [2020-08-22 06:09:24,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 06:09:24,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-08-22 06:09:24,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 690. [2020-08-22 06:09:24,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-08-22 06:09:24,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 848 transitions. [2020-08-22 06:09:24,367 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 848 transitions. Word has length 57 [2020-08-22 06:09:24,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:09:24,368 INFO L479 AbstractCegarLoop]: Abstraction has 690 states and 848 transitions. [2020-08-22 06:09:24,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 06:09:24,368 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 848 transitions. [2020-08-22 06:09:24,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 06:09:24,372 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:09:24,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:09:24,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 06:09:24,373 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:09:24,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:09:24,373 INFO L82 PathProgramCache]: Analyzing trace with hash -436303684, now seen corresponding path program 1 times [2020-08-22 06:09:24,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:09:24,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628689625] [2020-08-22 06:09:24,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:09:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:24,636 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:09:24,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:09:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:24,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:09:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:24,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:09:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:24,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:09:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:24,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:09:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:24,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 06:09:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:24,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 06:09:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:24,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 06:09:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:24,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 06:09:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:24,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:09:24,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628689625] [2020-08-22 06:09:24,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:09:24,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 06:09:24,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338661628] [2020-08-22 06:09:24,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 06:09:24,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:09:24,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 06:09:24,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:09:24,754 INFO L87 Difference]: Start difference. First operand 690 states and 848 transitions. Second operand 6 states. [2020-08-22 06:09:25,100 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:09:26,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:09:26,795 INFO L93 Difference]: Finished difference Result 1681 states and 2195 transitions. [2020-08-22 06:09:26,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 06:09:26,797 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 06:09:26,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:09:26,804 INFO L225 Difference]: With dead ends: 1681 [2020-08-22 06:09:26,805 INFO L226 Difference]: Without dead ends: 1015 [2020-08-22 06:09:26,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 06:09:26,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-08-22 06:09:27,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 948. [2020-08-22 06:09:27,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2020-08-22 06:09:27,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1172 transitions. [2020-08-22 06:09:27,034 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1172 transitions. Word has length 61 [2020-08-22 06:09:27,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:09:27,034 INFO L479 AbstractCegarLoop]: Abstraction has 948 states and 1172 transitions. [2020-08-22 06:09:27,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 06:09:27,035 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1172 transitions. [2020-08-22 06:09:27,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-22 06:09:27,038 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:09:27,038 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:09:27,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 06:09:27,039 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:09:27,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:09:27,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1209411089, now seen corresponding path program 1 times [2020-08-22 06:09:27,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:09:27,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925186515] [2020-08-22 06:09:27,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:09:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:27,314 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:09:27,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:09:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:27,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:09:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:27,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:09:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:27,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:09:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:27,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:09:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:27,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 06:09:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:27,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:09:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:27,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 06:09:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:27,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:09:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:27,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:09:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:27,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 06:09:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:27,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 06:09:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:27,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 06:09:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 06:09:27,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925186515] [2020-08-22 06:09:27,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:09:27,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 06:09:27,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902901070] [2020-08-22 06:09:27,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 06:09:27,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:09:27,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 06:09:27,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:09:27,473 INFO L87 Difference]: Start difference. First operand 948 states and 1172 transitions. Second operand 10 states. [2020-08-22 06:09:28,035 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-22 06:09:28,600 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:09:30,577 