/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:47:45,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:47:45,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:47:45,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:47:45,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:47:45,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:47:45,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:47:45,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:47:45,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:47:45,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:47:45,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:47:45,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:47:45,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:47:45,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:47:45,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:47:45,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:47:45,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:47:45,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:47:45,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:47:45,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:47:45,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:47:45,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:47:45,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:47:45,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:47:45,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:47:45,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:47:45,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:47:45,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:47:45,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:47:45,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 14:47:45,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 14:47:45,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 14:47:45,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 14:47:45,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 14:47:45,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 14:47:45,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 14:47:45,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 14:47:45,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 14:47:45,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:47:45,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:47:45,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:47:45,719 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 14:47:45,763 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:47:45,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:47:45,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:47:45,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:47:45,767 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:47:45,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:47:45,767 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:47:45,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:47:45,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:47:45,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:47:45,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:47:45,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:47:45,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:47:45,770 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:47:45,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:47:45,770 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:47:45,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:47:45,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:47:45,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:47:45,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:47:45,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:47:45,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:47:45,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:47:45,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:47:45,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:47:45,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:47:45,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:47:45,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:47:45,773 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:47:45,773 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 -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-21 14:47:46,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:47:46,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:47:46,083 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:47:46,085 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:47:46,085 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:47:46,086 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product41.cil.c [2020-08-21 14:47:46,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f5ef35c0/1e9c8925a9a343b4b01f8ec403672930/FLAG42eb9bb5a [2020-08-21 14:47:46,686 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:47:46,687 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product41.cil.c [2020-08-21 14:47:46,704 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f5ef35c0/1e9c8925a9a343b4b01f8ec403672930/FLAG42eb9bb5a [2020-08-21 14:47:47,018 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f5ef35c0/1e9c8925a9a343b4b01f8ec403672930 [2020-08-21 14:47:47,027 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:47:47,029 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:47:47,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:47:47,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:47:47,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:47:47,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:47:47" (1/1) ... [2020-08-21 14:47:47,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b99cef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:47:47, skipping insertion in model container [2020-08-21 14:47:47,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:47:47" (1/1) ... [2020-08-21 14:47:47,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:47:47,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:47:47,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:47:47,523 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:47:47,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:47:47,686 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:47:47,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:47:47 WrapperNode [2020-08-21 14:47:47,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:47:47,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:47:47,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:47:47,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:47:47,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:47:47" (1/1) ... [2020-08-21 14:47:47,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:47:47" (1/1) ... [2020-08-21 14:47:47,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:47:47" (1/1) ... [2020-08-21 14:47:47,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:47:47" (1/1) ... [2020-08-21 14:47:47,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:47:47" (1/1) ... [2020-08-21 14:47:47,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:47:47" (1/1) ... [2020-08-21 14:47:47,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:47:47" (1/1) ... [2020-08-21 14:47:47,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:47:47,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:47:47,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:47:47,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:47:47,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:47:47" (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 14:47:47,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:47:47,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:47:47,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 14:47:47,849 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 14:47:47,849 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 14:47:47,849 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 14:47:47,849 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 14:47:47,849 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 14:47:47,850 