/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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_spec1_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:10:26,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:10:26,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:10:26,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:10:26,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:10:26,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:10:26,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:10:26,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:10:26,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:10:26,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:10:26,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:10:26,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:10:26,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:10:26,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:10:26,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:10:26,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:10:26,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:10:26,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:10:26,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:10:26,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:10:26,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:10:26,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:10:26,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:10:26,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:10:26,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:10:26,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:10:26,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:10:26,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:10:26,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:10:26,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:10:26,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:10:26,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:10:26,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:10:26,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:10:26,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:10:26,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:10:26,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:10:26,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:10:26,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:10:26,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:10:26,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:10:26,374 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 01:10:26,397 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:10:26,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:10:26,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:10:26,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:10:26,399 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:10:26,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:10:26,400 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:10:26,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:10:26,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:10:26,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:10:26,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:10:26,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:10:26,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:10:26,401 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:10:26,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:10:26,401 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:10:26,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:10:26,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:10:26,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:10:26,402 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:10:26,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:10:26,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:10:26,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:10:26,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:10:26,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:10:26,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:10:26,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:10:26,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:10:26,404 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:10:26,404 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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:10:26,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:10:26,734 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:10:26,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:10:26,738 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:10:26,739 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:10:26,740 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c [2020-08-22 01:10:26,801 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/382a6d8ae/1327aa3be91f4d91b5c513f571dd65f1/FLAGa9e5f28f6 [2020-08-22 01:10:27,314 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:10:27,315 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c [2020-08-22 01:10:27,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/382a6d8ae/1327aa3be91f4d91b5c513f571dd65f1/FLAGa9e5f28f6 [2020-08-22 01:10:27,581 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/382a6d8ae/1327aa3be91f4d91b5c513f571dd65f1 [2020-08-22 01:10:27,593 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:10:27,596 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:10:27,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:10:27,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:10:27,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:10:27,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:10:27" (1/1) ... [2020-08-22 01:10:27,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283a534f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:10:27, skipping insertion in model container [2020-08-22 01:10:27,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:10:27" (1/1) ... [2020-08-22 01:10:27,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:10:27,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:10:28,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:10:28,126 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:10:28,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:10:28,238 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:10:28,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:10:28 WrapperNode [2020-08-22 01:10:28,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:10:28,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:10:28,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:10:28,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:10:28,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:10:28" (1/1) ... [2020-08-22 01:10:28,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:10:28" (1/1) ... [2020-08-22 01:10:28,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:10:28" (1/1) ... [2020-08-22 01:10:28,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:10:28" (1/1) ... [2020-08-22 01:10:28,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:10:28" (1/1) ... [2020-08-22 01:10:28,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:10:28" (1/1) ... [2020-08-22 01:10:28,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:10:28" (1/1) ... [2020-08-22 01:10:28,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:10:28,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:10:28,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:10:28,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:10:28,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:10:28" (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 01:10:28,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:10:28,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:10:28,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 01:10:28,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 01:10:28,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 01:10:28,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 01:10:28,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 01:10:28,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 01:10:28,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 01:10:28,418 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 01:10:28,418 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 01:10:28,418 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 