/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:57:14,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:57:14,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:57:14,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:57:14,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:57:14,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:57:14,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:57:14,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:57:14,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:57:14,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:57:14,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:57:14,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:57:14,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:57:14,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:57:14,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:57:14,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:57:14,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:57:14,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:57:14,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:57:14,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:57:14,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:57:14,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:57:14,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:57:14,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:57:14,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:57:14,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:57:14,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:57:14,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:57:14,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:57:14,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:57:14,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:57:14,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:57:14,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:57:14,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:57:14,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:57:14,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:57:14,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:57:14,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:57:14,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:57:14,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:57:14,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:57:14,630 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 16:57:14,675 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:57:14,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:57:14,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:57:14,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:57:14,679 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:57:14,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:57:14,680 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:57:14,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:57:14,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:57:14,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:57:14,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:57:14,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:57:14,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:57:14,683 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:57:14,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:57:14,683 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:57:14,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:57:14,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:57:14,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:57:14,684 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:57:14,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:57:14,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:57:14,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:57:14,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:57:14,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:57:14,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:57:14,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:57:14,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:57:14,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:57:14,686 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 16:57:15,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:57:15,035 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:57:15,038 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:57:15,040 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:57:15,040 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:57:15,041 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c [2020-08-18 16:57:15,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a48a208d/7ba8d63e0b96423ea1068c04d355318c/FLAG1f356cf76 [2020-08-18 16:57:15,619 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:57:15,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c [2020-08-18 16:57:15,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a48a208d/7ba8d63e0b96423ea1068c04d355318c/FLAG1f356cf76 [2020-08-18 16:57:15,948 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a48a208d/7ba8d63e0b96423ea1068c04d355318c [2020-08-18 16:57:15,956 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:57:15,957 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:57:15,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:57:15,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:57:15,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:57:15,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:57:15" (1/1) ... [2020-08-18 16:57:15,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4207e6a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:57:15, skipping insertion in model container [2020-08-18 16:57:15,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:57:15" (1/1) ... [2020-08-18 16:57:15,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:57:16,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:57:16,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:57:16,495 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:57:16,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:57:16,611 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:57:16,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:57:16 WrapperNode [2020-08-18 16:57:16,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:57:16,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:57:16,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:57:16,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:57:16,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:57:16" (1/1) ... [2020-08-18 16:57:16,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:57:16" (1/1) ... [2020-08-18 16:57:16,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:57:16" (1/1) ... [2020-08-18 16:57:16,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:57:16" (1/1) ... [2020-08-18 16:57:16,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:57:16" (1/1) ... [2020-08-18 16:57:16,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:57:16" (1/1) ... [2020-08-18 16:57:16,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:57:16" (1/1) ... [2020-08-18 16:57:16,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:57:16,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:57:16,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:57:16,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:57:16,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:57:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:57:16,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:57:16,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:57:16,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:57:16,804 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:57:16,805 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:57:16,805 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:57:16,805 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:57:16,805 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 16:57:16,806 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:57:16,806 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:57:16,807 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:57:16,807 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:57:16,807 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:57:16,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:57:16,808 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 16:57:16,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:57:16,809 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:57:16,809 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:57:16,809 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:57:16,809 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:57:16,810 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:57:16,810 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:57:16,810 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:57:16,810 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:57:16,810 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:57:16,811 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:57:16,811 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:57:16,812 