/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:33:38,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:33:38,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:33:38,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:33:38,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:33:38,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:33:38,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:33:38,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:33:38,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:33:38,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:33:38,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:33:38,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:33:38,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:33:38,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:33:38,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:33:38,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:33:38,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:33:38,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:33:38,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:33:38,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:33:38,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:33:38,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:33:38,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:33:38,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:33:38,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:33:38,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:33:38,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:33:38,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:33:38,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:33:38,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 18:33:38,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:33:38,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:33:38,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:33:38,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:33:38,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:33:38,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:33:38,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:33:38,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:33:38,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:33:38,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:33:38,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:33:38,422 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 [2020-08-18 18:33:38,464 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:33:38,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:33:38,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:33:38,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:33:38,467 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:33:38,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:33:38,468 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:33:38,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:33:38,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:33:38,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:33:38,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:33:38,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:33:38,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:33:38,470 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:33:38,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:33:38,471 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:33:38,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:33:38,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:33:38,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:33:38,471 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:33:38,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:33:38,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:33:38,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:33:38,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:33:38,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:33:38,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:33:38,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:33:38,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:33:38,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:33:38,473 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:33:38,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:33:38,798 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:33:38,803 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:33:38,805 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:33:38,806 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:33:38,806 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product38.cil.c [2020-08-18 18:33:38,880 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5dac7ae15/59f9494c0c6f4d79bd09426c17192d27/FLAG379ef9a87 [2020-08-18 18:33:39,431 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:33:39,432 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product38.cil.c [2020-08-18 18:33:39,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5dac7ae15/59f9494c0c6f4d79bd09426c17192d27/FLAG379ef9a87 [2020-08-18 18:33:39,799 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5dac7ae15/59f9494c0c6f4d79bd09426c17192d27 [2020-08-18 18:33:39,808 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:33:39,809 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:33:39,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:33:39,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:33:39,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:33:39,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:33:39" (1/1) ... [2020-08-18 18:33:39,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a35e781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:33:39, skipping insertion in model container [2020-08-18 18:33:39,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:33:39" (1/1) ... [2020-08-18 18:33:39,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:33:39,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:33:40,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:33:40,289 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:33:40,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:33:40,404 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:33:40,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:33:40 WrapperNode [2020-08-18 18:33:40,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:33:40,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:33:40,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:33:40,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:33:40,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:33:40" (1/1) ... [2020-08-18 18:33:40,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:33:40" (1/1) ... [2020-08-18 18:33:40,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:33:40" (1/1) ... [2020-08-18 18:33:40,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:33:40" (1/1) ... [2020-08-18 18:33:40,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:33:40" (1/1) ... [2020-08-18 18:33:40,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:33:40" (1/1) ... [2020-08-18 18:33:40,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:33:40" (1/1) ... [2020-08-18 18:33:40,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:33:40,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:33:40,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:33:40,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:33:40,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:33:40" (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 [2020-08-18 18:33:40,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:33:40,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:33:40,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 18:33:40,599 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 18:33:40,600 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 18:33:40,600 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 18:33:40,600 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 18:33:40,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:33:40,601 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 18:33:40,601 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 18:33:40,602 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 18:33:40,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 18:33:40,602 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 18:33:40,602 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 18:33:40,603 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 18:33:40,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 18:33:40,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 18:33:40,604 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 18:33:40,604 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 18:33:40,604 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 18:33:40,605 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 18:33:40,605 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 18:33:40,605 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 18:33:40,605 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 18:33:40,605 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 18:33:40,606 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 18:33:40,606 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 18:33:40,607 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 18:33:40,607 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 18:33:40,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 18:33:40,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 18:33:40,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 18:33:40,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 18:33:40,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 18:33:40,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 18:33:40,608 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 18:33:40,608 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 18:33:40,608 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 18:33:40,609 