01:10:28,418 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 01:10:28,418 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:10:28,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 01:10:28,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 01:10:28,419 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 01:10:28,419 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 01:10:28,419 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 01:10:28,419 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 01:10:28,419 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 01:10:28,420 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 01:10:28,420 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 01:10:28,420 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 01:10:28,420 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 01:10:28,420 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 01:10:28,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 01:10:28,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 01:10:28,421 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 01:10:28,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 01:10:28,421 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 01:10:28,421 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 01:10:28,421 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 01:10:28,421 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 01:10:28,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 01:10:28,422 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 01:10:28,422 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 01:10:28,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 01:10:28,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:10:28,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:10:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 01:10:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 01:10:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 01:10:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 01:10:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 01:10:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 01:10:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 01:10:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 01:10:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 01:10:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 01:10:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 01:10:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 01:10:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 01:10:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 01:10:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 01:10:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 01:10:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 01:10:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 01:10:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 01:10:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 01:10:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 01:10:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 01:10:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 01:10:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 01:10:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 01:10:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 01:10:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 01:10:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 01:10:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 01:10:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 01:10:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:10:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 01:10:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 01:10:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 01:10:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 01:10:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 01:10:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 01:10:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 01:10:28,429 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 01:10:28,429 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 01:10:28,429 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 01:10:28,429 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 01:10:28,429 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 01:10:28,429 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 01:10:28,430 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 01:10:28,430 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 01:10:28,430 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 01:10:28,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:10:28,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 01:10:28,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:10:29,517 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:10:29,518 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 01:10:29,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:10:29 BoogieIcfgContainer [2020-08-22 01:10:29,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:10:29,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:10:29,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:10:29,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:10:29,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:10:27" (1/3) ... [2020-08-22 01:10:29,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63693533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:10:29, skipping insertion in model container [2020-08-22 01:10:29,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:10:28" (2/3) ... [2020-08-22 01:10:29,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63693533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:10:29, skipping insertion in model container [2020-08-22 01:10:29,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:10:29" (3/3) ... [2020-08-22 01:10:29,531 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product37.cil.c [2020-08-22 01:10:29,540 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:10:29,548 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:10:29,561 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:10:29,585 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:10:29,585 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:10:29,585 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:10:29,586 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:10:29,586 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:10:29,586 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:10:29,586 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:10:29,586 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:10:29,608 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-08-22 01:10:29,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 01:10:29,617 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:10:29,618 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 01:10:29,618 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:10:29,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:10:29,623 INFO L82 PathProgramCache]: Analyzing trace with hash -749162492, now seen corresponding path program 1 times [2020-08-22 01:10:29,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:10:29,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565389015] [2020-08-22 01:10:29,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:10:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:30,277 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:10:30,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:10:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:30,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:10:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:30,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:10:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:30,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:10:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:30,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:10:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:30,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:10:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:30,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:10:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:30,360 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 01:10:30,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565389015] [2020-08-22 