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:57:16,812 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:57:16,812 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:57:16,812 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:57:16,813 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:57:16,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:57:16,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:57:16,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:57:16,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:57:16,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:57:16,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:57:16,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 16:57:16,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:57:16,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:57:16,814 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:57:16,815 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:57:16,815 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:57:16,815 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 16:57:16,816 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:57:16,817 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:57:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:57:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:57:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:57:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:57:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:57:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:57:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:57:16,819 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:57:16,819 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:57:16,819 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 16:57:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:57:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:57:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:57:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 16:57:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:57:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:57:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:57:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:57:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:57:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:57:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:57:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:57:16,822 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:57:16,822 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:57:16,822 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:57:16,823 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:57:16,823 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:57:16,824 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:57:16,824 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:57:16,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:57:16,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:57:16,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:57:16,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:57:16,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:57:16,826 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:57:16,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:57:16,826 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:57:16,827 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:57:16,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:57:16,827 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:57:16,827 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:57:16,827 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:57:16,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:57:16,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:57:16,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:57:17,936 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:57:17,936 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:57:17,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:57:17 BoogieIcfgContainer [2020-08-18 16:57:17,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:57:17,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:57:17,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:57:17,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:57:17,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:57:15" (1/3) ... [2020-08-18 16:57:17,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d623b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:57:17, skipping insertion in model container [2020-08-18 16:57:17,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:57:16" (2/3) ... [2020-08-18 16:57:17,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d623b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:57:17, skipping insertion in model container [2020-08-18 16:57:17,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:57:17" (3/3) ... [2020-08-18 16:57:17,958 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product43.cil.c [2020-08-18 16:57:17,969 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:57:17,979 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:57:17,996 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:57:18,031 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:57:18,032 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:57:18,032 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:57:18,032 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:57:18,032 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:57:18,033 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:57:18,033 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:57:18,033 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:57:18,064 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2020-08-18 16:57:18,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 16:57:18,078 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:57:18,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:57:18,080 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:57:18,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:57:18,089 INFO L82 PathProgramCache]: Analyzing trace with hash 104665002, now seen corresponding path program 1 times [2020-08-18 16:57:18,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:57:18,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098641658] [2020-08-18 16:57:18,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:57:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:18,788 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:57:18,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:57:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:18,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:57:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:18,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:57:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:18,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:57:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:18,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:57:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:18,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:57:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:18,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:57:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:18,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:57:18,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098641658] [2020-08-18 16:57:18,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:57:18,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:57:18,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704150129] [2020-08-18 16:57:18,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:57:18,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:57:18,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:57:18,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:57:18,952 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 3 states. [2020-08-18 16:57:20,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:57:20,076 INFO L93 Difference]: Finished difference Result 301 states and 388 transitions. [2020-08-18 16:57:20,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:57:20,078 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 16:57:20,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:57:20,093 INFO L225 Difference]: With dead ends: 301 [2020-08-18 16:57:20,094 INFO L226 Difference]: Without dead ends: 163 [2020-08-18 16:57:20,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:57:20,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-08-18 16:57:20,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 129. [2020-08-18 16:57:20,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-18 16:57:20,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2020-08-18 16:57:20,197 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 46 [2020-08-18 16:57:20,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:57:20,198 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2020-08-18 16:57:20,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:57:20,198 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2020-08-18 