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 18:33:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:33:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:33:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 18:33:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 18:33:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 18:33:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 18:33:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 18:33:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 18:33:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 18:33:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 18:33:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 18:33:40,611 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 18:33:40,611 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 18:33:40,611 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 18:33:40,611 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 18:33:40,611 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:33:40,612 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 18:33:40,612 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 18:33:40,612 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 18:33:40,612 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 18:33:40,612 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 18:33:40,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 18:33:40,613 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 18:33:40,613 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 18:33:40,613 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 18:33:40,613 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 18:33:40,613 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 18:33:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 18:33:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 18:33:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 18:33:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 18:33:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 18:33:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 18:33:40,615 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 18:33:40,615 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 18:33:40,616 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 18:33:40,616 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 18:33:40,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 18:33:40,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 18:33:40,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:33:40,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 18:33:40,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 18:33:40,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:33:40,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 18:33:40,619 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 18:33:40,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:33:40,619 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 18:33:40,619 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 18:33:40,619 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 18:33:40,619 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 18:33:40,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:33:40,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 18:33:40,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:33:41,772 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:33:41,773 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 18:33:41,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:33:41 BoogieIcfgContainer [2020-08-18 18:33:41,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:33:41,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:33:41,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:33:41,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:33:41,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:33:39" (1/3) ... [2020-08-18 18:33:41,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4d86c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:33:41, skipping insertion in model container [2020-08-18 18:33:41,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:33:40" (2/3) ... [2020-08-18 18:33:41,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4d86c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:33:41, skipping insertion in model container [2020-08-18 18:33:41,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:33:41" (3/3) ... [2020-08-18 18:33:41,793 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product38.cil.c [2020-08-18 18:33:41,804 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:33:41,813 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:33:41,827 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:33:41,848 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:33:41,849 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:33:41,849 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:33:41,849 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:33:41,849 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:33:41,849 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:33:41,849 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:33:41,849 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:33:41,870 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2020-08-18 18:33:41,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 18:33:41,879 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:33:41,880 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] [2020-08-18 18:33:41,880 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:33:41,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:33:41,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1463974042, now seen corresponding path program 1 times [2020-08-18 18:33:41,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:33:41,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821580666] [2020-08-18 18:33:41,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:33:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:42,511 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:33:42,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:33:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:42,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:33:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:42,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:33:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:42,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:33:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:42,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:33:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:42,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:33:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:42,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:33:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:42,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:33:42,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821580666] [2020-08-18 18:33:42,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:33:42,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 18:33:42,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441652248] [2020-08-18 18:33:42,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 18:33:42,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:33:42,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 18:33:42,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 18:33:42,655 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 3 states. [2020-08-18 18:33:43,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:33:43,738 INFO L93 Difference]: Finished difference Result 302 states and 392 transitions. [2020-08-18 18:33:43,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 18:33:43,740 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 18:33:43,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:33:43,755 INFO L225 Difference]: With dead ends: 302 [2020-08-18 18:33:43,755 INFO L226 Difference]: Without dead ends: 163 [2020-08-18 18:33:43,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 18:33:43,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-08-18 18:33:43,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 130. [2020-08-18 18:33:43,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-18 18:33:43,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-08-18 18:33:43,847 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 46 [2020-08-18 18:33:43,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:33:43,848 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-08-18 18:33:43,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 18:33:43,848 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-08-18 18:33:43,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 18:33:43,851 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:33:43,852 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] [2020-08-18 18:33:43,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:33:43,852 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:33:43,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:33:43,853 INFO L82 PathProgramCache]: Analyzing trace with hash 842471544, now seen corresponding path program 1 times [2020-08-18 18:33:43,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:33:43,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856263790] [2020-08-18 18:33:43,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:33:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:44,256 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:33:44,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:33:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:44,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:33:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:44,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:33:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:44,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:33:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:44,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:33:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:44,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:33:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:44,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 