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:09:32,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:09:32,183 INFO L93 Difference]: Finished difference Result 1803 states and 2319 transitions. [2020-08-22 06:09:32,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 06:09:32,184 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-22 06:09:32,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:09:32,192 INFO L225 Difference]: With dead ends: 1803 [2020-08-22 06:09:32,193 INFO L226 Difference]: Without dead ends: 1150 [2020-08-22 06:09:32,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-22 06:09:32,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2020-08-22 06:09:32,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1055. [2020-08-22 06:09:32,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-08-22 06:09:32,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1284 transitions. [2020-08-22 06:09:32,395 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1284 transitions. Word has length 89 [2020-08-22 06:09:32,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:09:32,396 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1284 transitions. [2020-08-22 06:09:32,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 06:09:32,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1284 transitions. [2020-08-22 06:09:32,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-22 06:09:32,400 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:09:32,401 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:09:32,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 06:09:32,401 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:09:32,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:09:32,401 INFO L82 PathProgramCache]: Analyzing trace with hash 2033395005, now seen corresponding path program 1 times [2020-08-22 06:09:32,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:09:32,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025572877] [2020-08-22 06:09:32,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:09:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:32,703 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:09:32,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:09:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:32,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:09:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:32,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:09:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:32,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:09:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:32,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:09:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:32,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 06:09:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:32,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:09:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:32,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:09:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:32,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:09:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:32,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:09:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:32,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:09:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:32,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:09:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:32,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:09:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:32,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 06:09:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:32,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:09:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:32,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 06:09:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:32,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 06:09:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:32,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 06:09:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:32,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:09:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:32,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 06:09:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:32,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 06:09:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 06:09:32,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025572877] [2020-08-22 06:09:32,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:09:32,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 06:09:32,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124085157] [2020-08-22 06:09:32,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 06:09:32,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:09:32,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 06:09:32,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:09:32,877 INFO L87 Difference]: Start difference. First operand 1055 states and 1284 transitions. Second operand 10 states. [2020-08-22 06:09:34,084 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:09:34,347 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 06:09:34,618 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:09:34,863 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:09:35,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:09:35,964 INFO L93 Difference]: Finished difference Result 2230 states and 2894 transitions. [2020-08-22 06:09:35,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 06:09:35,965 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 130 [2020-08-22 06:09:35,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:09:35,972 INFO L225 Difference]: With dead ends: 2230 [2020-08-22 06:09:35,973 INFO L226 Difference]: Without dead ends: 1199 [2020-08-22 06:09:35,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 06:09:35,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-08-22 06:09:36,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1085. [2020-08-22 06:09:36,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1085 states. [2020-08-22 06:09:36,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1318 transitions. [2020-08-22 06:09:36,214 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1318 transitions. Word has length 130 [2020-08-22 06:09:36,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:09:36,215 INFO L479 AbstractCegarLoop]: Abstraction has 1085 states and 1318 transitions. [2020-08-22 06:09:36,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 06:09:36,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1318 transitions. [2020-08-22 06:09:36,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-08-22 06:09:36,221 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:09:36,221 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:09:36,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 06:09:36,222 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:09:36,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:09:36,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1477382459, now seen corresponding path program 1 times [2020-08-22 06:09:36,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:09:36,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938901438] [2020-08-22 06:09:36,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:09:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:36,535 