16:57:20,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 16:57:20,206 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:57:20,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:57:20,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:57:20,206 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:57:20,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:57:20,207 INFO L82 PathProgramCache]: Analyzing trace with hash 149584290, now seen corresponding path program 1 times [2020-08-18 16:57:20,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:57:20,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430141339] [2020-08-18 16:57:20,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:57:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:20,625 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:57:20,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:57:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:20,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:57:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:20,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:57:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:20,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:57:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:20,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:57:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:20,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:57:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:20,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:57:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:20,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:57:20,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430141339] [2020-08-18 16:57:20,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:57:20,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:57:20,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777989167] [2020-08-18 16:57:20,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:57:20,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:57:20,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:57:20,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:57:20,716 INFO L87 Difference]: Start difference. First operand 129 states and 149 transitions. Second operand 4 states. [2020-08-18 16:57:21,106 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:57:21,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:57:21,936 INFO L93 Difference]: Finished difference Result 225 states and 269 transitions. [2020-08-18 16:57:21,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:57:21,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 16:57:21,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:57:21,944 INFO L225 Difference]: With dead ends: 225 [2020-08-18 16:57:21,944 INFO L226 Difference]: Without dead ends: 147 [2020-08-18 16:57:21,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:57:21,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-18 16:57:21,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 120. [2020-08-18 16:57:21,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-18 16:57:21,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 137 transitions. [2020-08-18 16:57:21,981 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 137 transitions. Word has length 47 [2020-08-18 16:57:21,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:57:21,982 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 137 transitions. [2020-08-18 16:57:21,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:57:21,982 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 137 transitions. [2020-08-18 16:57:21,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 16:57:21,984 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:57:21,984 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] [2020-08-18 16:57:21,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:57:21,985 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:57:21,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:57:21,985 INFO L82 PathProgramCache]: Analyzing trace with hash 964261252, now seen corresponding path program 1 times [2020-08-18 16:57:21,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:57:21,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513053284] [2020-08-18 16:57:21,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:57:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:22,326 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:57:22,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:57:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:22,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:57:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:22,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:57:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:22,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:57:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:22,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:57:22,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:22,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:57:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:22,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:57:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:22,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:57:22,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513053284] [2020-08-18 16:57:22,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:57:22,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:57:22,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801889847] [2020-08-18 16:57:22,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:57:22,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:57:22,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:57:22,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:57:22,467 INFO L87 Difference]: Start difference. First operand 120 states and 137 transitions. Second operand 8 states. [2020-08-18 16:57:22,789 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:57:23,074 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:57:23,338 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:57:23,583 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:57:24,324 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:57:25,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:57:25,947 INFO L93 Difference]: Finished difference Result 412 states and 501 transitions. [2020-08-18 16:57:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:57:25,949 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 16:57:25,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:57:25,955 INFO L225 Difference]: With dead ends: 412 [2020-08-18 16:57:25,955 INFO L226 Difference]: Without dead ends: 316 [2020-08-18 16:57:25,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 16:57:25,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-08-18 16:57:26,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 246. [2020-08-18 16:57:26,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-08-18 16:57:26,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 290 transitions. [2020-08-18 16:57:26,026 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 290 transitions. Word has length 51 [2020-08-18 16:57:26,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:57:26,026 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 290 transitions. [2020-08-18 16:57:26,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:57:26,027 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 290 transitions. [2020-08-18 16:57:26,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 16:57:26,029 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:57:26,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:57:26,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:57:26,030 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:57:26,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:57:26,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1270230841, now seen corresponding path program 1 times [2020-08-18 16:57:26,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:57:26,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156729952] [2020-08-18 16:57:26,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:57:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:26,327 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:57:26,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:57:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:26,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:57:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:26,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:57:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:26,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:57:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:26,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:57:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:26,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:57:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:26,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:57:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:26,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 