/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:25:18,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:25:18,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:25:18,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:25:18,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:25:18,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:25:18,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:25:18,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:25:18,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:25:18,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:25:18,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:25:18,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:25:18,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:25:18,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:25:18,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:25:18,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:25:18,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:25:18,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:25:18,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:25:18,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:25:18,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:25:18,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:25:18,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:25:18,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:25:18,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:25:18,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:25:18,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:25:18,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:25:18,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:25:18,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:25:18,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:25:18,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:25:18,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:25:18,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:25:18,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:25:18,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:25:18,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:25:18,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:25:18,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:25:18,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:25:18,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:25:18,657 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 04:25:18,700 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:25:18,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:25:18,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:25:18,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:25:18,702 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:25:18,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:25:18,702 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:25:18,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:25:18,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:25:18,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:25:18,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:25:18,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:25:18,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:25:18,704 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:25:18,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:25:18,704 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:25:18,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:25:18,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:25:18,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:25:18,705 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:25:18,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:25:18,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:25:18,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:25:18,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:25:18,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:25:18,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:25:18,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:25:18,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:25:18,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:25:18,707 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 04:25:19,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:25:19,012 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:25:19,016 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:25:19,017 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:25:19,018 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:25:19,018 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2020-08-22 04:25:19,078 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cd903eeb/2f0a37f1555142baa9490ca1340fd5e4/FLAG1c109342c [2020-08-22 04:25:19,601 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:25:19,601 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2020-08-22 04:25:19,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cd903eeb/2f0a37f1555142baa9490ca1340fd5e4/FLAG1c109342c [2020-08-22 04:25:19,925 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cd903eeb/2f0a37f1555142baa9490ca1340fd5e4 [2020-08-22 04:25:19,934 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:25:19,935 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:25:19,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:25:19,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:25:19,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:25:19,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:25:19" (1/1) ... [2020-08-22 04:25:19,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157ca41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:25:19, skipping insertion in model container [2020-08-22 04:25:19,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:25:19" (1/1) ... [2020-08-22 04:25:19,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:25:19,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:25:20,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:25:20,461 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:25:20,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:25:20,595 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:25:20,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:25:20 WrapperNode [2020-08-22 04:25:20,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:25:20,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:25:20,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:25:20,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:25:20,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:25:20" (1/1) ... [2020-08-22 04:25:20,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:25:20" (1/1) ... [2020-08-22 04:25:20,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:25:20" (1/1) ... [2020-08-22 04:25:20,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:25:20" (1/1) ... [2020-08-22 04:25:20,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:25:20" (1/1) ... [2020-08-22 04:25:20,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:25:20" (1/1) ... [2020-08-22 04:25:20,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:25:20" (1/1) ... [2020-08-22 04:25:20,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:25:20,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:25:20,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:25:20,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:25:20,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:25:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:25:20,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:25:20,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:25:20,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 04:25:20,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 04:25:20,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 04:25:20,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 04:25:20,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 04:25:20,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 04:25:20,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 04:25:20,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 04:25:20,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 04:25:20,758 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 04:25:20,758 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 04:25:20,758 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 04:25:20,758 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 04:25:20,759 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 04:25:20,759 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 04:25:20,759 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 04:25:20,759 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 04:25:20,759 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 04:25:20,759 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 04:25:20,759 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 04:25:20,760 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 04:25:20,760 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 04:25:20,760 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 04:25:20,760 