/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:56:24,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:56:24,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:56:24,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:56:24,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:56:24,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:56:24,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:56:24,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:56:24,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:56:24,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:56:24,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:56:24,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:56:24,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:56:24,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:56:24,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:56:24,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:56:24,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:56:24,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:56:24,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:56:24,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:56:24,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:56:24,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:56:24,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:56:24,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:56:24,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:56:24,539 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:56:24,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:56:24,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:56:24,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:56:24,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:56:24,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:56:24,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:56:24,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:56:24,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:56:24,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:56:24,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:56:24,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:56:24,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:56:24,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:56:24,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:56:24,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:56:24,549 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 21:56:24,588 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:56:24,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:56:24,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:56:24,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:56:24,589 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:56:24,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:56:24,595 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:56:24,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:56:24,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:56:24,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:56:24,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:56:24,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:56:24,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:56:24,597 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:56:24,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:56:24,597 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:56:24,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:56:24,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:56:24,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:56:24,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:56:24,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:56:24,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:56:24,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:56:24,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:56:24,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:56:24,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:56:24,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:56:24,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:56:24,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:56:24,600 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 21:56:24,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:56:24,939 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:56:24,942 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:56:24,944 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:56:24,944 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:56:24,945 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c [2020-08-21 21:56:25,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7939be7b7/f9b6ff8bc09d4acfb97d47fa96d0e8ad/FLAGc07eb3f42 [2020-08-21 21:56:25,531 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:56:25,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c [2020-08-21 21:56:25,545 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7939be7b7/f9b6ff8bc09d4acfb97d47fa96d0e8ad/FLAGc07eb3f42 [2020-08-21 21:56:25,986 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7939be7b7/f9b6ff8bc09d4acfb97d47fa96d0e8ad [2020-08-21 21:56:25,996 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:56:25,999 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:56:26,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:56:26,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:56:26,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:56:26,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:56:25" (1/1) ... [2020-08-21 21:56:26,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27423965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:56:26, skipping insertion in model container [2020-08-21 21:56:26,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:56:25" (1/1) ... [2020-08-21 21:56:26,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:56:26,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:56:26,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:56:26,450 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:56:26,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:56:26,589 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:56:26,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:56:26 WrapperNode [2020-08-21 21:56:26,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:56:26,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:56:26,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:56:26,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:56:26,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:56:26" (1/1) ... [2020-08-21 21:56:26,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:56:26" (1/1) ... [2020-08-21 21:56:26,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:56:26" (1/1) ... [2020-08-21 21:56:26,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:56:26" (1/1) ... [2020-08-21 21:56:26,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:56:26" (1/1) ... [2020-08-21 21:56:26,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:56:26" (1/1) ... [2020-08-21 21:56:26,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:56:26" (1/1) ... [2020-08-21 21:56:26,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:56:26,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:56:26,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:56:26,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:56:26,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:56:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:56:26,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:56:26,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:56:26,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 21:56:26,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 21:56:26,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 21:56:26,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 21:56:26,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 21:56:26,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 21:56:26,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 21:56:26,813 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 21:56:26,813 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 21:56:26,813 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 21:56:26,813 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 21:56:26,813 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:56:26,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 21:56:26,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 21:56:26,815 