16:57:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:26,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:57:26,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156729952] [2020-08-18 16:57:26,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:57:26,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 16:57:26,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487548382] [2020-08-18 16:57:26,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:57:26,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:57:26,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:57:26,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:57:26,448 INFO L87 Difference]: Start difference. First operand 246 states and 290 transitions. Second operand 12 states. [2020-08-18 16:57:26,918 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:57:27,248 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:57:27,486 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:57:27,716 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:57:28,310 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:57:29,100 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:57:29,461 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:57:29,773 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:57:30,060 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:57:30,313 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:57:30,643 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:57:30,895 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:57:31,180 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:57:32,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:57:32,921 INFO L93 Difference]: Finished difference Result 993 states and 1338 transitions. [2020-08-18 16:57:32,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 16:57:32,921 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-18 16:57:32,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:57:32,932 INFO L225 Difference]: With dead ends: 993 [2020-08-18 16:57:32,932 INFO L226 Difference]: Without dead ends: 771 [2020-08-18 16:57:32,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 16:57:32,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2020-08-18 16:57:33,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 678. [2020-08-18 16:57:33,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-18 16:57:33,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 836 transitions. [2020-08-18 16:57:33,102 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 836 transitions. Word has length 57 [2020-08-18 16:57:33,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:57:33,103 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 836 transitions. [2020-08-18 16:57:33,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:57:33,103 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 836 transitions. [2020-08-18 16:57:33,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 16:57:33,108 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:57:33,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:57:33,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:57:33,108 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:57:33,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:57:33,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1043234783, now seen corresponding path program 1 times [2020-08-18 16:57:33,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:57:33,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420855526] [2020-08-18 16:57:33,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:57:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:33,359 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:57:33,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:57:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:33,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:57:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:33,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:57:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:33,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:57:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:33,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:57:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:33,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:57:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:33,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:57:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:33,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:57:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:33,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 16:57:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:33,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:57:33,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420855526] [2020-08-18 16:57:33,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:57:33,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 16:57:33,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964411821] [2020-08-18 16:57:33,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:57:33,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:57:33,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:57:33,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:57:33,474 INFO L87 Difference]: Start difference. First operand 678 states and 836 transitions. Second operand 6 states. [2020-08-18 16:57:33,826 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:57:35,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:57:35,486 INFO L93 Difference]: Finished difference Result 1641 states and 2151 transitions. [2020-08-18 16:57:35,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 16:57:35,488 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-18 16:57:35,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:57:35,496 INFO L225 Difference]: With dead ends: 1641 [2020-08-18 16:57:35,496 INFO L226 Difference]: Without dead ends: 987 [2020-08-18 16:57:35,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:57:35,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-18 16:57:35,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 924. [2020-08-18 16:57:35,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2020-08-18 16:57:35,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1148 transitions. [2020-08-18 16:57:35,710 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1148 transitions. Word has length 61 [2020-08-18 16:57:35,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:57:35,711 INFO L479 AbstractCegarLoop]: Abstraction has 924 states and 1148 transitions. [2020-08-18 16:57:35,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:57:35,711 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1148 transitions. [2020-08-18 16:57:35,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 16:57:35,714 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:57:35,714 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:57:35,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:57:35,715 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:57:35,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:57:35,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1818048574, now seen corresponding path program 1 times [2020-08-18 16:57:35,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:57:35,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932302007] [2020-08-18 16:57:35,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:57:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:35,963 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:57:35,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:57:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:35,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:57:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:36,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:57:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:36,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:57:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:36,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:57:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:36,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:57:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:36,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:57:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:36,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 16:57:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:36,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:57:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:36,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:57:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:36,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 16:57:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:36,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 16:57:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:36,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 16:57:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:36,123 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 16:57:36,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932302007] [2020-08-18 16:57:36,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:57:36,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 