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 14:47:47,850 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 14:47:47,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 14:47:47,851 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 14:47:47,852 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 14:47:47,852 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 14:47:47,852 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 14:47:47,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 14:47:47,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 14:47:47,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 14:47:47,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 14:47:47,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 14:47:47,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 14:47:47,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 14:47:47,855 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 14:47:47,855 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 14:47:47,855 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 14:47:47,857 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 14:47:47,857 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 14:47:47,858 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 14:47:47,858 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 14:47:47,858 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 14:47:47,858 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 14:47:47,858 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 14:47:47,858 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 14:47:47,859 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 14:47:47,859 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 14:47:47,859 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 14:47:47,859 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 14:47:47,859 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:47:47,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:47:47,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 14:47:47,860 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 14:47:47,860 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 14:47:47,860 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 14:47:47,860 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 14:47:47,861 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 14:47:47,862 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 14:47:47,862 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 14:47:47,862 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 14:47:47,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:47:47,862 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 14:47:47,862 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 14:47:47,862 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 14:47:47,863 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 14:47:47,863 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 14:47:47,863 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 14:47:47,863 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 14:47:47,863 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 14:47:47,864 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 14:47:47,864 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 14:47:47,864 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 14:47:47,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 14:47:47,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 14:47:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:47:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 14:47:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 14:47:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:47:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 14:47:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 14:47:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:47:47,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 14:47:47,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 14:47:47,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 14:47:47,867 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 14:47:47,867 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 14:47:47,867 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 14:47:47,868 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 14:47:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 14:47:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 14:47:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 14:47:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 14:47:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 14:47:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 14:47:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 14:47:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 14:47:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 14:47:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 14:47:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:47:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:47:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 14:47:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:47:48,985 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:47:48,985 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 14:47:48,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:47:48 BoogieIcfgContainer [2020-08-21 14:47:48,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:47:48,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:47:48,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:47:48,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:47:48,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:47:47" (1/3) ... [2020-08-21 14:47:48,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a6dec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:47:48, skipping insertion in model container [2020-08-21 14:47:48,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:47:47" (2/3) ... [2020-08-21 14:47:48,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a6dec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:47:48, skipping insertion in model container [2020-08-21 14:47:48,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:47:48" (3/3) ... [2020-08-21 14:47:48,999 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product41.cil.c [2020-08-21 14:47:49,009 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:47:49,017 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:47:49,032 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:47:49,056 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:47:49,056 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:47:49,057 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:47:49,057 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:47:49,057 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:47:49,057 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:47:49,058 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:47:49,058 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:47:49,080 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states. [2020-08-21 14:47:49,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 14:47:49,089 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:47:49,090 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 14:47:49,091 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:47:49,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:47:49,097 INFO L82 PathProgramCache]: Analyzing trace with hash -219528545, now seen corresponding path program 1 times [2020-08-21 14:47:49,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:47:49,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986900093] [2020-08-21 14:47:49,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:47:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:49,752 