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 04:25:20,760 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 04:25:20,760 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 04:25:20,761 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 04:25:20,761 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 04:25:20,761 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 04:25:20,761 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 04:25:20,761 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 04:25:20,761 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 04:25:20,761 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 04:25:20,762 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 04:25:20,762 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 04:25:20,762 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 04:25:20,762 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:25:20,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:25:20,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:25:20,763 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 04:25:20,763 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 04:25:20,763 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 04:25:20,763 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 04:25:20,763 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 04:25:20,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 04:25:20,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 04:25:20,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:25:20,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 04:25:20,764 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 04:25:20,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:25:20,764 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 04:25:20,764 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 04:25:20,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:25:20,765 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 04:25:20,765 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 04:25:20,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:25:20,765 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 04:25:20,765 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 04:25:20,766 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 04:25:20,766 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 04:25:20,766 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 04:25:20,766 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 04:25:20,766 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 04:25:20,766 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 04:25:20,766 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 04:25:20,767 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 04:25:20,767 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 04:25:20,767 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 04:25:20,767 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 04:25:20,767 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 04:25:20,767 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 04:25:20,768 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 04:25:20,768 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 04:25:20,768 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 04:25:20,768 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 04:25:20,768 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 04:25:20,768 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 04:25:20,769 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 04:25:20,769 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 04:25:20,769 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 04:25:20,769 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 04:25:20,769 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 04:25:20,769 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 04:25:20,769 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 04:25:20,770 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 04:25:20,770 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 04:25:20,770 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:25:20,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:25:20,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 04:25:20,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:25:21,828 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:25:21,828 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 04:25:21,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:25:21 BoogieIcfgContainer [2020-08-22 04:25:21,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:25:21,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:25:21,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:25:21,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:25:21,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:25:19" (1/3) ... [2020-08-22 04:25:21,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac42592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:25:21, skipping insertion in model container [2020-08-22 04:25:21,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:25:20" (2/3) ... [2020-08-22 04:25:21,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac42592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:25:21, skipping insertion in model container [2020-08-22 04:25:21,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:25:21" (3/3) ... [2020-08-22 04:25:21,842 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product39.cil.c [2020-08-22 04:25:21,852 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:25:21,860 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:25:21,878 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:25:21,910 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:25:21,910 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:25:21,910 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:25:21,911 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:25:21,912 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:25:21,912 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:25:21,912 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:25:21,912 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:25:21,947 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2020-08-22 04:25:21,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 04:25:21,957 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:25:21,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:25:21,959 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:25:21,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:25:21,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1081228888, now seen corresponding path program 1 times [2020-08-22 04:25:21,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:25:21,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371243599] [2020-08-22 04:25:21,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:25:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:22,655 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:25:22,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:25:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:22,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:25:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:22,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:25:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:22,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:25:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:22,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:25:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:22,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:25:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:22,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:25:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:22,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:25:22,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371243599] [2020-08-22 04:25:22,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:25:22,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 04:25:22,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937476682] [2020-08-22 04:25:22,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 04:25:22,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:25:22,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 04:25:22,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 04:25:22,770 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 3 states. [2020-08-22 04:25:23,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:25:23,900 INFO L93 Difference]: Finished difference Result 301 states and 397 transitions. [2020-08-22 04:25:23,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 04:25:23,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 04:25:23,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:25:23,924 INFO L225 Difference]: With dead ends: 301 [2020-08-22 04:25:23,925 INFO L226 Difference]: Without dead ends: 163 [2020-08-22 04:25:23,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 04:25:23,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-08-22 