16:57:36,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346519381] [2020-08-18 16:57:36,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:57:36,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:57:36,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:57:36,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:57:36,126 INFO L87 Difference]: Start difference. First operand 924 states and 1148 transitions. Second operand 10 states. [2020-08-18 16:57:36,844 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-18 16:57:37,378 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:57:39,305 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:57:40,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:57:40,658 INFO L93 Difference]: Finished difference Result 1747 states and 2251 transitions. [2020-08-18 16:57:40,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 16:57:40,659 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 16:57:40,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:57:40,668 INFO L225 Difference]: With dead ends: 1747 [2020-08-18 16:57:40,668 INFO L226 Difference]: Without dead ends: 1110 [2020-08-18 16:57:40,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-18 16:57:40,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2020-08-18 16:57:40,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1031. [2020-08-18 16:57:40,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2020-08-18 16:57:40,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1260 transitions. [2020-08-18 16:57:40,874 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1260 transitions. Word has length 88 [2020-08-18 16:57:40,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:57:40,876 INFO L479 AbstractCegarLoop]: Abstraction has 1031 states and 1260 transitions. [2020-08-18 16:57:40,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:57:40,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1260 transitions. [2020-08-18 16:57:40,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-18 16:57:40,881 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:57:40,882 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:57:40,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:57:40,883 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:57:40,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:57:40,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1842113163, now seen corresponding path program 1 times [2020-08-18 16:57:40,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:57:40,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952711780] [2020-08-18 16:57:40,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:57:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:41,149 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:57:41,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:57:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:41,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:57:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:41,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:57:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:41,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:57:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:41,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:57:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:41,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:57:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:41,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:57:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:41,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:57:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:41,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:57:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:41,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:57:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:41,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:57:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:41,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:57:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:41,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:57:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:41,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:57:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:41,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:57:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:41,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 16:57:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:41,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 16:57:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:41,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:57:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:41,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-18 16:57:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:41,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 16:57:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:41,371 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 16:57:41,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952711780] [2020-08-18 16:57:41,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:57:41,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 16:57:41,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735416242] [2020-08-18 16:57:41,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:57:41,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:57:41,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:57:41,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:57:41,378 INFO L87 Difference]: Start difference. First operand 1031 states and 1260 transitions. Second operand 10 states. [2020-08-18 16:57:42,176 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:57:42,440 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:57:42,689 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:57:42,930 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:57:44,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:57:44,089 INFO L93 Difference]: Finished difference Result 2179 states and 2840 transitions. [2020-08-18 16:57:44,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:57:44,090 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 124 [2020-08-18 16:57:44,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:57:44,100 INFO L225 Difference]: With dead ends: 2179 [2020-08-18 16:57:44,100 INFO L226 Difference]: Without dead ends: 1172 [2020-08-18 16:57:44,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:57:44,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2020-08-18 16:57:44,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1061. [2020-08-18 16:57:44,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1061 states. [2020-08-18 16:57:44,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1294 transitions. [2020-08-18 16:57:44,326 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1294 transitions. Word has length 124 [2020-08-18 16:57:44,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:57:44,326 INFO L479 AbstractCegarLoop]: Abstraction has 1061 states and 1294 transitions. [2020-08-18 16:57:44,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:57:44,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1294 transitions. [2020-08-18 16:57:44,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-18 16:57:44,340 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:57:44,341 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] [2020-08-18 16:57:44,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:57:44,342 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:57:44,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:57:44,342 INFO L82 PathProgramCache]: Analyzing trace with hash -721880881, now seen corresponding path program 1 times [2020-08-18 16:57:44,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:57:44,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336481346] [2020-08-18 16:57:44,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:57:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:44,654 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:57:44,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:57:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:44,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:57:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:44,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:57:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:44,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:57:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:44,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:57:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:44,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:57:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:44,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:57:44,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:44,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:57:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:44,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:57:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:44,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:57:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:44,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:57:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:44,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:57:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:44,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:57:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:44,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:57:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:44,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:57:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:44,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 