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:47:49,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:47:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:49,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:47:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:49,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:47:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:49,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:47:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:49,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:47:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:49,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:47:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:49,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:47:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:49,838 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 14:47:49,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986900093] [2020-08-21 14:47:49,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:47:49,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 14:47:49,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787116539] [2020-08-21 14:47:49,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 14:47:49,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:47:49,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 14:47:49,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 14:47:49,867 INFO L87 Difference]: Start difference. First operand 163 states. Second operand 3 states. [2020-08-21 14:47:50,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:47:50,906 INFO L93 Difference]: Finished difference Result 281 states and 365 transitions. [2020-08-21 14:47:50,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 14:47:50,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 14:47:50,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:47:50,925 INFO L225 Difference]: With dead ends: 281 [2020-08-21 14:47:50,925 INFO L226 Difference]: Without dead ends: 152 [2020-08-21 14:47:50,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 14:47:50,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-21 14:47:51,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 120. [2020-08-21 14:47:51,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-21 14:47:51,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2020-08-21 14:47:51,051 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 46 [2020-08-21 14:47:51,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:47:51,052 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2020-08-21 14:47:51,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 14:47:51,053 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2020-08-21 14:47:51,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 14:47:51,062 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:47:51,063 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 14:47:51,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:47:51,063 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:47:51,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:47:51,064 INFO L82 PathProgramCache]: Analyzing trace with hash 207659306, now seen corresponding path program 1 times [2020-08-21 14:47:51,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:47:51,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020421245] [2020-08-21 14:47:51,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:47:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:51,457 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:47:51,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:47:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:51,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:47:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:51,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:47:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:51,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:47:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:51,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:47:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:51,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:47:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:51,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 14:47:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:51,495 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 14:47:51,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020421245] [2020-08-21 14:47:51,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:47:51,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 14:47:51,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840027122] [2020-08-21 14:47:51,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 14:47:51,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:47:51,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 14:47:51,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 14:47:51,499 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand 4 states. [2020-08-21 14:47:51,885 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:47:52,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:47:52,579 INFO L93 Difference]: Finished difference Result 214 states and 256 transitions. [2020-08-21 14:47:52,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 14:47:52,580 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 14:47:52,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:47:52,583 INFO L225 Difference]: With dead ends: 214 [2020-08-21 14:47:52,583 INFO L226 Difference]: Without dead ends: 136 [2020-08-21 14:47:52,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 14:47:52,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-08-21 14:47:52,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 111. [2020-08-21 14:47:52,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-21 14:47:52,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2020-08-21 14:47:52,618 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 47 [2020-08-21 14:47:52,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:47:52,618 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2020-08-21 14:47:52,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 14:47:52,619 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2020-08-21 14:47:52,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 14:47:52,620 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:47:52,621 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 14:47:52,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:47:52,621 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:47:52,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:47:52,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1269439858, now seen corresponding path program 1 times [2020-08-21 14:47:52,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:47:52,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10717726] [2020-08-21 14:47:52,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:47:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:52,937 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:47:52,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:47:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:52,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:47:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:52,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:47:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:52,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:47:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:53,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:47:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:53,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:47:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:53,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 14:47:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:53,049 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 14:47:53,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10717726] [2020-08-21 14:47:53,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:47:53,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 14:47:53,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678600701] [2020-08-21 14:47:53,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 14:47:53,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:47:53,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 14:47:53,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 14:47:53,052 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand 8 states. [2020-08-21 14:47:53,393 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:47:53,687 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:47:53,951 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:47:54,175 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:47:55,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:47:55,196 INFO L93 Difference]: Finished difference Result 223 states and 270 transitions. [2020-08-21 14:47:55,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 14:47:55,196 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 14:47:55,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:47:55,200 INFO L225 Difference]: With dead ends: 223 [2020-08-21 14:47:55,200 INFO L226 Difference]: Without dead ends: 136 [2020-08-21 14:47:55,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:47:55,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-08-21 14:47:55,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 111. [2020-08-21 14:47:55,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-21 14:47:55,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2020-08-21 14:47:55,234 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 51 [2020-08-21 14:47:55,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:47:55,235 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2020-08-21 14:47:55,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 14:47:55,235 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2020-08-21 14:47:55,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 14:47:55,237 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:47:55,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:47:55,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:47:55,238 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:47:55,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:47:55,238 INFO L82 PathProgramCache]: Analyzing trace with hash 6417079, now seen corresponding path program 1 times [2020-08-21 14:47:55,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:47:55,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632114210] [2020-08-21 14:47:55,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:47:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:55,507 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:47:55,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:47:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:55,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:47:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:55,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:47:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:55,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:47:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:55,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:47:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:55,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 14:47:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:55,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:47:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:55,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 14:47:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:55,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 14:47:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:55,579 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 14:47:55,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632114210] [2020-08-21 14:47:55,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:47:55,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 14:47:55,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707845102] [2020-08-21 14:47:55,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 14:47:55,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:47:55,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 14:47:55,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 14:47:55,582 INFO L87 Difference]: Start difference. First operand 111 states and 126 transitions. Second operand 6 states. [2020-08-21 14:47:55,911 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:47:57,099 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:47:57,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:47:57,487 INFO L93 Difference]: Finished difference Result 306 states and 374 transitions. [2020-08-21 14:47:57,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 14:47:57,488 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-21 14:47:57,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:47:57,494 INFO L225 Difference]: With dead ends: 306 [2020-08-21 14:47:57,494 INFO L226 Difference]: Without dead ends: 219 [2020-08-21 14:47:57,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 14:47:57,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-08-21 14:47:57,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 178. [2020-08-21 14:47:57,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-08-21 14:47:57,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 203 transitions. [2020-08-21 14:47:57,542 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 203 transitions. Word has length 59 [2020-08-21 14:47:57,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:47:57,543 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 203 transitions. [2020-08-21 14:47:57,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 14:47:57,543 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 203 transitions. [2020-08-21 14:47:57,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-21 14:47:57,545 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:47:57,545 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:47:57,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 14:47:57,545 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:47:57,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:47:57,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1711068188, now seen corresponding path program 1 times [2020-08-21 14:47:57,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:47:57,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146786488] [2020-08-21 14:47:57,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:47:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:57,817 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:47:57,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:47:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:57,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:47:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:57,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:47:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:57,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:47:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:57,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:47:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:57,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 14:47:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:57,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:47:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:57,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:47:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:57,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:47:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:57,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 14:47:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:57,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 14:47:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:47:57,961 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 14:47:57,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146786488] [2020-08-21 14:47:57,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:47:57,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 14:47:57,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986519272] [2020-08-21 14:47:57,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 14:47:57,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:47:57,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 14:47:57,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-21 14:47:57,965 INFO L87 Difference]: Start difference. First operand 178 