01:10:30,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:10:30,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 01:10:30,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555729688] [2020-08-22 01:10:30,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 01:10:30,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:10:30,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 01:10:30,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 01:10:30,388 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-08-22 01:10:31,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:10:31,458 INFO L93 Difference]: Finished difference Result 287 states and 378 transitions. [2020-08-22 01:10:31,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 01:10:31,461 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 01:10:31,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:10:31,477 INFO L225 Difference]: With dead ends: 287 [2020-08-22 01:10:31,477 INFO L226 Difference]: Without dead ends: 155 [2020-08-22 01:10:31,482 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 01:10:31,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-22 01:10:31,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-22 01:10:31,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-22 01:10:31,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 145 transitions. [2020-08-22 01:10:31,568 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 145 transitions. Word has length 46 [2020-08-22 01:10:31,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:10:31,569 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 145 transitions. [2020-08-22 01:10:31,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 01:10:31,569 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 145 transitions. [2020-08-22 01:10:31,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 01:10:31,573 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:10:31,573 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 01:10:31,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:10:31,573 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:10:31,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:10:31,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1435333190, now seen corresponding path program 1 times [2020-08-22 01:10:31,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:10:31,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821974313] [2020-08-22 01:10:31,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:10:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:31,893 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:10:31,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:10:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:31,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:10:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:31,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:10:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:31,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:10:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:31,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:10:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:31,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:10:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:31,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 01:10:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:31,977 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 01:10:31,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821974313] [2020-08-22 01:10:31,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:10:31,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 01:10:31,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055171523] [2020-08-22 01:10:31,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 01:10:31,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:10:31,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 01:10:31,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:10:31,982 INFO L87 Difference]: Start difference. First operand 123 states and 145 transitions. Second operand 4 states. [2020-08-22 01:10:32,394 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:33,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:10:33,265 INFO L93 Difference]: Finished difference Result 220 states and 269 transitions. [2020-08-22 01:10:33,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:10:33,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 01:10:33,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:10:33,274 INFO L225 Difference]: With dead ends: 220 [2020-08-22 01:10:33,274 INFO L226 Difference]: Without dead ends: 139 [2020-08-22 01:10:33,276 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 01:10:33,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-22 01:10:33,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-22 01:10:33,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-22 01:10:33,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-08-22 01:10:33,314 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 47 [2020-08-22 01:10:33,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:10:33,314 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-08-22 01:10:33,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 01:10:33,315 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-08-22 01:10:33,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 01:10:33,317 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:10:33,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:10:33,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:10:33,318 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:10:33,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:10:33,318 INFO L82 PathProgramCache]: Analyzing trace with hash 325618258, now seen corresponding path program 1 times [2020-08-22 01:10:33,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:10:33,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958337182] [2020-08-22 01:10:33,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:10:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:33,665 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:10:33,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:10:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:33,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:10:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:33,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:10:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:33,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:10:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:33,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:10:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:33,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:10:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:33,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 01:10:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:33,785 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 01:10:33,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958337182] [2020-08-22 01:10:33,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:10:33,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 01:10:33,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000331607] [2020-08-22 01:10:33,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:10:33,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:10:33,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:10:33,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:10:33,788 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 8 states. [2020-08-22 01:10:34,210 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:10:34,516 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:10:34,789 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:10:35,056 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:10:36,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:10:36,181 INFO L93 Difference]: Finished difference Result 229 states and 283 transitions. [2020-08-22 01:10:36,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 01:10:36,182 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 01:10:36,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:10:36,185 INFO L225 Difference]: With dead ends: 229 [2020-08-22 01:10:36,185 INFO L226 Difference]: Without dead ends: 139 [2020-08-22 