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:09:36,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:09:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:36,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:09:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:36,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:09:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:36,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:09:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:36,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:09:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:36,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 06:09:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:36,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:09:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:36,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:09:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:36,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:09:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:36,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:09:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:36,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:09:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:36,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:09:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:36,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:09:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:36,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 06:09:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:36,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:09:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:36,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 06:09:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:36,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-22 06:09:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:36,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:09:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:36,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-22 06:09:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:36,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 06:09:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:36,746 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 06:09:36,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938901438] [2020-08-22 06:09:36,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:09:36,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 06:09:36,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181125360] [2020-08-22 06:09:36,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 06:09:36,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:09:36,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 06:09:36,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 06:09:36,749 INFO L87 Difference]: Start difference. First operand 1085 states and 1318 transitions. Second operand 12 states. [2020-08-22 06:09:37,223 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:09:37,471 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:09:37,704 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:09:38,386 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:09:38,659 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:09:38,915 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:09:39,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:09:39,964 INFO L93 Difference]: Finished difference Result 1969 states and 2463 transitions. [2020-08-22 06:09:39,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 06:09:39,964 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 126 [2020-08-22 06:09:39,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:09:39,970 INFO L225 Difference]: With dead ends: 1969 [2020-08-22 06:09:39,970 INFO L226 Difference]: Without dead ends: 908 [2020-08-22 06:09:39,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 06:09:39,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-08-22 06:09:40,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 856. [2020-08-22 06:09:40,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 856 states. [2020-08-22 06:09:40,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1029 transitions. [2020-08-22 06:09:40,145 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1029 transitions. Word has length 126 [2020-08-22 06:09:40,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:09:40,145 INFO L479 AbstractCegarLoop]: Abstraction has 856 states and 1029 transitions. [2020-08-22 06:09:40,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 06:09:40,145 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1029 transitions. [2020-08-22 06:09:40,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-22 06:09:40,150 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:09:40,151 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:09:40,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 06:09:40,151 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:09:40,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:09:40,151 INFO L82 PathProgramCache]: Analyzing trace with hash -41255168, now seen corresponding path program 1 times [2020-08-22 06:09:40,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:09:40,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138870079] [2020-08-22 06:09:40,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:09:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:40,529 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:09:40,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:09:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:40,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:09:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:40,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:09:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:40,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:09:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:40,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:09:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:40,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 06:09:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:40,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:09:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:40,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:09:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:40,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:09:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:40,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:09:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:40,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:09:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:40,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:09:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:40,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:09:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:40,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:09:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:40,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 06:09:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:40,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:09:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:40,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 06:09:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:40,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 06:09:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:40,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:09:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:40,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 06:09:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:40,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 06:09:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 06:09:40,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138870079] [2020-08-22 06:09:40,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:09:40,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 