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 21:56:26,815 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 21:56:26,815 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 21:56:26,815 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 21:56:26,815 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 21:56:26,815 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 21:56:26,816 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 21:56:26,816 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 21:56:26,816 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 21:56:26,817 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 21:56:26,817 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 21:56:26,817 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 21:56:26,818 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 21:56:26,818 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 21:56:26,818 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 21:56:26,818 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 21:56:26,818 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 21:56:26,818 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 21:56:26,818 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 21:56:26,819 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 21:56:26,819 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 21:56:26,819 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 21:56:26,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:56:26,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:56:26,820 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 21:56:26,820 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 21:56:26,820 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 21:56:26,820 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 21:56:26,820 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 21:56:26,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 21:56:26,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 21:56:26,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:56:26,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 21:56:26,821 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 21:56:26,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:56:26,821 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 21:56:26,821 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 21:56:26,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:56:26,822 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 21:56:26,822 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 21:56:26,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:56:26,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 21:56:26,823 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 21:56:26,823 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 21:56:26,823 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 21:56:26,823 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 21:56:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 21:56:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 21:56:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 21:56:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 21:56:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 21:56:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 21:56:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 21:56:26,825 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 21:56:26,825 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:56:26,826 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 21:56:26,826 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 21:56:26,827 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 21:56:26,827 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 21:56:26,828 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 21:56:26,828 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 21:56:26,828 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 21:56:26,828 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 21:56:26,828 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 21:56:26,828 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 21:56:26,829 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 21:56:26,829 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 21:56:26,830 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 21:56:26,830 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 21:56:26,830 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 21:56:26,830 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 21:56:26,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:56:26,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 21:56:26,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:56:27,930 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:56:27,931 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 21:56:27,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:56:27 BoogieIcfgContainer [2020-08-21 21:56:27,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:56:27,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:56:27,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:56:27,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:56:27,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:56:25" (1/3) ... [2020-08-21 21:56:27,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a48c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:56:27, skipping insertion in model container [2020-08-21 21:56:27,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:56:26" (2/3) ... [2020-08-21 21:56:27,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a48c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:56:27, skipping insertion in model container [2020-08-21 21:56:27,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:56:27" (3/3) ... [2020-08-21 21:56:27,945 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product37.cil.c [2020-08-21 21:56:27,955 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:56:27,963 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:56:27,978 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:56:28,004 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:56:28,004 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:56:28,004 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:56:28,004 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:56:28,005 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:56:28,005 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:56:28,005 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:56:28,005 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:56:28,026 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-08-21 21:56:28,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 21:56:28,037 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:56:28,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:56:28,038 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:56:28,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:56:28,045 INFO L82 PathProgramCache]: Analyzing trace with hash -749162492, now seen corresponding path program 1 times [2020-08-21 21:56:28,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:56:28,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775451676] [2020-08-21 21:56:28,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:56:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:28,766 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:56:28,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:56:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:28,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:56:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:28,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:56:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:28,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:56:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:28,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:56:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:28,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:56:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:28,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:56:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:28,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:56:28,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775451676] [2020-08-21 21:56:28,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:56:28,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 21:56:28,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446427409] [2020-08-21 