04:25:24,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 129. [2020-08-22 04:25:24,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-22 04:25:24,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 153 transitions. [2020-08-22 04:25:24,029 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 153 transitions. Word has length 46 [2020-08-22 04:25:24,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:25:24,029 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 153 transitions. [2020-08-22 04:25:24,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 04:25:24,030 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 153 transitions. [2020-08-22 04:25:24,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 04:25:24,036 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:25:24,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:25:24,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:25:24,037 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:25:24,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:25:24,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1618039840, now seen corresponding path program 1 times [2020-08-22 04:25:24,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:25:24,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126242026] [2020-08-22 04:25:24,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:25:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:24,448 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:25:24,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:25:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:24,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:25:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:24,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:25:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:24,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:25:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:24,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:25:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:24,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:25:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:24,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 04:25:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:24,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:25:24,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126242026] [2020-08-22 04:25:24,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:25:24,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:25:24,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812348218] [2020-08-22 04:25:24,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:25:24,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:25:24,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:25:24,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:25:24,500 INFO L87 Difference]: Start difference. First operand 129 states and 153 transitions. Second operand 4 states. [2020-08-22 04:25:24,914 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:25:25,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:25:25,792 INFO L93 Difference]: Finished difference Result 228 states and 280 transitions. [2020-08-22 04:25:25,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:25:25,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 04:25:25,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:25:25,796 INFO L225 Difference]: With dead ends: 228 [2020-08-22 04:25:25,797 INFO L226 Difference]: Without dead ends: 147 [2020-08-22 04:25:25,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:25:25,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-22 04:25:25,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 120. [2020-08-22 04:25:25,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-22 04:25:25,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2020-08-22 04:25:25,856 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 141 transitions. Word has length 47 [2020-08-22 04:25:25,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:25:25,857 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 141 transitions. [2020-08-22 04:25:25,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:25:25,857 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 141 transitions. [2020-08-22 04:25:25,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 04:25:25,859 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:25:25,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:25:25,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:25:25,860 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:25:25,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:25:25,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1339561462, now seen corresponding path program 1 times [2020-08-22 04:25:25,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:25:25,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430625561] [2020-08-22 04:25:25,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:25:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:26,164 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:25:26,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:25:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:26,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:25:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:26,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:25:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:26,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:25:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:26,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:25:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:26,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:25:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:26,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 04:25:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:26,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:25:26,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430625561] [2020-08-22 04:25:26,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:25:26,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:25:26,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312635964] [2020-08-22 04:25:26,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:25:26,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:25:26,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:25:26,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:25:26,285 INFO L87 Difference]: Start difference. First operand 120 states and 141 transitions. Second operand 8 states. [2020-08-22 04:25:26,649 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:25:26,969 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:25:27,221 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:25:27,462 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:25:28,216 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:25:29,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:25:29,916 INFO L93 Difference]: Finished difference Result 412 states and 515 transitions. [2020-08-22 04:25:29,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 04:25:29,917 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 04:25:29,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:25:29,922 INFO L225 Difference]: With dead ends: 412 [2020-08-22 04:25:29,922 INFO L226 Difference]: Without dead ends: 316 [2020-08-22 04:25:29,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 04:25:29,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-08-22 04:25:30,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 258. [2020-08-22 04:25:30,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-08-22 04:25:30,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 314 transitions. [2020-08-22 04:25:30,019 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 314 transitions. Word has length 51 [2020-08-22 04:25:30,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:25:30,020 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 314 transitions. [2020-08-22 04:25:30,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:25:30,020 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 314 transitions. [2020-08-22 04:25:30,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 04:25:30,023 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:25:30,023 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] [2020-08-22 04:25:30,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:25:30,024 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:25:30,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:25:30,024 INFO L82 PathProgramCache]: Analyzing trace with hash 857479477, now seen corresponding path program 1 times [2020-08-22 04:25:30,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:25:30,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707094303] [2020-08-22 04:25:30,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:25:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:30,300 