01:10:36,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:10:36,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-22 01:10:36,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-22 01:10:36,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-22 01:10:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2020-08-22 01:10:36,217 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 51 [2020-08-22 01:10:36,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:10:36,218 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2020-08-22 01:10:36,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:10:36,218 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2020-08-22 01:10:36,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-22 01:10:36,220 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:10:36,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:10:36,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:10:36,221 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:10:36,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:10:36,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1759847866, now seen corresponding path program 1 times [2020-08-22 01:10:36,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:10:36,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362125055] [2020-08-22 01:10:36,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:10:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:36,521 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:10:36,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:10:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:36,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:10:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:36,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:10:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:36,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:10:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:36,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:10:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:36,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 01:10:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:36,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:10:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:36,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:10:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:36,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 01:10:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:36,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 01:10:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:36,654 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 01:10:36,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362125055] [2020-08-22 01:10:36,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:10:36,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 01:10:36,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302954932] [2020-08-22 01:10:36,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 01:10:36,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:10:36,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 01:10:36,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:10:36,657 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand 6 states. [2020-08-22 01:10:36,964 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:10:38,086 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:38,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:10:38,723 INFO L93 Difference]: Finished difference Result 321 states and 399 transitions. [2020-08-22 01:10:38,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 01:10:38,724 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-22 01:10:38,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:10:38,727 INFO L225 Difference]: With dead ends: 321 [2020-08-22 01:10:38,728 INFO L226 Difference]: Without dead ends: 231 [2020-08-22 01:10:38,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-22 01:10:38,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-08-22 01:10:38,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 190. [2020-08-22 01:10:38,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-22 01:10:38,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 217 transitions. [2020-08-22 01:10:38,777 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 217 transitions. Word has length 64 [2020-08-22 01:10:38,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:10:38,778 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 217 transitions. [2020-08-22 01:10:38,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 01:10:38,778 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 217 transitions. [2020-08-22 01:10:38,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-22 01:10:38,780 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:10:38,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:10:38,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:10:38,781 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:10:38,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:10:38,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1017680522, now seen corresponding path program 1 times [2020-08-22 01:10:38,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:10:38,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484526275] [2020-08-22 01:10:38,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:10:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:39,119 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:10:39,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:10:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:39,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:10:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:39,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:10:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:39,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:10:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:39,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:10:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:39,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 01:10:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:39,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:10:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:39,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:10:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:39,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:10:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:39,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:10:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:39,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:10:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:39,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 01:10:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:39,234 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 01:10:39,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484526275] [2020-08-22 01:10:39,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:10:39,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 01:10:39,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627350786] [2020-08-22 01:10:39,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:10:39,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:10:39,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:10:39,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:10:39,237 INFO L87 Difference]: Start difference. First operand 190 states and 217 transitions. Second operand 8 states. [2020-08-22 01:10:39,622 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:10:40,677 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:10:40,949 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:10:41,191 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:10:41,419 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:10:41,694 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:42,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:10:42,566 INFO L93 Difference]: Finished difference Result 565 states and 701 transitions. [2020-08-22 01:10:42,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 01:10:42,567 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-08-22 01:10:42,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:10:42,572 INFO L225 Difference]: With dead ends: 565 [2020-08-22 01:10:42,572 INFO L226 Difference]: Without dead ends: 399 [2020-08-22 01:10:42,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-22 