18:33:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:44,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:33:44,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856263790] [2020-08-18 18:33:44,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:33:44,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:33:44,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325873759] [2020-08-18 18:33:44,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:33:44,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:33:44,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:33:44,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:33:44,325 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 4 states. [2020-08-18 18:33:44,717 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:33:45,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:33:45,485 INFO L93 Difference]: Finished difference Result 231 states and 279 transitions. [2020-08-18 18:33:45,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 18:33:45,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 18:33:45,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:33:45,490 INFO L225 Difference]: With dead ends: 231 [2020-08-18 18:33:45,490 INFO L226 Difference]: Without dead ends: 147 [2020-08-18 18:33:45,492 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 [2020-08-18 18:33:45,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-18 18:33:45,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 121. [2020-08-18 18:33:45,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-18 18:33:45,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2020-08-18 18:33:45,555 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 47 [2020-08-18 18:33:45,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:33:45,555 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2020-08-18 18:33:45,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:33:45,556 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2020-08-18 18:33:45,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 18:33:45,558 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:33:45,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:33:45,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:33:45,558 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:33:45,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:33:45,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1913748360, now seen corresponding path program 1 times [2020-08-18 18:33:45,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:33:45,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883308178] [2020-08-18 18:33:45,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:33:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:45,859 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:33:45,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:33:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:45,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:33:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:45,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:33:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:45,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:33:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:45,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:33:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:45,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:33:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:45,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:33:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:45,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:33:45,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883308178] [2020-08-18 18:33:45,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:33:45,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 18:33:45,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633880093] [2020-08-18 18:33:45,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:33:45,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:33:45,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:33:45,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:33:45,937 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand 8 states. [2020-08-18 18:33:46,279 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:33:46,583 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:33:46,820 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:33:47,050 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:33:48,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:33:48,189 INFO L93 Difference]: Finished difference Result 244 states and 297 transitions. [2020-08-18 18:33:48,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 18:33:48,190 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 18:33:48,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:33:48,193 INFO L225 Difference]: With dead ends: 244 [2020-08-18 18:33:48,194 INFO L226 Difference]: Without dead ends: 147 [2020-08-18 18:33:48,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 18:33:48,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-18 18:33:48,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 121. [2020-08-18 18:33:48,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-18 18:33:48,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 138 transitions. [2020-08-18 18:33:48,232 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 138 transitions. Word has length 52 [2020-08-18 18:33:48,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:33:48,233 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 138 transitions. [2020-08-18 18:33:48,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:33:48,233 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 138 transitions. [2020-08-18 18:33:48,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 18:33:48,236 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:33:48,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:33:48,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:33:48,237 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:33:48,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:33:48,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1607213040, now seen corresponding path program 1 times [2020-08-18 18:33:48,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:33:48,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723523880] [2020-08-18 18:33:48,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:33:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:48,527 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:33:48,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:33:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:48,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:33:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:48,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:33:48,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:48,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:33:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:48,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:33:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:48,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 18:33:48,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:48,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:33:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:48,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:33:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:48,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 18:33:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:48,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 18:33:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:48,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:33:48,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723523880] [2020-08-18 18:33:48,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:33:48,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:33:48,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180508385] [2020-08-18 18:33:48,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:33:48,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:33:48,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:33:48,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:33:48,626 INFO L87 Difference]: Start difference. First operand 121 states and 138 transitions. Second operand 6 states. [2020-08-18 18:33:48,948 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:33:50,101 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:33:50,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:33:50,768 INFO L93 Difference]: Finished difference Result 341 states and 419 transitions. [2020-08-18 18:33:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 18:33:50,769 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-18 18:33:50,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:33:50,773 INFO L225 Difference]: With dead ends: 341 [2020-08-18 18:33:50,774 INFO L226 Difference]: Without dead ends: 244 [2020-08-18 18:33:50,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 18:33:50,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-18 18:33:50,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 201. [2020-08-18 18:33:50,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-08-18 18:33:50,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 227 transitions. [2020-08-18 18:33:50,853 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 227 transitions. Word has length 65 [2020-08-18 18:33:50,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:33:50,853 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 227 transitions. [2020-08-18 18:33:50,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:33:50,854 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 227 transitions. [2020-08-18 