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:25:30,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:25:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:30,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:25:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:30,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:25:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:30,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:25:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:30,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:25:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:30,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:25:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:30,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 04:25:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:30,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:25:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:30,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:25:30,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707094303] [2020-08-22 04:25:30,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:25:30,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:25:30,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124194446] [2020-08-22 04:25:30,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:25:30,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:25:30,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:25:30,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:25:30,393 INFO L87 Difference]: Start difference. First operand 258 states and 314 transitions. Second operand 8 states. [2020-08-22 04:25:30,858 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:25:31,778 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:25:32,132 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:25:32,445 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:25:32,760 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:25:33,150 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:25:34,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:25:34,064 INFO L93 Difference]: Finished difference Result 832 states and 1087 transitions. [2020-08-22 04:25:34,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 04:25:34,066 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-22 04:25:34,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:25:34,073 INFO L225 Difference]: With dead ends: 832 [2020-08-22 04:25:34,074 INFO L226 Difference]: Without dead ends: 598 [2020-08-22 04:25:34,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-22 04:25:34,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-08-22 04:25:34,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 471. [2020-08-22 04:25:34,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-08-22 04:25:34,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 578 transitions. [2020-08-22 04:25:34,183 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 578 transitions. Word has length 57 [2020-08-22 04:25:34,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:25:34,183 INFO L479 AbstractCegarLoop]: Abstraction has 471 states and 578 transitions. [2020-08-22 04:25:34,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:25:34,184 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 578 transitions. [2020-08-22 04:25:34,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 04:25:34,187 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:25:34,187 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] [2020-08-22 04:25:34,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:25:34,188 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:25:34,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:25:34,188 INFO L82 PathProgramCache]: Analyzing trace with hash -690329863, now seen corresponding path program 1 times [2020-08-22 04:25:34,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:25:34,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971287441] [2020-08-22 04:25:34,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:25:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:34,481 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:25:34,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:25:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:34,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:25:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:34,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:25:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:34,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:25:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:34,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:25:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:34,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 04:25:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:34,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:25:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:34,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 04:25:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:34,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 04:25:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:34,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:25:34,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971287441] [2020-08-22 04:25:34,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:25:34,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:25:34,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040884593] [2020-08-22 04:25:34,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:25:34,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:25:34,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:25:34,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:25:34,597 INFO L87 Difference]: Start difference. First operand 471 states and 578 transitions. Second operand 9 states. [2020-08-22 04:25:35,117 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:25:36,108 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:25:36,403 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:25:36,668 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:25:37,311 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:25:37,605 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:25:38,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:25:38,591 INFO L93 Difference]: Finished difference Result 1331 states and 1800 transitions. [2020-08-22 04:25:38,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 04:25:38,591 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-22 04:25:38,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:25:38,599 INFO L225 Difference]: With dead ends: 1331 [2020-08-22 04:25:38,599 INFO L226 Difference]: Without dead ends: 884 [2020-08-22 04:25:38,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 04:25:38,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2020-08-22 04:25:38,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 703. [2020-08-22 04:25:38,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-22 04:25:38,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 871 transitions. [2020-08-22 04:25:38,774 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 871 transitions. Word has length 61 [2020-08-22 04:25:38,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:25:38,774 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 871 transitions. [2020-08-22 04:25:38,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:25:38,775 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 871 transitions. [2020-08-22 04:25:38,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 04:25:38,777 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:25:38,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:25:38,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:25:38,778 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:25:38,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:25:38,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1573489665, now seen corresponding path program 1 times [2020-08-22 04:25:38,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:25:38,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136164455] [2020-08-22 04:25:38,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:25:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:39,034 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:25:39,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:25:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:39,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:25:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:39,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:25:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:39,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:25:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:39,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:25:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:39,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 04:25:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:39,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 