16:57:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:44,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 16:57:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:44,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 16:57:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:44,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:57:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:44,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 16:57:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:44,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 16:57:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 16:57:44,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336481346] [2020-08-18 16:57:44,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:57:44,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 16:57:44,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943142634] [2020-08-18 16:57:44,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:57:44,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:57:44,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:57:44,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:57:44,849 INFO L87 Difference]: Start difference. First operand 1061 states and 1294 transitions. Second operand 12 states. [2020-08-18 16:57:45,497 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:57:45,732 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:57:45,978 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:57:46,595 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:57:46,862 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:57:47,116 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:57:48,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:57:48,173 INFO L93 Difference]: Finished difference Result 1923 states and 2415 transitions. [2020-08-18 16:57:48,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:57:48,174 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-18 16:57:48,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:57:48,179 INFO L225 Difference]: With dead ends: 1923 [2020-08-18 16:57:48,179 INFO L226 Difference]: Without dead ends: 886 [2020-08-18 16:57:48,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:57:48,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2020-08-18 16:57:48,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 836. [2020-08-18 16:57:48,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-18 16:57:48,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1009 transitions. [2020-08-18 16:57:48,353 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1009 transitions. Word has length 128 [2020-08-18 16:57:48,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:57:48,354 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1009 transitions. [2020-08-18 16:57:48,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:57:48,354 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1009 transitions. [2020-08-18 16:57:48,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-18 16:57:48,357 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:57:48,358 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] [2020-08-18 16:57:48,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:57:48,358 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:57:48,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:57:48,359 INFO L82 PathProgramCache]: Analyzing trace with hash 315789474, now seen corresponding path program 1 times [2020-08-18 16:57:48,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:57:48,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105286921] [2020-08-18 16:57:48,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:57:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:48,675 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:57:48,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:57:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:48,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:57:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:48,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:57:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:48,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:57:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:48,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:57:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:48,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:57:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:48,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:57:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:48,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:57:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:48,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:57:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:48,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:57:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:48,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:57:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:48,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:57:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:48,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:57:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:48,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:57:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:48,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:57:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:48,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:57:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:48,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 16:57:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:48,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 16:57:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:48,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:57:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:48,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 16:57:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:48,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 16:57:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:57:48,882 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:57:48,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105286921] [2020-08-18 16:57:48,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:57:48,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 16:57:48,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818452612] [2020-08-18 16:57:48,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:57:48,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:57:48,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:57:48,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:57:48,884 INFO L87 Difference]: Start difference. First operand 836 states and 1009 transitions. Second operand 12 states. [2020-08-18 16:57:49,354 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:57:49,989 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:57:50,512 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:57:50,795 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:57:51,054 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:57:51,333 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:57:51,647 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:57:51,904 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:57:53,289 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:57:54,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:57:54,101 INFO L93 Difference]: Finished difference Result 1991 states and 2602 transitions. [2020-08-18 16:57:54,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 16:57:54,102 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-18 16:57:54,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:57:54,112 INFO L225 Difference]: With dead ends: 1991 [2020-08-18 16:57:54,112 INFO L226 Difference]: Without dead ends: 1324 [2020-08-18 16:57:54,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=240, Invalid=572, Unknown=0, NotChecked=0, Total=812 [2020-08-18 16:57:54,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2020-08-18 16:57:54,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1102. [2020-08-18 16:57:54,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-08-18 16:57:54,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1352 transitions. [2020-08-18 16:57:54,357 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1352 transitions. Word has length 128 [2020-08-18 