18:33:50,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 18:33:50,855 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:33:50,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:33:50,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 18:33:50,856 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:33:50,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:33:50,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1567646189, now seen corresponding path program 1 times [2020-08-18 18:33:50,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:33:50,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235360381] [2020-08-18 18:33:50,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:33:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:51,197 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:33:51,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:33:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:51,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:33:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:51,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:33:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:51,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:33:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:51,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:33:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:51,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 18:33:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:51,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:33:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:51,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:33:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:51,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:33:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:51,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:33:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:51,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 18:33:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:51,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 18:33:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:51,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:33:51,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235360381] [2020-08-18 18:33:51,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:33:51,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 18:33:51,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725253597] [2020-08-18 18:33:51,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 18:33:51,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:33:51,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 18:33:51,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 18:33:51,382 INFO L87 Difference]: Start difference. First operand 201 states and 227 transitions. Second operand 12 states. [2020-08-18 18:33:51,790 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:33:52,098 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:33:52,345 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:33:52,570 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:33:53,095 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:33:54,096 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:33:54,359 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:33:54,618 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:33:54,864 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:33:55,129 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:33:55,413 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:33:56,664 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:33:57,054 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:33:57,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:33:57,595 INFO L93 Difference]: Finished difference Result 707 states and 910 transitions. [2020-08-18 18:33:57,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 18:33:57,596 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-18 18:33:57,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:33:57,602 INFO L225 Difference]: With dead ends: 707 [2020-08-18 18:33:57,602 INFO L226 Difference]: Without dead ends: 530 [2020-08-18 18:33:57,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 18:33:57,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-08-18 18:33:57,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 468. [2020-08-18 18:33:57,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-08-18 18:33:57,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 547 transitions. [2020-08-18 18:33:57,707 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 547 transitions. Word has length 79 [2020-08-18 18:33:57,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:33:57,708 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 547 transitions. [2020-08-18 18:33:57,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 18:33:57,708 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 547 transitions. [2020-08-18 18:33:57,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-18 18:33:57,712 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:33:57,712 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:33:57,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 18:33:57,713 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:33:57,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:33:57,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1919635093, now seen corresponding path program 1 times [2020-08-18 18:33:57,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:33:57,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800070551] [2020-08-18 18:33:57,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:33:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:58,012 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:33:58,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:33:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:58,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:33:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:58,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:33:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:58,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:33:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:58,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:33:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:58,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 18:33:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:58,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:33:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:58,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:33:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:58,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:33:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:58,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:33:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:58,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:33:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:58,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:33:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:58,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:33:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:58,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:33:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:58,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 18:33:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:58,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 18:33:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:58,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 18:33:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:58,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:33:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:58,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:33:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:58,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 18:33:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:58,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 18:33:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:58,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-18 18:33:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:33:58,262 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-18 18:33:58,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800070551] [2020-08-18 18:33:58,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:33:58,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 18:33:58,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417674707] [2020-08-18 18:33:58,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 18:33:58,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:33:58,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 18:33:58,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 18:33:58,265 INFO L87 Difference]: Start difference. First operand 468 states and 547 transitions. Second operand 13 states. [2020-08-18 18:33:58,822 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:33:59,395 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:33:59,951 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:34:00,200 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 18:34:00,470 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:34:00,733 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:34:00,964 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:34:01,217 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 18:34:01,484 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:34:01,745 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:34:03,348 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:34:03,579 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:34:03,816 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:34:04,080 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:34:04,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:34:04,624 INFO L93 Difference]: Finished difference Result 951 states and 1203 