04:25:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:39,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:25:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:39,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:25:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:39,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:25:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:39,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:25:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:39,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 04:25:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:39,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 04:25:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:39,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:25:39,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136164455] [2020-08-22 04:25:39,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:25:39,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:25:39,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107627143] [2020-08-22 04:25:39,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:25:39,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:25:39,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:25:39,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:25:39,188 INFO L87 Difference]: Start difference. First operand 703 states and 871 transitions. Second operand 9 states. [2020-08-22 04:25:39,667 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:25:40,625 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:25:40,893 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:25:41,173 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:25:41,432 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:25:43,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:25:43,293 INFO L93 Difference]: Finished difference Result 2338 states and 3323 transitions. [2020-08-22 04:25:43,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 04:25:43,296 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-22 04:25:43,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:25:43,312 INFO L225 Difference]: With dead ends: 2338 [2020-08-22 04:25:43,312 INFO L226 Difference]: Without dead ends: 1659 [2020-08-22 04:25:43,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-22 04:25:43,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2020-08-22 04:25:43,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1259. [2020-08-22 04:25:43,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1259 states. [2020-08-22 04:25:43,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1546 transitions. [2020-08-22 04:25:43,555 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1546 transitions. Word has length 83 [2020-08-22 04:25:43,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:25:43,555 INFO L479 AbstractCegarLoop]: Abstraction has 1259 states and 1546 transitions. [2020-08-22 04:25:43,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:25:43,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1546 transitions. [2020-08-22 04:25:43,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 04:25:43,559 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:25:43,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:25:43,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:25:43,560 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:25:43,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:25:43,560 INFO L82 PathProgramCache]: Analyzing trace with hash 547997666, now seen corresponding path program 1 times [2020-08-22 04:25:43,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:25:43,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286284978] [2020-08-22 04:25:43,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:25:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:43,807 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:25:43,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:25:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:43,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:25:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:43,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:25:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:43,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:25:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:43,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:25:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:43,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 04:25:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:43,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 04:25:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:43,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:25:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:43,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:25:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:43,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:25:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:43,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:25:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:43,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 04:25:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:43,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 04:25:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:43,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:25:43,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286284978] [2020-08-22 04:25:43,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:25:43,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:25:43,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250776509] [2020-08-22 04:25:43,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:25:43,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:25:43,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:25:43,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:25:43,980 INFO L87 Difference]: Start difference. First operand 1259 states and 1546 transitions. Second operand 9 states. [2020-08-22 04:25:45,197 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:25:45,432 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:25:45,697 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:25:45,941 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:25:47,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:25:47,067 INFO L93 Difference]: Finished difference Result 2894 states and 3849 transitions. [2020-08-22 04:25:47,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 04:25:47,068 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-22 04:25:47,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:25:47,085 INFO L225 Difference]: With dead ends: 2894 [2020-08-22 04:25:47,085 INFO L226 Difference]: Without dead ends: 1659 [2020-08-22 04:25:47,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 04:25:47,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2020-08-22 04:25:47,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1299. [2020-08-22 04:25:47,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2020-08-22 04:25:47,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1586 transitions. [2020-08-22 04:25:47,441 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1586 transitions. Word has length 83 [2020-08-22 04:25:47,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:25:47,442 INFO L479 AbstractCegarLoop]: Abstraction has 1299 states and 1586 transitions. [2020-08-22 04:25:47,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:25:47,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1586 transitions. [2020-08-22 04:25:47,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 04:25:47,446 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:25:47,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:25:47,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 04:25:47,446 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:25:47,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:25:47,447 INFO L82 PathProgramCache]: Analyzing trace with hash 570629920, now seen corresponding path program 1 times [2020-08-22 04:25:47,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:25:47,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000923675] [2020-08-22 04:25:47,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:25:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:47,734 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:25:47,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:25:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:47,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:25:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:47,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:25:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:47,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:25:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:47,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:25:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:47,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 04:25:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:47,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 