21:56:28,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 21:56:28,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:56:28,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 21:56:28,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 21:56:28,938 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-08-21 21:56:30,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:56:30,139 INFO L93 Difference]: Finished difference Result 287 states and 378 transitions. [2020-08-21 21:56:30,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 21:56:30,141 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 21:56:30,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:56:30,156 INFO L225 Difference]: With dead ends: 287 [2020-08-21 21:56:30,156 INFO L226 Difference]: Without dead ends: 155 [2020-08-21 21:56:30,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 21:56:30,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-21 21:56:30,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-21 21:56:30,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-21 21:56:30,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 145 transitions. [2020-08-21 21:56:30,260 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 145 transitions. Word has length 46 [2020-08-21 21:56:30,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:56:30,261 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 145 transitions. [2020-08-21 21:56:30,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 21:56:30,262 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 145 transitions. [2020-08-21 21:56:30,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 21:56:30,270 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:56:30,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:56:30,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:56:30,271 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:56:30,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:56:30,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1435333190, now seen corresponding path program 1 times [2020-08-21 21:56:30,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:56:30,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752711088] [2020-08-21 21:56:30,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:56:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:30,741 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:56:30,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:56:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:30,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:56:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:30,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:56:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:30,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:56:30,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:30,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:56:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:30,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 21:56:30,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:30,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 21:56:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:30,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:56:30,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752711088] [2020-08-21 21:56:30,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:56:30,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:56:30,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802564427] [2020-08-21 21:56:30,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:56:30,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:56:30,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:56:30,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:56:30,795 INFO L87 Difference]: Start difference. First operand 123 states and 145 transitions. Second operand 4 states. [2020-08-21 21:56:31,205 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:56:31,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:56:31,960 INFO L93 Difference]: Finished difference Result 220 states and 269 transitions. [2020-08-21 21:56:31,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 21:56:31,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 21:56:31,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:56:31,965 INFO L225 Difference]: With dead ends: 220 [2020-08-21 21:56:31,965 INFO L226 Difference]: Without dead ends: 139 [2020-08-21 21:56:31,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:56:31,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-21 21:56:32,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-21 21:56:32,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-21 21:56:32,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-08-21 21:56:32,019 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 47 [2020-08-21 21:56:32,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:56:32,020 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-08-21 21:56:32,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:56:32,020 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-08-21 21:56:32,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 21:56:32,030 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:56:32,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:56:32,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:56:32,031 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:56:32,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:56:32,032 INFO L82 PathProgramCache]: Analyzing trace with hash 325618258, now seen corresponding path program 1 times [2020-08-21 21:56:32,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:56:32,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047595476] [2020-08-21 21:56:32,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:56:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:32,406 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:56:32,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:56:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:32,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:56:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:32,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:56:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:32,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:56:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:32,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:56:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:32,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:56:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:32,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 21:56:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:32,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:56:32,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047595476] [2020-08-21 21:56:32,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:56:32,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:56:32,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596989771] [2020-08-21 21:56:32,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:56:32,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:56:32,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:56:32,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:56:32,542 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 8 states. [2020-08-21 21:56:32,936 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:56:33,255 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:56:33,514 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:56:33,795 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:56:34,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:56:34,954 INFO L93 Difference]: Finished difference Result 229 states and 283 transitions. [2020-08-21 21:56:34,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 21:56:34,955 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 21:56:34,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:56:34,957 INFO L225 Difference]: With dead ends: 229 [2020-08-21 21:56:34,957 INFO L226 Difference]: Without dead ends: 139 [2020-08-21 21:56:34,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 21:56:34,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-21 21:56:34,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-21 21:56:34,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-21 21:56:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2020-08-21 21:56:34,988 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 