transitions. [2020-08-18 18:34:04,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 18:34:04,624 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 136 [2020-08-18 18:34:04,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:34:04,629 INFO L225 Difference]: With dead ends: 951 [2020-08-18 18:34:04,629 INFO L226 Difference]: Without dead ends: 507 [2020-08-18 18:34:04,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-18 18:34:04,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-08-18 18:34:04,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 440. [2020-08-18 18:34:04,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-08-18 18:34:04,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 518 transitions. [2020-08-18 18:34:04,724 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 518 transitions. Word has length 136 [2020-08-18 18:34:04,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:34:04,724 INFO L479 AbstractCegarLoop]: Abstraction has 440 states and 518 transitions. [2020-08-18 18:34:04,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 18:34:04,724 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 518 transitions. [2020-08-18 18:34:04,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-18 18:34:04,727 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:34:04,727 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:34:04,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 18:34:04,728 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:34:04,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:34:04,728 INFO L82 PathProgramCache]: Analyzing trace with hash 529869601, now seen corresponding path program 1 times [2020-08-18 18:34:04,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:34:04,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767985800] [2020-08-18 18:34:04,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:34:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:05,003 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:34:05,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:34:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:05,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:34:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:05,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:34:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:05,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:34:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:05,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:34:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:05,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:34:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:05,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:34:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:05,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:34:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:05,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:34:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:05,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:34:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:05,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:34:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:05,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:34:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:05,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:34:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:05,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 18:34:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:05,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 18:34:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:05,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:34:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:05,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:34:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:05,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 18:34:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:05,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 18:34:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:05,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 18:34:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:05,206 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 18:34:05,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767985800] [2020-08-18 18:34:05,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:34:05,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 18:34:05,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108324694] [2020-08-18 18:34:05,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 18:34:05,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:34:05,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 18:34:05,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 18:34:05,209 INFO L87 Difference]: Start difference. First operand 440 states and 518 transitions. Second operand 12 states. [2020-08-18 18:34:05,640 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:34:05,876 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:34:06,103 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:34:06,659 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:34:06,887 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:34:07,102 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:34:07,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:34:07,954 INFO L93 Difference]: Finished difference Result 803 states and 979 transitions. [2020-08-18 18:34:07,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 18:34:07,957 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-18 18:34:07,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:34:07,960 INFO L225 Difference]: With dead ends: 803 [2020-08-18 18:34:07,960 INFO L226 Difference]: Without dead ends: 387 [2020-08-18 18:34:07,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 18:34:07,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-08-18 18:34:08,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 361. [2020-08-18 18:34:08,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-18 18:34:08,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 422 transitions. [2020-08-18 18:34:08,050 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 422 transitions. Word has length 128 [2020-08-18 18:34:08,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:34:08,051 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 422 transitions. [2020-08-18 18:34:08,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 18:34:08,051 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 422 transitions. [2020-08-18 18:34:08,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-18 18:34:08,053 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:34:08,053 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:34:08,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 18:34:08,054 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:34:08,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:34:08,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1312911802, now seen corresponding path program 1 times [2020-08-18 18:34:08,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:34:08,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93272565] [2020-08-18 18:34:08,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:34:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:08,346 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:34:08,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:34:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:08,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:34:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:08,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:34:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:08,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:34:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:08,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:34:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:08,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 18:34:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:08,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:34:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:08,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:34:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:08,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:34:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:08,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:34:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:08,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:34:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:08,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:34:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:08,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:34:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:08,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:34:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:08,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 18:34:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:08,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 18:34:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:08,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:34:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:08,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:34:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:08,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 18:34:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:08,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 18:34:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:08,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 18:34:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:08,640 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-18 18:34:08,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93272565] [2020-08-18 18:34:08,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:34:08,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 