06:09:40,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509223589] [2020-08-22 06:09:40,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 06:09:40,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:09:40,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 06:09:40,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 06:09:40,791 INFO L87 Difference]: Start difference. First operand 856 states and 1029 transitions. Second operand 12 states. [2020-08-22 06:09:41,360 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:09:42,172 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:09:42,461 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:09:42,709 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:09:42,940 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:09:43,165 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:09:43,532 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:09:44,113 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:09:44,387 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:09:44,663 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:09:46,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:09:46,359 INFO L93 Difference]: Finished difference Result 2072 states and 2648 transitions. [2020-08-22 06:09:46,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 06:09:46,360 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-22 06:09:46,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:09:46,369 INFO L225 Difference]: With dead ends: 2072 [2020-08-22 06:09:46,370 INFO L226 Difference]: Without dead ends: 1389 [2020-08-22 06:09:46,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-08-22 06:09:46,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2020-08-22 06:09:46,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1217. [2020-08-22 06:09:46,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2020-08-22 06:09:46,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1483 transitions. [2020-08-22 06:09:46,597 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1483 transitions. Word has length 130 [2020-08-22 06:09:46,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:09:46,599 INFO L479 AbstractCegarLoop]: Abstraction has 1217 states and 1483 transitions. [2020-08-22 06:09:46,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 06:09:46,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1483 transitions. [2020-08-22 06:09:46,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-22 06:09:46,606 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:09:46,607 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:09:46,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 06:09:46,607 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:09:46,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:09:46,608 INFO L82 PathProgramCache]: Analyzing trace with hash -786970621, now seen corresponding path program 1 times [2020-08-22 06:09:46,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:09:46,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441232624] [2020-08-22 06:09:46,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:09:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:46,912 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:09:46,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:09:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:46,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:09:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:46,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:09:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:46,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:09:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:46,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:09:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:46,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 06:09:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:46,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 06:09:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:47,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:09:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:47,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:09:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:47,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:09:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:47,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:09:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:47,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:09:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:47,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:09:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:47,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:09:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:47,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 06:09:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:47,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:09:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:47,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 06:09:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:47,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:09:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:47,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:09:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:47,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:09:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:47,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 06:09:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:47,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:09:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:47,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 06:09:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:47,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 06:09:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:47,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 06:09:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:47,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-22 06:09:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:09:47,178 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-22 06:09:47,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441232624] [2020-08-22 06:09:47,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:09:47,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 06:09:47,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949766445] [2020-08-22 06:09:47,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 06:09:47,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:09:47,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 06:09:47,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-22 06:09:47,185 INFO L87 Difference]: Start difference. First operand 1217 states and 1483 transitions. Second operand 13 states. [2020-08-22 06:09:48,128 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:09:48,370 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:09:48,587 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:09:49,047 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:09:50,209 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:09:51,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:09:51,280 INFO L93 Difference]: Finished difference Result 2226 states and 2782 transitions. [2020-08-22 06:09:51,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 06:09:51,286 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 163 [2020-08-22 06:09:51,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:09:51,293 INFO L225 Difference]: With dead ends: 2226 [2020-08-22 06:09:51,294 INFO L226 Difference]: Without dead ends: 1233 [2020-08-22 06:09:51,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2020-08-22 06:09:51,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-08-22 