states and 203 transitions. Second operand 10 states. [2020-08-21 14:47:58,433 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:47:58,684 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:47:58,906 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:47:59,439 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:47:59,687 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:47:59,948 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:00,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:48:00,751 INFO L93 Difference]: Finished difference Result 374 states and 456 transitions. [2020-08-21 14:48:00,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 14:48:00,755 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-08-21 14:48:00,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:48:00,758 INFO L225 Difference]: With dead ends: 374 [2020-08-21 14:48:00,759 INFO L226 Difference]: Without dead ends: 220 [2020-08-21 14:48:00,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-08-21 14:48:00,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-08-21 14:48:00,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 182. [2020-08-21 14:48:00,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-21 14:48:00,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 207 transitions. [2020-08-21 14:48:00,799 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 207 transitions. Word has length 73 [2020-08-21 14:48:00,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:48:00,800 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 207 transitions. [2020-08-21 14:48:00,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 14:48:00,800 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 207 transitions. [2020-08-21 14:48:00,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-21 14:48:00,801 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:48:00,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:48:00,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 14:48:00,802 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:48:00,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:48:00,803 INFO L82 PathProgramCache]: Analyzing trace with hash -212159846, now seen corresponding path program 1 times [2020-08-21 14:48:00,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:48:00,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877874654] [2020-08-21 14:48:00,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:48:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,120 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:48:01,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:48:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:48:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:48:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:48:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 14:48:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:48:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 14:48:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 14:48:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:01,299 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 14:48:01,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877874654] [2020-08-21 14:48:01,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:48:01,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 14:48:01,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520356068] [2020-08-21 14:48:01,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 14:48:01,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:48:01,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 14:48:01,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:48:01,302 INFO L87 Difference]: Start difference. First operand 182 states and 207 transitions. Second operand 12 states. [2020-08-21 14:48:01,673 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:48:01,966 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:02,214 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:02,449 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:02,995 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:03,750 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:04,046 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:48:04,310 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:48:04,556 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:48:04,875 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:48:05,145 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:48:06,235 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:48:06,552 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:07,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:48:07,106 INFO L93 Difference]: Finished difference Result 644 states and 828 transitions. [2020-08-21 14:48:07,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 14:48:07,107 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-08-21 14:48:07,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:48:07,112 INFO L225 Difference]: With dead ends: 644 [2020-08-21 14:48:07,112 INFO L226 Difference]: Without dead ends: 486 [2020-08-21 14:48:07,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 14:48:07,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-08-21 14:48:07,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 428. [2020-08-21 14:48:07,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-08-21 14:48:07,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 499 transitions. [2020-08-21 14:48:07,206 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 499 transitions. Word has length 73 [2020-08-21 14:48:07,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:48:07,207 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 499 transitions. [2020-08-21 14:48:07,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 14:48:07,207 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 499 transitions. [2020-08-21 14:48:07,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-21 14:48:07,211 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:48:07,212 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:48:07,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 14:48:07,212 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:48:07,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:48:07,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1943233311, now seen corresponding path program 1 times [2020-08-21 14:48:07,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:48:07,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746807284] [2020-08-21 14:48:07,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:48:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,516 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:48:07,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:48:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:48:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:48:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:48:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:48:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 14:48:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:48:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:48:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 14:48:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-21 14:48:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-21 14:48:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 14:48:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 14:48:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:07,826 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-21 14:48:07,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746807284] [2020-08-21 14:48:07,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:48:07,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 14:48:07,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473630021] [2020-08-21 14:48:07,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 14:48:07,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:48:07,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 14:48:07,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 14:48:07,829 INFO L87 Difference]: Start difference. First operand 428 states