18:34:08,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056849096] [2020-08-18 18:34:08,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 18:34:08,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:34:08,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 18:34:08,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 18:34:08,642 INFO L87 Difference]: Start difference. First operand 361 states and 422 transitions. Second operand 13 states. [2020-08-18 18:34:09,781 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:34:10,440 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:34:12,191 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:34:12,450 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:34:12,704 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:34:12,948 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:34:13,247 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:34:13,505 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:34:13,758 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:34:14,014 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:34:14,291 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:34:14,537 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:34:15,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:34:15,178 INFO L93 Difference]: Finished difference Result 1017 states and 1234 transitions. [2020-08-18 18:34:15,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 18:34:15,178 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 132 [2020-08-18 18:34:15,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:34:15,187 INFO L225 Difference]: With dead ends: 1017 [2020-08-18 18:34:15,187 INFO L226 Difference]: Without dead ends: 680 [2020-08-18 18:34:15,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=207, Invalid=785, Unknown=0, NotChecked=0, Total=992 [2020-08-18 18:34:15,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2020-08-18 18:34:15,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 638. [2020-08-18 18:34:15,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2020-08-18 18:34:15,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 736 transitions. [2020-08-18 18:34:15,418 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 736 transitions. Word has length 132 [2020-08-18 18:34:15,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:34:15,419 INFO L479 AbstractCegarLoop]: Abstraction has 638 states and 736 transitions. [2020-08-18 18:34:15,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 18:34:15,419 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 736 transitions. [2020-08-18 18:34:15,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-18 18:34:15,423 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:34:15,423 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:34:15,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 18:34:15,424 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:34:15,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:34:15,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1866114282, now seen corresponding path program 1 times [2020-08-18 18:34:15,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:34:15,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573129478] [2020-08-18 18:34:15,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:34:15,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:15,718 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:34:15,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:34:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:15,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:34:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:15,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:34:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:15,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:34:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:15,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:34:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:15,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 18:34:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:15,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 18:34:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:15,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 18:34:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:15,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:34:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:15,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:34:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:15,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:34:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:15,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:34:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:15,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:34:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:15,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:34:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:15,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:34:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:15,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 18:34:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:15,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 18:34:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:15,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:34:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:15,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:34:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:15,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 18:34:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:15,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 18:34:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:15,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-18 18:34:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-18 18:34:15,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573129478] [2020-08-18 18:34:15,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:34:15,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 18:34:15,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631845992] [2020-08-18 18:34:15,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 18:34:15,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:34:15,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 18:34:15,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-18 18:34:15,878 INFO L87 Difference]: Start difference. First operand 638 states and 736 transitions. Second operand 11 states. [2020-08-18 18:34:16,420 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:34:18,412 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:34:18,657 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:34:18,937 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:34:19,208 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:34:19,447 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:34:20,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:34:20,005 INFO L93 Difference]: Finished difference Result 764 states and 950 transitions. [2020-08-18 18:34:20,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 18:34:20,006 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2020-08-18 18:34:20,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:34:20,011 INFO L225 Difference]: With dead ends: 764 [2020-08-18 18:34:20,011 INFO L226 Difference]: Without dead ends: 761 [2020-08-18 18:34:20,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-08-18 18:34:20,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2020-08-18 18:34:20,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 638. [2020-08-18 18:34:20,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2020-08-18 18:34:20,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 734 transitions. [2020-08-18 18:34:20,169 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 734 transitions. Word has length 136 [2020-08-18 18:34:20,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:34:20,171 INFO L479 AbstractCegarLoop]: Abstraction has 638 states and 734 transitions. [2020-08-18 18:34:20,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 18:34:20,172 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 734 transitions. [2020-08-18 18:34:20,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-18 18:34:20,174 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:34:20,174 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:34:20,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 18:34:20,175 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:34:20,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:34:20,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1647665506, now seen corresponding path program 1 times [2020-08-18 18:34:20,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:34:20,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067157809] [2020-08-18 18:34:20,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:34:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:20,485 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:34:20,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:34:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:20,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:34:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:20,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:34:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:20,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:34:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:20,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:34:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:20,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 