01:10:42,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-08-22 01:10:42,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 335. [2020-08-22 01:10:42,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-22 01:10:42,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 384 transitions. [2020-08-22 01:10:42,644 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 384 transitions. Word has length 78 [2020-08-22 01:10:42,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:10:42,644 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 384 transitions. [2020-08-22 01:10:42,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:10:42,645 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 384 transitions. [2020-08-22 01:10:42,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-22 01:10:42,646 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:10:42,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:10:42,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:10:42,647 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:10:42,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:10:42,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1476513266, now seen corresponding path program 1 times [2020-08-22 01:10:42,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:10:42,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922322592] [2020-08-22 01:10:42,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:10:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:42,983 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:10:42,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:10:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:43,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:10:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:43,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:10:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:43,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:10:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:43,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:10:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:43,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:10:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:43,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 01:10:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:43,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:10:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:43,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:10:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:43,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:10:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:43,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:10:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:43,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-22 01:10:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:43,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 01:10:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:43,084 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 01:10:43,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922322592] [2020-08-22 01:10:43,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:10:43,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:10:43,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432097276] [2020-08-22 01:10:43,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:10:43,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:10:43,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:10:43,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:10:43,087 INFO L87 Difference]: Start difference. First operand 335 states and 384 transitions. Second operand 9 states. [2020-08-22 01:10:43,515 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:10:44,546 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:10:44,795 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:10:45,063 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:10:45,317 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:10:45,602 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:46,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:10:46,618 INFO L93 Difference]: Finished difference Result 438 states and 552 transitions. [2020-08-22 01:10:46,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 01:10:46,619 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-08-22 01:10:46,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:10:46,624 INFO L225 Difference]: With dead ends: 438 [2020-08-22 01:10:46,624 INFO L226 Difference]: Without dead ends: 435 [2020-08-22 01:10:46,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 01:10:46,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-08-22 01:10:46,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 335. [2020-08-22 01:10:46,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-22 01:10:46,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 383 transitions. [2020-08-22 01:10:46,691 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 383 transitions. Word has length 82 [2020-08-22 01:10:46,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:10:46,692 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 383 transitions. [2020-08-22 01:10:46,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:10:46,692 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 383 transitions. [2020-08-22 01:10:46,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 01:10:46,694 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:10:46,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:10:46,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 01:10:46,695 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:10:46,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:10:46,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1573868364, now seen corresponding path program 1 times [2020-08-22 01:10:46,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:10:46,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574676755] [2020-08-22 01:10:46,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:10:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:46,952 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:10:46,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:10:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:46,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:10:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:46,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:10:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:46,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:10:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:46,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:10:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:46,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:10:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:46,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 01:10:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:47,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:10:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:47,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:10:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:47,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:10:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:47,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:10:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:47,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 01:10:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:47,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 01:10:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:47,113 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 01:10:47,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574676755] [2020-08-22 01:10:47,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:10:47,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:10:47,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581645383] [2020-08-22 01:10:47,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:10:47,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:10:47,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:10:47,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:10:47,115 INFO L87 Difference]: Start difference. First operand 335 states and 383 transitions. Second operand 9 states. [2020-08-22 01:10:47,936 