51 [2020-08-21 21:56:34,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:56:34,989 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2020-08-21 21:56:34,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:56:34,989 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2020-08-21 21:56:34,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 21:56:34,990 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:56:34,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:56:34,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:56:34,991 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:56:34,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:56:34,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1759847866, now seen corresponding path program 1 times [2020-08-21 21:56:34,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:56:34,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485074599] [2020-08-21 21:56:34,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:56:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:35,275 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:56:35,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:56:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:35,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:56:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:35,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:56:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:35,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:56:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:35,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:56:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:35,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 21:56:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:35,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:56:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:35,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:56:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:35,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 21:56:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:35,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 21:56:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:35,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:56:35,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485074599] [2020-08-21 21:56:35,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:56:35,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 21:56:35,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829868173] [2020-08-21 21:56:35,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 21:56:35,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:56:35,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 21:56:35,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 21:56:35,386 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand 6 states. [2020-08-21 21:56:35,704 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:56:36,832 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:56:37,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:56:37,458 INFO L93 Difference]: Finished difference Result 321 states and 399 transitions. [2020-08-21 21:56:37,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 21:56:37,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-21 21:56:37,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:56:37,462 INFO L225 Difference]: With dead ends: 321 [2020-08-21 21:56:37,463 INFO L226 Difference]: Without dead ends: 231 [2020-08-21 21:56:37,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:56:37,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-08-21 21:56:37,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 190. [2020-08-21 21:56:37,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-21 21:56:37,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 217 transitions. [2020-08-21 21:56:37,538 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 217 transitions. Word has length 64 [2020-08-21 21:56:37,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:56:37,538 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 217 transitions. [2020-08-21 21:56:37,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 21:56:37,538 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 217 transitions. [2020-08-21 21:56:37,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 21:56:37,542 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:56:37,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:56:37,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:56:37,543 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:56:37,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:56:37,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1017680522, now seen corresponding path program 1 times [2020-08-21 21:56:37,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:56:37,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95425997] [2020-08-21 21:56:37,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:56:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:37,851 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:56:37,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:56:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:37,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:56:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:37,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:56:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:37,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:56:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:37,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:56:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:37,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 21:56:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:37,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:56:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:37,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:56:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:37,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:56:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:37,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:56:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:37,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 21:56:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:37,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 21:56:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:37,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:56:37,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95425997] [2020-08-21 21:56:37,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:56:37,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:56:37,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273057515] [2020-08-21 21:56:37,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:56:37,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:56:37,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:56:37,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:56:37,959 INFO L87 Difference]: Start difference. First operand 190 states and 217 transitions. Second operand 8 states. [2020-08-21 21:56:38,304 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:56:39,361 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:56:39,631 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:56:39,861 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:56:40,079 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:56:40,361 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:56:41,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:56:41,371 INFO L93 Difference]: Finished difference Result 565 states and 701 transitions. [2020-08-21 21:56:41,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 21:56:41,371 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-08-21 21:56:41,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:56:41,375 INFO L225 Difference]: With dead ends: 565 [2020-08-21 21:56:41,376 INFO L226 Difference]: Without dead ends: 399 [2020-08-21 21:56:41,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 21:56:41,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-08-21 21:56:41,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 335. [2020-08-21 21:56:41,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-21 21:56:41,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 384 transitions. [2020-08-21 21:56:41,468 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 384 transitions. Word has length 78 [2020-08-21 21:56:41,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:56:41,469 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 384 transitions. [2020-08-21 21:56:41,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:56:41,469 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 384 transitions. [2020-08-21 21:56:41,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-21 21:56:41,471 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:56:41,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:56:41,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:56:41,472 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:56:41,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:56:41,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1476513266, now seen corresponding path program 1 times [2020-08-21 21:56:41,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:56:41,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380490901] [2020-08-21 21:56:41,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:56:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:41,793 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:56:41,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:56:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:41,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:56:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:41,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:56:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:41,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:56:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:41,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:56:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:41,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:56:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:41,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 21:56:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:41,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:56:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:41,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:56:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:41,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:56:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:41,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:56:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:41,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 21:56:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:41,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 21:56:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:41,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:56:41,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380490901] [2020-08-21 21:56:41,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:56:41,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:56:41,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703993010] [2020-08-21 21:56:41,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:56:41,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:56:41,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:56:41,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:56:41,902 INFO L87 Difference]: Start difference. First operand 335 states and 384 transitions. Second operand 9 states. [2020-08-21 21:56:42,346 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:56:43,336 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:56:43,550 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:56:43,817 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:56:44,090 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:56:44,347 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:56:45,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:56:45,332 INFO L93 Difference]: Finished difference Result 438 states and 552 transitions. [2020-08-21 21:56:45,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 21:56:45,333 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-08-21 21:56:45,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:56:45,337 INFO L225 Difference]: With dead ends: 438 [2020-08-21 21:56:45,337 INFO L226 Difference]: Without dead ends: 435 [2020-08-21 21:56:45,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 21:56:45,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-08-21 21:56:45,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 335. [2020-08-21 21:56:45,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-21 21:56:45,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 383 transitions. [2020-08-21 21:56:45,405 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 383 transitions. Word has length 82 [2020-08-21 21:56:45,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:56:45,405 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 383 transitions. [2020-08-21 21:56:45,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:56:45,406 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 383 transitions. [2020-08-21 21:56:45,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 21:56:45,407 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:56:45,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:56:45,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 21:56:45,408 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:56:45,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:56:45,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1573868364, now seen corresponding path program 1 times [2020-08-21 21:56:45,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:56:45,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877681313] [2020-08-21 21:56:45,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:56:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:45,646 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:56:45,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:56:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:45,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:56:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:45,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:56:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:45,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:56:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:45,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:56:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:45,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:56:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:45,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 21:56:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:45,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:56:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:45,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:56:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:45,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:56:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:45,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:56:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:45,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 21:56:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:45,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 21:56:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:45,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:56:45,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877681313] [2020-08-21 21:56:45,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:56:45,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:56:45,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112881227] [2020-08-21 21:56:45,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:56:45,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:56:45,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:56:45,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:56:45,845 INFO L87 Difference]: Start difference. First operand 335 states and 383 transitions. Second operand 9 states. [2020-08-21 21:56:46,708 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:56:46,959 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:56:47,199 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:56:47,432 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:56:48,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:56:48,378 INFO L93 Difference]: Finished difference Result 750 states and 926 transitions. [2020-08-21 21:56:48,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 21:56:48,378 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-21 