18:34:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:20,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:34:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:20,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:34:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:20,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:34:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:20,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:34:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:20,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:34:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:20,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:34:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:20,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:34:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:20,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:34:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:20,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 18:34:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:20,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 18:34:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:20,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:34:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:20,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:34:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:20,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 18:34:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:20,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:34:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:20,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 18:34:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:20,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-18 18:34:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:20,666 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 18:34:20,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067157809] [2020-08-18 18:34:20,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:34:20,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 18:34:20,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447898584] [2020-08-18 18:34:20,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 18:34:20,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:34:20,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 18:34:20,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 18:34:20,668 INFO L87 Difference]: Start difference. First operand 638 states and 734 transitions. Second operand 12 states. [2020-08-18 18:34:21,319 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:34:22,174 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:34:22,739 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:34:23,021 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:34:23,254 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:34:23,486 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:34:23,736 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:34:23,984 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:34:25,631 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:34:25,876 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:34:26,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:34:26,426 INFO L93 Difference]: Finished difference Result 1512 states and 1864 transitions. [2020-08-18 18:34:26,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 18:34:26,427 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 136 [2020-08-18 18:34:26,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:34:26,433 INFO L225 Difference]: With dead ends: 1512 [2020-08-18 18:34:26,433 INFO L226 Difference]: Without dead ends: 1024 [2020-08-18 18:34:26,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-18 18:34:26,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-08-18 18:34:26,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 867. [2020-08-18 18:34:26,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-08-18 18:34:26,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1012 transitions. [2020-08-18 18:34:26,611 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1012 transitions. Word has length 136 [2020-08-18 18:34:26,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:34:26,612 INFO L479 AbstractCegarLoop]: Abstraction has 867 states and 1012 transitions. [2020-08-18 18:34:26,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 18:34:26,612 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1012 transitions. [2020-08-18 18:34:26,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-18 18:34:26,616 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:34:26,617 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:34:26,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 18:34:26,617 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:34:26,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:34:26,618 INFO L82 PathProgramCache]: Analyzing trace with hash -960638147, now seen corresponding path program 2 times [2020-08-18 18:34:26,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:34:26,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977560820] [2020-08-18 18:34:26,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:34:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:26,951 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:34:26,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:34:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:26,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:34:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:26,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:34:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:26,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:34:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:26,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:34:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:26,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 18:34:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:34:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:34:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:34:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:34:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:34:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:34:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:34:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:34:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 18:34:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:34:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:34:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:34:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:34:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 18:34:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:34:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:34:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:34:27,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 18:34:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-18 18:34:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-08-18 18:34:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:34:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:34:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 18:34:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:34:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-18 18:34:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 18:34:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:27,260 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 39 proven. 22 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-08-18 18:34:27,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977560820] [2020-08-18 18:34:27,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:34:27,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 18:34:27,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357795671] [2020-08-18 18:34:27,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 18:34:27,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:34:27,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 18:34:27,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-18 18:34:27,263 INFO L87 Difference]: Start difference. First operand 867 states and 1012 transitions. Second operand 14 states. [2020-08-18 18:34:27,744 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:34:28,481 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:34:29,342 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:34:29,625 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:34:29,858 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:34:30,085 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:34:30,354 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:34:30,616 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:34:31,763 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:34:32,009 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:34:32,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:34:32,910 INFO L93 Difference]: Finished difference Result 2101 states and 2694 transitions. [2020-08-18 18:34:32,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 18:34:32,911 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 192 [2020-08-18 18:34:32,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:34:32,921 INFO L225 Difference]: With dead ends: 2101 [2020-08-18 18:34:32,921 INFO L226 Difference]: Without dead ends: 1384 [2020-08-18 18:34:32,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2020-08-18 18:34:32,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2020-08-18 18:34:33,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 865. [2020-08-18 18:34:33,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 865 states. [2020-08-18 18:34:33,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1010 transitions. [2020-08-18 18:34:33,144 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1010 transitions. Word has length 192 [2020-08-18 18:34:33,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:34:33,146 INFO L479 AbstractCegarLoop]: Abstraction has 865 states and 1010 transitions. [2020-08-18 18:34:33,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 18:34:33,146 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1010 transitions. [2020-08-18 18:34:33,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-08-18 