16:57:54,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:57:54,359 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1352 transitions. [2020-08-18 16:57:54,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:57:54,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1352 transitions. [2020-08-18 16:57:54,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-18 16:57:54,364 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:57:54,364 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] [2020-08-18 16:57:54,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:57:54,364 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:57:54,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:57:54,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1874994186, now seen corresponding path program 2 times [2020-08-18 16:57:54,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:57:54,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356733773] [2020-08-18 16:57:54,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:57:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 16:57:54,438 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 16:57:54,439 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 16:57:54,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:57:54,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:57:54 BoogieIcfgContainer [2020-08-18 16:57:54,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:57:54,495 INFO L168 Benchmark]: Toolchain (without parser) took 38537.46 ms. Allocated memory was 140.0 MB in the beginning and 691.0 MB in the end (delta: 551.0 MB). Free memory was 102.2 MB in the beginning and 570.7 MB in the end (delta: -468.5 MB). Peak memory consumption was 82.5 MB. Max. memory is 7.1 GB. [2020-08-18 16:57:54,496 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 16:57:54,496 INFO L168 Benchmark]: CACSL2BoogieTranslator took 654.11 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 102.0 MB in the beginning and 169.2 MB in the end (delta: -67.2 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-08-18 16:57:54,497 INFO L168 Benchmark]: Boogie Preprocessor took 99.53 ms. Allocated memory is still 201.9 MB. Free memory was 169.2 MB in the beginning and 165.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-18 16:57:54,498 INFO L168 Benchmark]: RCFGBuilder took 1235.23 ms. Allocated memory was 201.9 MB in the beginning and 235.9 MB in the end (delta: 34.1 MB). Free memory was 165.1 MB in the beginning and 196.6 MB in the end (delta: -31.5 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. [2020-08-18 16:57:54,498 INFO L168 Benchmark]: TraceAbstraction took 36543.89 ms. Allocated memory was 235.9 MB in the beginning and 691.0 MB in the end (delta: 455.1 MB). Free memory was 196.6 MB in the beginning and 570.7 MB in the end (delta: -374.1 MB). Peak memory consumption was 80.9 MB. Max. memory is 7.1 GB. [2020-08-18 16:57:54,502 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 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 654.11 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 102.0 MB in the beginning and 169.2 MB in the end (delta: -67.2 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.53 ms. Allocated memory is still 201.9 MB. Free memory was 169.2 MB in the beginning and 165.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1235.23 ms. Allocated memory was 201.9 MB in the beginning and 235.9 MB in the end (delta: 34.1 MB). Free memory was 165.1 MB in the beginning and 196.6 MB in the end (delta: -31.5 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36543.89 ms. Allocated memory was 235.9 MB in the beginning and 691.0 MB in the end (delta: 455.1 MB). Free memory was 196.6 MB in the beginning and 570.7 MB in the end (delta: -374.1 MB). Peak memory consumption was 80.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 310]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L120] int pumpRunning = 0; [L121] int systemActive = 1; [L315] int cleanupTimeShifts = 4; [L415] int waterLevel = 1; [L416] int methaneLevelCritical = 0; [L713] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L391] int retValue_acc ; [L392] int tmp ; [L396] FCALL select_helpers() [L397] FCALL select_features() [L398] CALL, EXPR valid_product() [L535] int retValue_acc ; [L538] retValue_acc = 1 [L539] return (retValue_acc); [L398] RET, EXPR valid_product() [L398] tmp = valid_product() [L400] COND TRUE \read(tmp) [L402] FCALL setup() [L403] CALL runTest() [L382] CALL test() [L46] int splverifierCounter ; [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L50] int tmp___2 ; [L53] splverifierCounter = 0 [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND TRUE \read(tmp) [L67] CALL waterRise() [L433] COND TRUE waterLevel < 2 [L434] waterLevel = waterLevel + 1 [L67] RET waterRise() [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L128] COND FALSE !(\read(pumpRunning)) [L135] COND TRUE \read(systemActive) [L137] CALL processEnvironment() [L157] int tmp ; [L160] COND TRUE ! pumpRunning [L162] CALL, EXPR isHighWaterLevel() [L272] int retValue_acc ; [L273] int tmp ; [L274] int tmp___0 ; [L278] CALL, EXPR isHighWaterSensorDry() [L495] int retValue_acc ; [L498] COND FALSE !(waterLevel < 2) [L502] retValue_acc = 0 [L503] return (retValue_acc); [L278] RET, EXPR isHighWaterSensorDry() [L278] tmp = isHighWaterSensorDry() [L280] COND FALSE !(\read(tmp)) [L283] tmp___0 = 1 [L285] retValue_acc = tmp___0 [L286] return (retValue_acc); [L162] RET, EXPR isHighWaterLevel() [L162] tmp = isHighWaterLevel() [L164] COND TRUE \read(tmp) [L166] CALL activatePump() [L191] int tmp ; [L195] CALL, EXPR isMethaneAlarm() [L216] int retValue_acc ; [L220] CALL, EXPR isMethaneLevelCritical() [L454] int retValue_acc ; [L457] retValue_acc = methaneLevelCritical [L458] return (retValue_acc); [L220] RET, EXPR isMethaneLevelCritical() [L220] retValue_acc = isMethaneLevelCritical() [L222] return (retValue_acc); [L195] RET, EXPR isMethaneAlarm() [L195] tmp = isMethaneAlarm() [L197] COND FALSE !(\read(tmp)) [L201] CALL activatePump__wrappee__highWaterSensor() [L185] pumpRunning = 1 [L201] RET activatePump__wrappee__highWaterSensor() [L166] RET activatePump() [L137] RET processEnvironment() [L143] CALL __utac_acc__Specification4_spec__1() [L911] int tmp ; [L912] int tmp___0 ; [L916] CALL, EXPR getWaterLevel() [L486] int retValue_acc ; [L489] retValue_acc = waterLevel [L490] return (retValue_acc); [L916] RET, EXPR getWaterLevel() [L916] tmp = getWaterLevel() [L918] COND FALSE !(tmp == 0) [L143] RET __utac_acc__Specification4_spec__1() [L100] RET timeShift() [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND FALSE !(\read(tmp)) [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L128] COND TRUE \read(pumpRunning) [L130] CALL lowerWaterLevel() [L421] COND TRUE waterLevel > 0 [L422] waterLevel = waterLevel - 1 [L130] RET lowerWaterLevel() [L135] COND TRUE \read(systemActive) [L137] CALL processEnvironment() [L157] int tmp ; [L160] COND FALSE !(! pumpRunning) [L175] FCALL processEnvironment__wrappee__base() [L137] RET processEnvironment() [L143] CALL __utac_acc__Specification4_spec__1() [L911] int tmp ; [L912] int tmp___0 ; [L916] CALL, EXPR getWaterLevel() [L486] int retValue_acc ; [L489] retValue_acc = waterLevel [L490] return (retValue_acc); [L916] RET, EXPR getWaterLevel() [L916] tmp = getWaterLevel() [L918] COND FALSE !(tmp == 0) [L143] RET __utac_acc__Specification4_spec__1() [L100] RET timeShift() [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND FALSE !(\read(tmp)) [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L128] COND TRUE \read(pumpRunning) [L130] CALL lowerWaterLevel() [L421] COND TRUE waterLevel > 0 [L422] waterLevel = waterLevel - 1 [L130] RET lowerWaterLevel() [L135] COND TRUE \read(systemActive) [L137] CALL processEnvironment() [L157] int tmp ; [L160] COND FALSE !(! pumpRunning) [L175] FCALL processEnvironment__wrappee__base() [L137] RET processEnvironment() [L143] CALL __utac_acc__Specification4_spec__1() [L911] int tmp ; [L912] int tmp___0 ; [L916] CALL, EXPR getWaterLevel() [L486] int retValue_acc ; [L489] retValue_acc = waterLevel [L490] return (retValue_acc); [L916] RET, EXPR getWaterLevel() [L916] tmp = getWaterLevel() [L918] COND TRUE tmp == 0 [L920] CALL, EXPR isPumpRunning() [L227] int retValue_acc ; [L230] retValue_acc = pumpRunning [L231] return (retValue_acc); [L920] RET, EXPR isPumpRunning() [L920] tmp___0 = isPumpRunning() [L922] COND TRUE \read(tmp___0) [L924] CALL __automaton_fail() [L310] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 228 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 36.4s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 30.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1121 SDtfs, 2507 SDslu, 1336 SDs, 0 SdLazy, 7042 SolverSat, 1679 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 250 SyntacticMatches, 6 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 12.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1102occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 749 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 893 NumberOfCodeBlocks, 893 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 721 ConstructedInterpolants, 0 QuantifiedInterpolants, 243690 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 80/95 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...