and 499 transitions. Second operand 13 states. [2020-08-21 14:48:08,499 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:48:09,313 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:48:09,763 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:48:10,008 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 14:48:10,260 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:48:10,501 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:48:10,730 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:48:10,976 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 14:48:11,246 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:48:11,482 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:48:12,824 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:13,077 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:48:13,309 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:13,537 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:48:13,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:48:13,906 INFO L93 Difference]: Finished difference Result 767 states and 973 transitions. [2020-08-21 14:48:13,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 14:48:13,907 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 132 [2020-08-21 14:48:13,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:48:13,911 INFO L225 Difference]: With dead ends: 767 [2020-08-21 14:48:13,912 INFO L226 Difference]: Without dead ends: 363 [2020-08-21 14:48:13,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 14:48:13,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-08-21 14:48:13,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 313. [2020-08-21 14:48:13,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-08-21 14:48:13,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 368 transitions. [2020-08-21 14:48:13,977 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 368 transitions. Word has length 132 [2020-08-21 14:48:13,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:48:13,977 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 368 transitions. [2020-08-21 14:48:13,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 14:48:13,977 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 368 transitions. [2020-08-21 14:48:13,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-21 14:48:13,980 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:48:13,980 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:48:13,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 14:48:13,981 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:48:13,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:48:13,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1980525114, now seen corresponding path program 1 times [2020-08-21 14:48:13,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:48:13,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645793145] [2020-08-21 14:48:13,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:48:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:14,283 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:48:14,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:48:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:14,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:48:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:14,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:48:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:14,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:14,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:48:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:14,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:48:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:14,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 14:48:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:14,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:14,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:14,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:14,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:48:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:14,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:14,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:14,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:48:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:14,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:48:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:14,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:48:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:14,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 14:48:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:14,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 14:48:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:14,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:48:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:14,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 14:48:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:14,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 14:48:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:48:14,491 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 14:48:14,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645793145] [2020-08-21 14:48:14,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:48:14,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 14:48:14,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079347603] [2020-08-21 14:48:14,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 14:48:14,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:48:14,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 14:48:14,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:48:14,494 INFO L87 Difference]: Start difference. First operand 313 states and 368 transitions. Second operand 12 states. [2020-08-21 14:48:14,882 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:48:15,411 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:48:16,088 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:16,367 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:16,656 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:16,903 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:48:17,185 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:48:17,440 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:48:18,279 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:48:18,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:48:18,958 INFO L93 Difference]: Finished difference Result 727 states and 931 transitions. [2020-08-21 14:48:18,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 14:48:18,966 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-21 14:48:18,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:48:18,972 INFO L225 Difference]: With dead ends: 727 [2020-08-21 14:48:18,972 INFO L226 Difference]: Without dead ends: 492 [2020-08-21 14:48:18,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756 [2020-08-21 14:48:18,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-21 14:48:19,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 411. [2020-08-21 14:48:19,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2020-08-21 14:48:19,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 492 transitions. [2020-08-21 14:48:19,064 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 492 transitions. Word has length 128 [2020-08-21 14:48:19,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:48:19,064 INFO L479 AbstractCegarLoop]: Abstraction has 411 states and 492 transitions. [2020-08-21 14:48:19,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 14:48:19,065 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 492 transitions. [2020-08-21 14:48:19,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-21 14:48:19,071 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:48:19,071 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:48:19,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 14:48:19,072 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:48:19,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:48:19,072 INFO L82 PathProgramCache]: Analyzing trace with hash 2141115904, now seen corresponding path program 