18:34:33,152 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:34:33,152 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:34:33,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 18:34:33,152 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:34:33,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:34:33,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1788025149, now seen corresponding path program 3 times [2020-08-18 18:34:33,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:34:33,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156595392] [2020-08-18 18:34:33,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:34:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 18:34:33,256 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 18:34:33,256 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 18:34:33,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 18:34:33,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:34:33 BoogieIcfgContainer [2020-08-18 18:34:33,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:34:33,324 INFO L168 Benchmark]: Toolchain (without parser) took 53514.68 ms. Allocated memory was 141.6 MB in the beginning and 749.2 MB in the end (delta: 607.6 MB). Free memory was 101.8 MB in the beginning and 547.9 MB in the end (delta: -446.2 MB). Peak memory consumption was 161.5 MB. Max. memory is 7.1 GB. [2020-08-18 18:34:33,327 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 18:34:33,329 INFO L168 Benchmark]: CACSL2BoogieTranslator took 593.78 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 101.5 MB in the beginning and 170.5 MB in the end (delta: -69.0 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-08-18 18:34:33,332 INFO L168 Benchmark]: Boogie Preprocessor took 103.69 ms. Allocated memory is still 203.9 MB. Free memory was 170.5 MB in the beginning and 166.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-18 18:34:33,333 INFO L168 Benchmark]: RCFGBuilder took 1272.26 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 166.1 MB in the beginning and 190.0 MB in the end (delta: -23.9 MB). Peak memory consumption was 78.0 MB. Max. memory is 7.1 GB. [2020-08-18 18:34:33,334 INFO L168 Benchmark]: TraceAbstraction took 51536.67 ms. Allocated memory was 233.8 MB in the beginning and 749.2 MB in the end (delta: 515.4 MB). Free memory was 190.0 MB in the beginning and 547.9 MB in the end (delta: -358.0 MB). Peak memory consumption was 157.4 MB. Max. memory is 7.1 GB. [2020-08-18 18:34:33,340 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 593.78 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 101.5 MB in the beginning and 170.5 MB in the end (delta: -69.0 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.69 ms. Allocated memory is still 203.9 MB. Free memory was 170.5 MB in the beginning and 166.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1272.26 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 166.1 MB in the beginning and 190.0 MB in the end (delta: -23.9 MB). Peak memory consumption was 78.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 51536.67 ms. Allocated memory was 233.8 MB in the beginning and 749.2 MB in the end (delta: 515.4 MB). Free memory was 190.0 MB in the beginning and 547.9 MB in the end (delta: -358.0 MB). Peak memory consumption was 157.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 247]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L149] int waterLevel = 1; [L150] int methaneLevelCritical = 0; [L349] int pumpRunning = 0; [L350] int systemActive = 1; [L704] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L927] int retValue_acc ; [L930] retValue_acc = 1 [L931] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L281] int splverifierCounter ; [L282] int tmp ; [L283] int tmp___0 ; [L284] int tmp___1 ; [L285] int tmp___2 ; [L288] splverifierCounter = 0 [L290] COND TRUE 1 [L292] COND TRUE splverifierCounter < 4 [L298] tmp = __VERIFIER_nondet_int() [L300] COND TRUE \read(tmp) [L302] CALL waterRise() [L167] COND TRUE waterLevel < 2 [L168] waterLevel = waterLevel + 1 [L302] RET waterRise() [L308] tmp___0 = __VERIFIER_nondet_int() [L310] COND FALSE !(\read(tmp___0)) [L318] tmp___2 = __VERIFIER_nondet_int() [L320] COND FALSE !(\read(tmp___2)) [L326] tmp___1 = __VERIFIER_nondet_int() [L328] COND TRUE \read(tmp___1) [L335] CALL timeShift() [L356] COND FALSE !(\read(pumpRunning)) [L363] COND TRUE \read(systemActive) [L365] CALL processEnvironment() [L411] int tmp ; [L414] COND FALSE !(\read(pumpRunning)) [L429] CALL processEnvironment__wrappee__highWaterSensor() [L385] int tmp ; [L388] COND TRUE ! pumpRunning [L390] CALL, EXPR isHighWaterLevel() [L508] int retValue_acc ; [L509] int tmp ; [L510] int tmp___0 ; [L514] CALL, EXPR isHighWaterSensorDry() [L229] int retValue_acc ; [L232] COND FALSE !(waterLevel < 2) [L236] retValue_acc = 0 [L237] return (retValue_acc); [L514] RET, EXPR isHighWaterSensorDry() [L514] tmp = isHighWaterSensorDry() [L516] COND FALSE !(\read(tmp)) [L519] tmp___0 = 1 [L521] retValue_acc = tmp___0 [L522] return (retValue_acc); [L390] RET, EXPR isHighWaterLevel() [L390] tmp = isHighWaterLevel() [L392] COND TRUE \read(tmp) [L394] CALL activatePump() [L439] pumpRunning = 1 [L394] RET activatePump() [L429] RET processEnvironment__wrappee__highWaterSensor() [L365] RET processEnvironment() [L371] CALL __utac_acc__Specification4_spec__1() [L254] int tmp ; [L255] int tmp___0 ; [L259] CALL, EXPR getWaterLevel() [L220] int retValue_acc ; [L223] retValue_acc = waterLevel [L224] return (retValue_acc); [L259] RET, EXPR getWaterLevel() [L259] tmp = getWaterLevel() [L261] COND FALSE !(tmp == 0) [L371] RET __utac_acc__Specification4_spec__1() [L335] RET timeShift() [L290] COND TRUE 1 [L292] COND TRUE splverifierCounter < 4 [L298] tmp = __VERIFIER_nondet_int() [L300] COND FALSE !(\read(tmp)) [L308] tmp___0 = __VERIFIER_nondet_int() [L310] COND FALSE !(\read(tmp___0)) [L318] tmp___2 = __VERIFIER_nondet_int() [L320] COND FALSE !(\read(tmp___2)) [L326] tmp___1 = __VERIFIER_nondet_int() [L328] COND TRUE \read(tmp___1) [L335] CALL timeShift() [L356] COND TRUE \read(pumpRunning) [L358] CALL lowerWaterLevel() [L155] COND TRUE waterLevel > 0 [L156] waterLevel = waterLevel - 1 [L358] RET lowerWaterLevel() [L363] COND TRUE \read(systemActive) [L365] CALL processEnvironment() [L411] int tmp ; [L414] COND TRUE \read(pumpRunning) [L416] CALL, EXPR isMethaneAlarm() [L452] int retValue_acc ; [L456] CALL, EXPR isMethaneLevelCritical() [L188] int retValue_acc ; [L191] retValue_acc = methaneLevelCritical [L192] return (retValue_acc); [L456] RET, EXPR isMethaneLevelCritical() [L456] retValue_acc = isMethaneLevelCritical() [L458] return (retValue_acc); [L416] RET, EXPR isMethaneAlarm() [L416] tmp = isMethaneAlarm() [L418] COND FALSE !(\read(tmp)) [L424] CALL processEnvironment__wrappee__highWaterSensor() [L385] int tmp ; [L388] COND FALSE !(! pumpRunning) [L403] FCALL processEnvironment__wrappee__base() [L424] RET processEnvironment__wrappee__highWaterSensor() [L365] RET processEnvironment() [L371] CALL __utac_acc__Specification4_spec__1() [L254] int tmp ; [L255] int tmp___0 ; [L259] CALL, EXPR getWaterLevel() [L220] int retValue_acc ; [L223] retValue_acc = waterLevel [L224] return (retValue_acc); [L259] RET, EXPR getWaterLevel() [L259] tmp = getWaterLevel() [L261] COND FALSE !(tmp == 0) [L371] RET __utac_acc__Specification4_spec__1() [L335] RET timeShift() [L290] COND TRUE 1 [L292] COND TRUE splverifierCounter < 4 [L298] tmp = __VERIFIER_nondet_int() [L300] COND FALSE !(\read(tmp)) [L308] tmp___0 = __VERIFIER_nondet_int() [L310] COND FALSE !(\read(tmp___0)) [L318] tmp___2 = __VERIFIER_nondet_int() [L320] COND FALSE !(\read(tmp___2)) [L326] tmp___1 = __VERIFIER_nondet_int() [L328] COND TRUE \read(tmp___1) [L335] CALL timeShift() [L356] COND TRUE \read(pumpRunning) [L358] CALL lowerWaterLevel() [L155] COND TRUE waterLevel > 0 [L156] waterLevel = waterLevel - 1 [L358] RET lowerWaterLevel() [L363] COND TRUE \read(systemActive) [L365] CALL processEnvironment() [L411] int tmp ; [L414] COND TRUE \read(pumpRunning) [L416] CALL, EXPR isMethaneAlarm() [L452] int retValue_acc ; [L456] CALL, EXPR isMethaneLevelCritical() [L188] int retValue_acc ; [L191] retValue_acc = methaneLevelCritical [L192] return (retValue_acc); [L456] RET, EXPR isMethaneLevelCritical() [L456] retValue_acc = isMethaneLevelCritical() [L458] return (retValue_acc); [L416] RET, EXPR isMethaneAlarm() [L416] tmp = isMethaneAlarm() [L418] COND FALSE !(\read(tmp)) [L424] CALL processEnvironment__wrappee__highWaterSensor() [L385] int tmp ; [L388] COND FALSE !(! pumpRunning) [L403] FCALL processEnvironment__wrappee__base() [L424] RET processEnvironment__wrappee__highWaterSensor() [L365] RET processEnvironment() [L371] CALL __utac_acc__Specification4_spec__1() [L254] int tmp ; [L255] int tmp___0 ; [L259] CALL, EXPR getWaterLevel() [L220] int retValue_acc ; [L223] retValue_acc = waterLevel [L224] return (retValue_acc); [L259] RET, EXPR getWaterLevel() [L259] tmp = getWaterLevel() [L261] COND TRUE tmp == 0 [L263] CALL, EXPR isPumpRunning() [L463] int retValue_acc ; [L466] retValue_acc = pumpRunning [L467] return (retValue_acc); [L263] RET, EXPR isPumpRunning() [L263] tmp___0 = isPumpRunning() [L265] COND TRUE \read(tmp___0) [L267] CALL __automaton_fail() [L247] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 229 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 51.4s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 44.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1439 SDtfs, 3500 SDslu, 1987 SDs, 0 SdLazy, 10940 SolverSat, 2500 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 637 GetRequests, 413 SyntacticMatches, 12 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 21.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=867occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 1124 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 1337 NumberOfCodeBlocks, 1337 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1138 ConstructedInterpolants, 0 QuantifiedInterpolants, 455757 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 211/247 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...