21:56:48,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:56:48,384 INFO L225 Difference]: With dead ends: 750 [2020-08-21 21:56:48,384 INFO L226 Difference]: Without dead ends: 439 [2020-08-21 21:56:48,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 21:56:48,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-08-21 21:56:48,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 345. [2020-08-21 21:56:48,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-08-21 21:56:48,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 393 transitions. [2020-08-21 21:56:48,460 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 393 transitions. Word has length 83 [2020-08-21 21:56:48,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:56:48,461 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 393 transitions. [2020-08-21 21:56:48,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:56:48,461 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 393 transitions. [2020-08-21 21:56:48,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 21:56:48,462 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:56:48,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:56:48,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 21:56:48,463 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:56:48,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:56:48,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1596500618, now seen corresponding path program 1 times [2020-08-21 21:56:48,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:56:48,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742254556] [2020-08-21 21:56:48,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:56:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:48,725 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:56:48,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:56:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:48,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:56:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:48,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:56:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:48,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:56:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:48,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:56:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:48,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:56:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:48,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 21:56:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:48,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:56:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:48,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:56:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:48,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:56:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:48,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:56:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:48,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 21:56:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:48,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 21:56:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:48,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:56:48,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742254556] [2020-08-21 21:56:48,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:56:48,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 21:56:48,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444823705] [2020-08-21 21:56:48,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 21:56:48,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:56:48,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 21:56:48,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:56:48,866 INFO L87 Difference]: Start difference. First operand 345 states and 393 transitions. Second operand 11 states. [2020-08-21 21:56:49,579 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:56:49,832 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:56:50,029 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:56:50,615 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:56:50,858 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:56:51,098 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:56:52,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:56:52,149 INFO L93 Difference]: Finished difference Result 774 states and 966 transitions. [2020-08-21 21:56:52,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 21:56:52,150 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-08-21 21:56:52,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:56:52,154 INFO L225 Difference]: With dead ends: 774 [2020-08-21 21:56:52,155 INFO L226 Difference]: Without dead ends: 453 [2020-08-21 21:56:52,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 21:56:52,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-08-21 21:56:52,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 353. [2020-08-21 21:56:52,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-08-21 21:56:52,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 401 transitions. [2020-08-21 21:56:52,256 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 401 transitions. Word has length 83 [2020-08-21 21:56:52,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:56:52,256 INFO L479 AbstractCegarLoop]: Abstraction has 353 states and 401 transitions. [2020-08-21 21:56:52,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 21:56:52,257 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 401 transitions. [2020-08-21 21:56:52,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 21:56:52,258 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:56:52,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:56:52,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 21:56:52,259 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:56:52,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:56:52,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1672974679, now seen corresponding path program 1 times [2020-08-21 21:56:52,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:56:52,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322997365] [2020-08-21 21:56:52,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:56:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:52,517 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:56:52,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:56:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:52,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:56:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:52,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:56:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:52,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:56:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:52,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:56:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:52,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:56:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:52,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 21:56:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:52,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:56:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:52,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:56:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:52,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:56:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:52,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:56:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:52,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 21:56:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:52,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 21:56:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:56:52,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:56:52,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322997365] [2020-08-21 21:56:52,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:56:52,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 21:56:52,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702052860] [2020-08-21 21:56:52,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 21:56:52,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:56:52,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 21:56:52,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:56:52,639 INFO L87 Difference]: Start difference. First operand 353 states and 401 transitions. Second operand 7 states. [2020-08-21 21:56:53,143 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:56:53,842 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:56:55,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:56:55,768 INFO L93 Difference]: Finished difference Result 1077 states and 1388 transitions. [2020-08-21 21:56:55,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 21:56:55,769 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-08-21 21:56:55,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:56:55,775 INFO L225 Difference]: With dead ends: 1077 [2020-08-21 21:56:55,776 INFO L226 Difference]: Without dead ends: 748 [2020-08-21 21:56:55,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 21:56:55,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-08-21 21:56:55,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 649. [2020-08-21 21:56:55,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-21 21:56:55,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 771 transitions. [2020-08-21 21:56:55,913 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 771 transitions. Word has length 83 [2020-08-21 21:56:55,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:56:55,914 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 771 transitions. [2020-08-21 21:56:55,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 21:56:55,915 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 771 transitions. [2020-08-21 21:56:55,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-21 21:56:55,919 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:56:55,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:56:55,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 21:56:55,919 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:56:55,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:56:55,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1457224847, now seen corresponding path program 1 times [2020-08-21 21:56:55,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:56:55,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72469495] [2020-08-21 21:56:55,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:56:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 21:56:55,982 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 21:56:55,982 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 21:56:55,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 21:56:56,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 09:56:56 BoogieIcfgContainer [2020-08-21 21:56:56,028 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 21:56:56,029 INFO L168 Benchmark]: Toolchain (without parser) took 30030.68 ms. Allocated memory was 138.9 MB in the beginning and 664.3 MB in the end (delta: 525.3 MB). Free memory was 100.8 MB in the beginning and 358.3 MB in the end (delta: -257.5 MB). Peak memory consumption was 267.8 MB. Max. memory is 7.1 GB. [2020-08-21 21:56:56,033 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 21:56:56,035 INFO L168 Benchmark]: CACSL2BoogieTranslator took 588.45 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 100.6 MB in the beginning and 167.0 MB in the end (delta: -66.5 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-08-21 21:56:56,038 INFO L168 Benchmark]: Boogie Preprocessor took 123.06 ms. Allocated memory is still 200.3 MB. Free memory was 167.0 MB in the beginning and 163.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-21 21:56:56,039 INFO L168 Benchmark]: RCFGBuilder took 1221.99 ms. Allocated memory was 200.3 MB in the beginning and 232.8 MB in the end (delta: 32.5 MB). Free memory was 163.0 MB in the beginning and 193.5 MB in the end (delta: -30.5 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB. [2020-08-21 21:56:56,039 INFO L168 Benchmark]: TraceAbstraction took 28090.14 ms. Allocated memory was 232.8 MB in the beginning and 664.3 MB in the end (delta: 431.5 MB). Free memory was 192.1 MB in the beginning and 358.3 MB in the end (delta: -166.2 MB). Peak memory consumption was 265.2 MB. Max. memory is 7.1 GB. [2020-08-21 21:56:56,045 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 588.45 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 100.6 MB in the beginning and 167.0 MB in the end (delta: -66.5 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.06 ms. Allocated memory is still 200.3 MB. Free memory was 167.0 MB in the beginning and 163.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1221.99 ms. Allocated memory was 200.3 MB in the beginning and 232.8 MB in the end (delta: 32.5 MB). Free memory was 163.0 MB in the beginning and 193.5 MB in the end (delta: -30.5 MB). Peak memory consumption was 83.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28090.14 ms. Allocated memory was 232.8 MB in the beginning and 664.3 MB in the end (delta: 431.5 MB). Free memory was 192.1 MB in the beginning and 358.3 MB in the end (delta: -166.2 MB). Peak memory consumption was 265.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 543]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L406] int cleanupTimeShifts = 4; [L588] int pumpRunning = 0; [L589] int systemActive = 1; [L832] int waterLevel = 1; [L833] int methaneLevelCritical = 0; [L487] int retValue_acc ; [L488] int tmp ; [L492] FCALL select_helpers() [L493] FCALL select_features() [L494] CALL, EXPR valid_product() [L574] int retValue_acc ; [L577] retValue_acc = 1 [L578] return (retValue_acc); [L494] RET, EXPR valid_product() [L494] tmp = valid_product() [L496] COND TRUE \read(tmp) [L498] FCALL setup() [L499] CALL runTest() [L478] CALL test() [L767] int splverifierCounter ; [L768] int tmp ; [L769] int tmp___0 ; [L770] int tmp___1 ; [L771] int tmp___2 ; [L774] splverifierCounter = 0 [L776] COND TRUE 1 [L778] COND TRUE splverifierCounter < 4 [L784] tmp = __VERIFIER_nondet_int() [L786] COND TRUE \read(tmp) [L788] CALL waterRise() [L850] COND TRUE waterLevel < 2 [L851] waterLevel = waterLevel + 1 [L788] RET waterRise() [L794] tmp___0 = __VERIFIER_nondet_int() [L796] COND TRUE \read(tmp___0) [L798] CALL changeMethaneLevel() [L862] COND FALSE !(\read(methaneLevelCritical)) [L865] methaneLevelCritical = 1 [L798] RET changeMethaneLevel() [L804] tmp___2 = __VERIFIER_nondet_int() [L806] COND TRUE \read(tmp___2) [L819] CALL timeShift() [L595] COND FALSE !(\read(pumpRunning)) [L602] COND TRUE \read(systemActive) [L604] CALL processEnvironment() [L650] int tmp ; [L653] COND FALSE !(\read(pumpRunning)) [L668] CALL processEnvironment__wrappee__highWaterSensor() [L624] int tmp ; [L627] COND TRUE ! pumpRunning [L629] CALL, EXPR isHighWaterLevel() [L747] int retValue_acc ; [L748] int tmp ; [L749] int tmp___0 ; [L753] CALL, EXPR isHighWaterSensorDry() [L912] int retValue_acc ; [L915] COND FALSE !(waterLevel < 2) [L919] retValue_acc = 0 [L920] return (retValue_acc); [L753] RET, EXPR isHighWaterSensorDry() [L753] tmp = isHighWaterSensorDry() [L755] COND FALSE !(\read(tmp)) [L758] tmp___0 = 1 [L760] retValue_acc = tmp___0 [L761] return (retValue_acc); [L629] RET, EXPR isHighWaterLevel() [L629] tmp = isHighWaterLevel() [L631] COND TRUE \read(tmp) [L633] CALL activatePump() [L678] pumpRunning = 1 [L633] RET activatePump() [L668] RET processEnvironment__wrappee__highWaterSensor() [L604] RET processEnvironment() [L610] CALL __utac_acc__Specification1_spec__1() [L514] int tmp ; [L515] int tmp___0 ; [L519] CALL, EXPR isMethaneLevelCritical() [L871] int retValue_acc ; [L874] retValue_acc = methaneLevelCritical [L875] return (retValue_acc); [L519] RET, EXPR isMethaneLevelCritical() [L519] tmp = isMethaneLevelCritical() [L521] COND TRUE \read(tmp) [L523] CALL, EXPR isPumpRunning() [L702] int retValue_acc ; [L705] retValue_acc = pumpRunning [L706] return (retValue_acc); [L523] RET, EXPR isPumpRunning() [L523] tmp___0 = isPumpRunning() [L525] COND TRUE \read(tmp___0) [L527] CALL __automaton_fail() [L543] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.9s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 22.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1007 SDtfs, 1711 SDslu, 941 SDs, 0 SdLazy, 4732 SolverSat, 1066 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 316 GetRequests, 219 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 9.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=649occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 580 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 704 NumberOfCodeBlocks, 704 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 608 ConstructedInterpolants, 0 QuantifiedInterpolants, 186785 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...