2 times [2020-08-21 14:48:19,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:48:19,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396766499] [2020-08-21 14:48:19,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:48:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 14:48:19,154 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 14:48:19,154 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 14:48:19,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 14:48:19,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 02:48:19 BoogieIcfgContainer [2020-08-21 14:48:19,197 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 14:48:19,200 INFO L168 Benchmark]: Toolchain (without parser) took 32170.08 ms. Allocated memory was 140.5 MB in the beginning and 659.6 MB in the end (delta: 519.0 MB). Free memory was 102.6 MB in the beginning and 529.5 MB in the end (delta: -426.9 MB). Peak memory consumption was 92.1 MB. Max. memory is 7.1 GB. [2020-08-21 14:48:19,201 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 14:48:19,202 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.18 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 102.4 MB in the beginning and 170.3 MB in the end (delta: -67.9 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-08-21 14:48:19,202 INFO L168 Benchmark]: Boogie Preprocessor took 92.11 ms. Allocated memory is still 202.9 MB. Free memory was 170.3 MB in the beginning and 166.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-21 14:48:19,203 INFO L168 Benchmark]: RCFGBuilder took 1210.26 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 166.3 MB in the beginning and 194.9 MB in the end (delta: -28.6 MB). Peak memory consumption was 80.8 MB. Max. memory is 7.1 GB. [2020-08-21 14:48:19,204 INFO L168 Benchmark]: TraceAbstraction took 30205.39 ms. Allocated memory was 235.4 MB in the beginning and 659.6 MB in the end (delta: 424.1 MB). Free memory was 193.5 MB in the beginning and 529.5 MB in the end (delta: -336.0 MB). Peak memory consumption was 88.1 MB. Max. memory is 7.1 GB. [2020-08-21 14:48:19,208 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 657.18 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 102.4 MB in the beginning and 170.3 MB in the end (delta: -67.9 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.11 ms. Allocated memory is still 202.9 MB. Free memory was 170.3 MB in the beginning and 166.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1210.26 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 166.3 MB in the beginning and 194.9 MB in the end (delta: -28.6 MB). Peak memory consumption was 80.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30205.39 ms. Allocated memory was 235.4 MB in the beginning and 659.6 MB in the end (delta: 424.1 MB). Free memory was 193.5 MB in the beginning and 529.5 MB in the end (delta: -336.0 MB). Peak memory consumption was 88.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 211]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L385] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L652] int pumpRunning = 0; [L653] int systemActive = 1; [L822] int cleanupTimeShifts = 4; [L895] int retValue_acc ; [L896] int tmp ; [L900] FCALL select_helpers() [L901] FCALL select_features() [L902] CALL, EXPR valid_product() [L198] int retValue_acc ; [L201] retValue_acc = 1 [L202] return (retValue_acc); [L902] RET, EXPR valid_product() [L902] tmp = valid_product() [L904] COND TRUE \read(tmp) [L906] FCALL setup() [L907] CALL runTest() [L889] CALL test() [L585] int splverifierCounter ; [L586] int tmp ; [L587] int tmp___0 ; [L588] int tmp___1 ; [L589] int tmp___2 ; [L592] splverifierCounter = 0 [L594] COND TRUE 1 [L596] COND TRUE splverifierCounter < 4 [L602] tmp = __VERIFIER_nondet_int() [L604] COND TRUE \read(tmp) [L606] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L606] RET waterRise() [L612] tmp___0 = __VERIFIER_nondet_int() [L614] COND FALSE !(\read(tmp___0)) [L622] tmp___2 = __VERIFIER_nondet_int() [L624] COND TRUE \read(tmp___2) [L637] CALL timeShift() [L659] COND FALSE !(\read(pumpRunning)) [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND TRUE ! pumpRunning [L693] CALL, EXPR isHighWaterLevel() [L803] int retValue_acc ; [L804] int tmp ; [L805] int tmp___0 ; [L809] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L809] RET, EXPR isHighWaterSensorDry() [L809] tmp = isHighWaterSensorDry() [L811] COND FALSE !(\read(tmp)) [L814] tmp___0 = 1 [L816] retValue_acc = tmp___0 [L817] return (retValue_acc); [L693] RET, EXPR isHighWaterLevel() [L693] tmp = isHighWaterLevel() [L695] COND TRUE \read(tmp) [L697] CALL activatePump() [L722] int tmp ; [L726] CALL, EXPR isMethaneAlarm() [L747] int retValue_acc ; [L751] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L751] RET, EXPR isMethaneLevelCritical() [L751] retValue_acc = isMethaneLevelCritical() [L753] return (retValue_acc); [L726] RET, EXPR isMethaneAlarm() [L726] tmp = isMethaneAlarm() [L728] COND FALSE !(\read(tmp)) [L732] CALL activatePump__wrappee__highWaterSensor() [L716] pumpRunning = 1 [L732] RET activatePump__wrappee__highWaterSensor() [L697] RET activatePump() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification4_spec__1() [L144] int tmp ; [L145] int tmp___0 ; [L149] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L149] RET, EXPR getWaterLevel() [L149] tmp = getWaterLevel() [L151] COND FALSE !(tmp == 0) [L674] RET __utac_acc__Specification4_spec__1() [L637] RET timeShift() [L594] COND TRUE 1 [L596] COND TRUE splverifierCounter < 4 [L602] tmp = __VERIFIER_nondet_int() [L604] COND FALSE !(\read(tmp)) [L612] tmp___0 = __VERIFIER_nondet_int() [L614] COND FALSE !(\read(tmp___0)) [L622] tmp___2 = __VERIFIER_nondet_int() [L624] COND TRUE \read(tmp___2) [L637] CALL timeShift() [L659] COND TRUE \read(pumpRunning) [L661] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L661] RET lowerWaterLevel() [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND FALSE !(! pumpRunning) [L706] FCALL processEnvironment__wrappee__base() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification4_spec__1() [L144] int tmp ; [L145] int tmp___0 ; [L149] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L149] RET, EXPR getWaterLevel() [L149] tmp = getWaterLevel() [L151] COND FALSE !(tmp == 0) [L674] RET __utac_acc__Specification4_spec__1() [L637] RET timeShift() [L594] COND TRUE 1 [L596] COND TRUE splverifierCounter < 4 [L602] tmp = __VERIFIER_nondet_int() [L604] COND FALSE !(\read(tmp)) [L612] tmp___0 = __VERIFIER_nondet_int() [L614] COND FALSE !(\read(tmp___0)) [L622] tmp___2 = __VERIFIER_nondet_int() [L624] COND TRUE \read(tmp___2) [L637] CALL timeShift() [L659] COND TRUE \read(pumpRunning) [L661] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L661] RET lowerWaterLevel() [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND FALSE !(! pumpRunning) [L706] FCALL processEnvironment__wrappee__base() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification4_spec__1() [L144] int tmp ; [L145] int tmp___0 ; [L149] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L149] RET, EXPR getWaterLevel() [L149] tmp = getWaterLevel() [L151] COND TRUE tmp == 0 [L153] CALL, EXPR isPumpRunning() [L758] int retValue_acc ; [L761] retValue_acc = pumpRunning [L762] return (retValue_acc); [L153] RET, EXPR isPumpRunning() [L153] tmp___0 = isPumpRunning() [L155] COND TRUE \read(tmp___0) [L157] CALL __automaton_fail() [L211] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 222 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.1s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 25.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 901 SDtfs, 1922 SDslu, 1109 SDs, 0 SdLazy, 5419 SolverSat, 1225 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 338 GetRequests, 215 SyntacticMatches, 5 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 13.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=428occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 350 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 772 NumberOfCodeBlocks, 772 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 601 ConstructedInterpolants, 0 QuantifiedInterpolants, 204026 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 44/52 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...