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:10:48,208 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:10:48,454 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:48,695 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:49,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:10:49,632 INFO L93 Difference]: Finished difference Result 750 states and 926 transitions. [2020-08-22 01:10:49,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 01:10:49,633 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-22 01:10:49,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:10:49,637 INFO L225 Difference]: With dead ends: 750 [2020-08-22 01:10:49,637 INFO L226 Difference]: Without dead ends: 439 [2020-08-22 01:10:49,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 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 01:10:49,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-08-22 01:10:49,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 345. [2020-08-22 01:10:49,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-08-22 01:10:49,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 393 transitions. [2020-08-22 01:10:49,708 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 393 transitions. Word has length 83 [2020-08-22 01:10:49,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:10:49,709 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 393 transitions. [2020-08-22 01:10:49,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:10:49,709 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 393 transitions. [2020-08-22 01:10:49,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 01:10:49,711 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:10:49,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:10:49,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 01:10:49,711 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:10:49,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:10:49,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1596500618, now seen corresponding path program 1 times [2020-08-22 01:10:49,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:10:49,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081120069] [2020-08-22 01:10:49,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:10:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:49,970 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:10:49,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:10:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:49,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:10:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:49,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:10:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:49,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:10:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:50,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:10:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:50,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:10:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:50,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 01:10:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:50,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:10:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:50,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:10:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:50,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:10:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:50,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:10:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:50,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 01:10:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:50,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 01:10:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:50,111 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 01:10:50,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081120069] [2020-08-22 01:10:50,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:10:50,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 01:10:50,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170699240] [2020-08-22 01:10:50,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 01:10:50,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:10:50,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 01:10:50,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 01:10:50,117 INFO L87 Difference]: Start difference. First operand 345 states and 393 transitions. Second operand 11 states. [2020-08-22 01:10:50,583 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:50,823 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:51,042 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:51,600 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:51,860 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:52,108 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:10:53,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:10:53,175 INFO L93 Difference]: Finished difference Result 774 states and 966 transitions. [2020-08-22 01:10:53,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 01:10:53,176 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-08-22 01:10:53,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:10:53,182 INFO L225 Difference]: With dead ends: 774 [2020-08-22 01:10:53,182 INFO L226 Difference]: Without dead ends: 453 [2020-08-22 01:10:53,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 01:10:53,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-08-22 01:10:53,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 353. [2020-08-22 01:10:53,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-08-22 01:10:53,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 401 transitions. [2020-08-22 01:10:53,273 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 401 transitions. Word has length 83 [2020-08-22 01:10:53,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:10:53,273 INFO L479 AbstractCegarLoop]: Abstraction has 353 states and 401 transitions. [2020-08-22 01:10:53,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 01:10:53,273 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 401 transitions. [2020-08-22 01:10:53,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 01:10:53,275 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:10:53,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:10:53,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 01:10:53,276 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:10:53,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:10:53,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1672974679, now seen corresponding path program 1 times [2020-08-22 01:10:53,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:10:53,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027752609] [2020-08-22 01:10:53,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:10:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,588 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:10:53,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:10:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:10:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:10:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:10:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:10:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:10:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 01:10:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:10:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:10:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:10:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:10:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 01:10:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 01:10:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:10:53,739 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 01:10:53,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027752609] [2020-08-22 01:10:53,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:10:53,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 01:10:53,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425924548] [2020-08-22 01:10:53,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 01:10:53,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:10:53,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 01:10:53,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:10:53,741 INFO L87 