06:09:51,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 911. [2020-08-22 06:09:51,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2020-08-22 06:09:51,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1058 transitions. [2020-08-22 06:09:51,496 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1058 transitions. Word has length 163 [2020-08-22 06:09:51,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:09:51,496 INFO L479 AbstractCegarLoop]: Abstraction has 911 states and 1058 transitions. [2020-08-22 06:09:51,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 06:09:51,497 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1058 transitions. [2020-08-22 06:09:51,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-22 06:09:51,500 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:09:51,500 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:09:51,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 06:09:51,501 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:09:51,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:09:51,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1876724494, now seen corresponding path program 2 times [2020-08-22 06:09:51,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:09:51,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158772675] [2020-08-22 06:09:51,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:09:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 06:09:51,563 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 06:09:51,563 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 06:09:51,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 06:09:51,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:09:51 BoogieIcfgContainer [2020-08-22 06:09:51,599 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 06:09:51,601 INFO L168 Benchmark]: Toolchain (without parser) took 44010.05 ms. Allocated memory was 142.6 MB in the beginning and 716.7 MB in the end (delta: 574.1 MB). Free memory was 100.7 MB in the beginning and 370.4 MB in the end (delta: -269.7 MB). Peak memory consumption was 304.4 MB. Max. memory is 7.1 GB. [2020-08-22 06:09:51,602 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 142.6 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 06:09:51,602 INFO L168 Benchmark]: CACSL2BoogieTranslator took 666.31 ms. Allocated memory was 142.6 MB in the beginning and 200.8 MB in the end (delta: 58.2 MB). Free memory was 100.4 MB in the beginning and 167.4 MB in the end (delta: -66.9 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-08-22 06:09:51,603 INFO L168 Benchmark]: Boogie Preprocessor took 95.42 ms. Allocated memory is still 200.8 MB. Free memory was 167.4 MB in the beginning and 161.4 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 7.1 GB. [2020-08-22 06:09:51,604 INFO L168 Benchmark]: RCFGBuilder took 1055.05 ms. Allocated memory was 200.8 MB in the beginning and 233.3 MB in the end (delta: 32.5 MB). Free memory was 161.4 MB in the beginning and 191.1 MB in the end (delta: -29.7 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. [2020-08-22 06:09:51,604 INFO L168 Benchmark]: TraceAbstraction took 42188.72 ms. Allocated memory was 233.3 MB in the beginning and 716.7 MB in the end (delta: 483.4 MB). Free memory was 191.1 MB in the beginning and 370.4 MB in the end (delta: -179.3 MB). Peak memory consumption was 304.1 MB. Max. memory is 7.1 GB. [2020-08-22 06:09:51,608 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 142.6 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 666.31 ms. Allocated memory was 142.6 MB in the beginning and 200.8 MB in the end (delta: 58.2 MB). Free memory was 100.4 MB in the beginning and 167.4 MB in the end (delta: -66.9 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.42 ms. Allocated memory is still 200.8 MB. Free memory was 167.4 MB in the beginning and 161.4 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1055.05 ms. Allocated memory was 200.8 MB in the beginning and 233.3 MB in the end (delta: 32.5 MB). Free memory was 161.4 MB in the beginning and 191.1 MB in the end (delta: -29.7 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42188.72 ms. Allocated memory was 233.3 MB in the beginning and 716.7 MB in the end (delta: 483.4 MB). Free memory was 191.1 MB in the beginning and 370.4 MB in the end (delta: -179.3 MB). Peak memory consumption was 304.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 752]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L238] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int pumpRunning = 0; [L556] int systemActive = 1; [L757] int cleanupTimeShifts = 4; [L853] int waterLevel = 1; [L854] int methaneLevelCritical = 0; [L830] int retValue_acc ; [L831] int tmp ; [L835] FCALL select_helpers() [L836] FCALL select_features() [L837] CALL, EXPR valid_product() [L464] int retValue_acc ; [L467] retValue_acc = 1 [L468] return (retValue_acc); [L837] RET, EXPR valid_product() [L837] tmp = valid_product() [L839] COND TRUE \read(tmp) [L841] FCALL setup() [L842] CALL runTest() [L824] CALL test() [L480] int splverifierCounter ; [L481] int tmp ; [L482] int tmp___0 ; [L483] int tmp___1 ; [L484] int tmp___2 ; [L487] splverifierCounter = 0 [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND TRUE \read(tmp) [L501] CALL waterRise() [L871] COND TRUE waterLevel < 2 [L872] waterLevel = waterLevel + 1 [L501] RET waterRise() [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND FALSE !(\read(pumpRunning)) [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND TRUE ! pumpRunning [L596] CALL, EXPR isHighWaterLevel() [L706] int retValue_acc ; [L707] int tmp ; [L708] int tmp___0 ; [L712] CALL, EXPR isHighWaterSensorDry() [L933] int retValue_acc ; [L936] COND FALSE !(waterLevel < 2) [L940] retValue_acc = 0 [L941] return (retValue_acc); [L712] RET, EXPR isHighWaterSensorDry() [L712] tmp = isHighWaterSensorDry() [L714] COND FALSE !(\read(tmp)) [L717] tmp___0 = 1 [L719] retValue_acc = tmp___0 [L720] return (retValue_acc); [L596] RET, EXPR isHighWaterLevel() [L596] tmp = isHighWaterLevel() [L598] COND TRUE \read(tmp) [L600] CALL activatePump() [L625] int tmp ; [L629] CALL, EXPR isMethaneAlarm() [L650] int retValue_acc ; [L654] CALL, EXPR isMethaneLevelCritical() [L892] int retValue_acc ; [L895] retValue_acc = methaneLevelCritical [L896] return (retValue_acc); [L654] RET, EXPR isMethaneLevelCritical() [L654] retValue_acc = isMethaneLevelCritical() [L656] return (retValue_acc); [L629] RET, EXPR isMethaneAlarm() [L629] tmp = isMethaneAlarm() [L631] COND FALSE !(\read(tmp)) [L635] CALL activatePump__wrappee__highWaterSensor() [L619] pumpRunning = 1 [L635] RET activatePump__wrappee__highWaterSensor() [L600] RET activatePump() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L536] RET timeShift() [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L536] RET timeShift() [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND TRUE tmp == 0 [L53] CALL, EXPR isPumpRunning() [L661] int retValue_acc ; [L664] retValue_acc = pumpRunning [L665] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L752] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 232 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 42.0s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 35.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1357 SDtfs, 3146 SDslu, 1751 SDs, 0 SdLazy, 8576 SolverSat, 2309 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 475 GetRequests, 314 SyntacticMatches, 6 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 14.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1217occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 10 MinimizatonAttempts, 1059 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 1067 NumberOfCodeBlocks, 1067 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 891 ConstructedInterpolants, 0 QuantifiedInterpolants, 329447 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 152/172 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...