Difference]: Start difference. First operand 353 states and 401 transitions. Second operand 7 states. [2020-08-22 01:10:54,091 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:10:54,594 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:10:56,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:10:56,461 INFO L93 Difference]: Finished difference Result 1077 states and 1388 transitions. [2020-08-22 01:10:56,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 01:10:56,462 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-08-22 01:10:56,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:10:56,467 INFO L225 Difference]: With dead ends: 1077 [2020-08-22 01:10:56,467 INFO L226 Difference]: Without dead ends: 748 [2020-08-22 01:10:56,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-22 01:10:56,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-08-22 01:10:56,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 649. [2020-08-22 01:10:56,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-22 01:10:56,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 771 transitions. [2020-08-22 01:10:56,597 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 771 transitions. Word has length 83 [2020-08-22 01:10:56,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:10:56,600 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 771 transitions. [2020-08-22 01:10:56,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 01:10:56,601 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 771 transitions. [2020-08-22 01:10:56,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-22 01:10:56,606 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:10:56,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:10:56,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 01:10:56,606 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:10:56,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:10:56,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1457224847, now seen corresponding path program 1 times [2020-08-22 01:10:56,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:10:56,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022506797] [2020-08-22 01:10:56,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:10:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 01:10:56,662 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 01:10:56,663 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 01:10:56,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 01:10:56,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 01:10:56 BoogieIcfgContainer [2020-08-22 01:10:56,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 01:10:56,692 INFO L168 Benchmark]: Toolchain (without parser) took 29096.63 ms. Allocated memory was 146.3 MB in the beginning and 608.7 MB in the end (delta: 462.4 MB). Free memory was 101.3 MB in the beginning and 307.0 MB in the end (delta: -205.7 MB). Peak memory consumption was 256.7 MB. Max. memory is 7.1 GB. [2020-08-22 01:10:56,693 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 01:10:56,693 INFO L168 Benchmark]: CACSL2BoogieTranslator took 643.77 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 101.1 MB in the beginning and 171.4 MB in the end (delta: -70.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-08-22 01:10:56,694 INFO L168 Benchmark]: Boogie Preprocessor took 108.26 ms. Allocated memory is still 203.4 MB. Free memory was 171.4 MB in the beginning and 167.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-22 01:10:56,695 INFO L168 Benchmark]: RCFGBuilder took 1172.37 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 167.2 MB in the beginning and 198.3 MB in the end (delta: -31.1 MB). Peak memory consumption was 85.3 MB. Max. memory is 7.1 GB. [2020-08-22 01:10:56,696 INFO L168 Benchmark]: TraceAbstraction took 27165.97 ms. Allocated memory was 234.9 MB in the beginning and 608.7 MB in the end (delta: 373.8 MB). Free memory was 196.8 MB in the beginning and 307.0 MB in the end (delta: -110.2 MB). Peak memory consumption was 263.6 MB. Max. memory is 7.1 GB. [2020-08-22 01:10:56,699 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 643.77 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 101.1 MB in the beginning and 171.4 MB in the end (delta: -70.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.26 ms. Allocated memory is still 203.4 MB. Free memory was 171.4 MB in the beginning and 167.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1172.37 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 167.2 MB in the beginning and 198.3 MB in the end (delta: -31.1 MB). Peak memory consumption was 85.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27165.97 ms. Allocated memory was 234.9 MB in the beginning and 608.7 MB in the end (delta: 373.8 MB). Free memory was 196.8 MB in the beginning and 307.0 MB in the end (delta: -110.2 MB). Peak memory consumption was 263.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 543]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L406] int cleanupTimeShifts = 4; [L588] int pumpRunning = 0; [L589] int systemActive = 1; [L832] int waterLevel = 1; [L833] int methaneLevelCritical = 0; [L487] int retValue_acc ; [L488] int tmp ; [L492] FCALL select_helpers() [L493] FCALL select_features() [L494] CALL, EXPR valid_product() [L574] int retValue_acc ; [L577] retValue_acc = 1 [L578] return (retValue_acc); [L494] RET, EXPR valid_product() [L494] tmp = valid_product() [L496] COND TRUE \read(tmp) [L498] FCALL setup() [L499] CALL runTest() [L478] CALL test() [L767] int splverifierCounter ; [L768] int tmp ; [L769] int tmp___0 ; [L770] int tmp___1 ; [L771] int tmp___2 ; [L774] splverifierCounter = 0 [L776] COND TRUE 1 [L778] COND TRUE splverifierCounter < 4 [L784] tmp = __VERIFIER_nondet_int() [L786] COND TRUE \read(tmp) [L788] CALL waterRise() [L850] COND TRUE waterLevel < 2 [L851] waterLevel = waterLevel + 1 [L788] RET waterRise() [L794] tmp___0 = __VERIFIER_nondet_int() [L796] COND TRUE \read(tmp___0) [L798] CALL changeMethaneLevel() [L862] COND FALSE !(\read(methaneLevelCritical)) [L865] methaneLevelCritical = 1 [L798] RET changeMethaneLevel() [L804] tmp___2 = __VERIFIER_nondet_int() [L806] COND TRUE \read(tmp___2) [L819] CALL timeShift() [L595] COND FALSE !(\read(pumpRunning)) [L602] COND TRUE \read(systemActive) [L604] CALL processEnvironment() [L650] int tmp ; [L653] COND FALSE !(\read(pumpRunning)) [L668] CALL processEnvironment__wrappee__highWaterSensor() [L624] int tmp ; [L627] COND TRUE ! pumpRunning [L629] CALL, EXPR isHighWaterLevel() [L747] int retValue_acc ; [L748] int tmp ; [L749] int tmp___0 ; [L753] CALL, EXPR isHighWaterSensorDry() [L912] int retValue_acc ; [L915] COND FALSE !(waterLevel < 2) [L919] retValue_acc = 0 [L920] return (retValue_acc); [L753] RET, EXPR isHighWaterSensorDry() [L753] tmp = isHighWaterSensorDry() [L755] COND FALSE !(\read(tmp)) [L758] tmp___0 = 1 [L760] retValue_acc = tmp___0 [L761] return (retValue_acc); [L629] RET, EXPR isHighWaterLevel() [L629] tmp = isHighWaterLevel() [L631] COND TRUE \read(tmp) [L633] CALL activatePump() [L678] pumpRunning = 1 [L633] RET activatePump() [L668] RET processEnvironment__wrappee__highWaterSensor() [L604] RET processEnvironment() [L610] CALL __utac_acc__Specification1_spec__1() [L514] int tmp ; [L515] int tmp___0 ; [L519] CALL, EXPR isMethaneLevelCritical() [L871] int retValue_acc ; [L874] retValue_acc = methaneLevelCritical [L875] return (retValue_acc); [L519] RET, EXPR isMethaneLevelCritical() [L519] tmp = isMethaneLevelCritical() [L521] COND TRUE \read(tmp) [L523] CALL, EXPR isPumpRunning() [L702] int retValue_acc ; [L705] retValue_acc = pumpRunning [L706] return (retValue_acc); [L523] RET, EXPR isPumpRunning() [L523] tmp___0 = isPumpRunning() [L525] COND TRUE \read(tmp___0) [L527] CALL __automaton_fail() [L543] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 22.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1009 SDtfs, 1711 SDslu, 946 SDs, 0 SdLazy, 4736 SolverSat, 1065 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 316 GetRequests, 219 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 9.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=649occurred 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: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 580 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 704 NumberOfCodeBlocks, 704 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 608 ConstructedInterpolants, 0 QuantifiedInterpolants, 186785 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...