04:25:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:47,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:25:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:47,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:25:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:47,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:25:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:47,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:25:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:47,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 04:25:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:47,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 04:25:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:25:47,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:25:47,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000923675] [2020-08-22 04:25:47,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:25:47,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 04:25:47,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249100068] [2020-08-22 04:25:47,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 04:25:47,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:25:47,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 04:25:47,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 04:25:47,896 INFO L87 Difference]: Start difference. First operand 1299 states and 1586 transitions. Second operand 11 states. [2020-08-22 04:25:48,427 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:25:48,654 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:25:48,869 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:25:49,541 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:25:49,797 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:25:50,036 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:25:51,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:25:51,194 INFO L93 Difference]: Finished difference Result 2592 states and 3413 transitions. [2020-08-22 04:25:51,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 04:25:51,195 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-08-22 04:25:51,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:25:51,208 INFO L225 Difference]: With dead ends: 2592 [2020-08-22 04:25:51,209 INFO L226 Difference]: Without dead ends: 1317 [2020-08-22 04:25:51,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 04:25:51,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2020-08-22 04:25:51,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1073. [2020-08-22 04:25:51,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2020-08-22 04:25:51,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1282 transitions. [2020-08-22 04:25:51,480 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1282 transitions. Word has length 83 [2020-08-22 04:25:51,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:25:51,480 INFO L479 AbstractCegarLoop]: Abstraction has 1073 states and 1282 transitions. [2020-08-22 04:25:51,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 04:25:51,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1282 transitions. [2020-08-22 04:25:51,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-22 04:25:51,483 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:25:51,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:25:51,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 04:25:51,484 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:25:51,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:25:51,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1146127589, now seen corresponding path program 1 times [2020-08-22 04:25:51,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:25:51,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066083816] [2020-08-22 04:25:51,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:25:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 04:25:51,569 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 04:25:51,569 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 04:25:51,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 04:25:51,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:25:51 BoogieIcfgContainer [2020-08-22 04:25:51,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 04:25:51,623 INFO L168 Benchmark]: Toolchain (without parser) took 31687.89 ms. Allocated memory was 141.6 MB in the beginning and 658.5 MB in the end (delta: 516.9 MB). Free memory was 102.0 MB in the beginning and 174.5 MB in the end (delta: -72.5 MB). Peak memory consumption was 444.5 MB. Max. memory is 7.1 GB. [2020-08-22 04:25:51,627 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 04:25:51,629 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.88 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 101.8 MB in the beginning and 171.1 MB in the end (delta: -69.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-08-22 04:25:51,633 INFO L168 Benchmark]: Boogie Preprocessor took 96.21 ms. Allocated memory is still 204.5 MB. Free memory was 171.1 MB in the beginning and 166.7 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-22 04:25:51,634 INFO L168 Benchmark]: RCFGBuilder took 1140.18 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 166.7 MB in the beginning and 189.1 MB in the end (delta: -22.4 MB). Peak memory consumption was 78.5 MB. Max. memory is 7.1 GB. [2020-08-22 04:25:51,634 INFO L168 Benchmark]: TraceAbstraction took 29786.62 ms. Allocated memory was 234.4 MB in the beginning and 658.5 MB in the end (delta: 424.1 MB). Free memory was 189.1 MB in the beginning and 174.5 MB in the end (delta: 14.6 MB). Peak memory consumption was 438.7 MB. Max. memory is 7.1 GB. [2020-08-22 04:25:51,642 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 659.88 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 101.8 MB in the beginning and 171.1 MB in the end (delta: -69.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.21 ms. Allocated memory is still 204.5 MB. Free memory was 171.1 MB in the beginning and 166.7 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1140.18 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 166.7 MB in the beginning and 189.1 MB in the end (delta: -22.4 MB). Peak memory consumption was 78.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29786.62 ms. Allocated memory was 234.4 MB in the beginning and 658.5 MB in the end (delta: 424.1 MB). Free memory was 189.1 MB in the beginning and 174.5 MB in the end (delta: 14.6 MB). Peak memory consumption was 438.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 439]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L450] int waterLevel = 1; [L451] int methaneLevelCritical = 0; [L617] int pumpRunning = 0; [L618] int systemActive = 1; [L848] int cleanupTimeShifts = 4; [L921] int retValue_acc ; [L922] int tmp ; [L926] FCALL select_helpers() [L927] FCALL select_features() [L928] CALL, EXPR valid_product() [L839] int retValue_acc ; [L842] retValue_acc = 1 [L843] return (retValue_acc); [L928] RET, EXPR valid_product() [L928] tmp = valid_product() [L930] COND TRUE \read(tmp) [L932] FCALL setup() [L933] CALL runTest() [L915] CALL test() [L548] int splverifierCounter ; [L549] int tmp ; [L550] int tmp___0 ; [L551] int tmp___1 ; [L552] int tmp___2 ; [L555] splverifierCounter = 0 [L557] COND TRUE 1 [L559] COND TRUE splverifierCounter < 4 [L565] tmp = __VERIFIER_nondet_int() [L567] COND TRUE \read(tmp) [L569] CALL waterRise() [L468] COND TRUE waterLevel < 2 [L469] waterLevel = waterLevel + 1 [L569] RET waterRise() [L575] tmp___0 = __VERIFIER_nondet_int() [L577] COND TRUE \read(tmp___0) [L579] CALL changeMethaneLevel() [L480] COND FALSE !(\read(methaneLevelCritical)) [L483] methaneLevelCritical = 1 [L579] RET changeMethaneLevel() [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) [L602] CALL timeShift() [L624] COND FALSE !(\read(pumpRunning)) [L631] COND TRUE \read(systemActive) [L633] CALL processEnvironment() [L679] int tmp ; [L682] COND FALSE !(\read(pumpRunning)) [L697] CALL processEnvironment__wrappee__highWaterSensor() [L653] int tmp ; [L656] COND TRUE ! pumpRunning [L658] CALL, EXPR isHighWaterLevel() [L776] int retValue_acc ; [L777] int tmp ; [L778] int tmp___0 ; [L782] CALL, EXPR isHighWaterSensorDry() [L530] int retValue_acc ; [L533] COND FALSE !(waterLevel < 2) [L537] retValue_acc = 0 [L538] return (retValue_acc); [L782] RET, EXPR isHighWaterSensorDry() [L782] tmp = isHighWaterSensorDry() [L784] COND FALSE !(\read(tmp)) [L787] tmp___0 = 1 [L789] retValue_acc = tmp___0 [L790] return (retValue_acc); [L658] RET, EXPR isHighWaterLevel() [L658] tmp = isHighWaterLevel() [L660] COND TRUE \read(tmp) [L662] CALL activatePump() [L707] pumpRunning = 1 [L662] RET activatePump() [L697] RET processEnvironment__wrappee__highWaterSensor() [L633] RET processEnvironment() [L639] CALL __utac_acc__Specification1_spec__1() [L410] int tmp ; [L411] int tmp___0 ; [L415] CALL, EXPR isMethaneLevelCritical() [L489] int retValue_acc ; [L492] retValue_acc = methaneLevelCritical [L493] return (retValue_acc); [L415] RET, EXPR isMethaneLevelCritical() [L415] tmp = isMethaneLevelCritical() [L417] COND TRUE \read(tmp) [L419] CALL, EXPR isPumpRunning() [L731] int retValue_acc ; [L734] retValue_acc = pumpRunning [L735] return (retValue_acc); [L419] RET, EXPR isPumpRunning() [L419] tmp___0 = isPumpRunning() [L421] COND TRUE \read(tmp___0) [L423] CALL __automaton_fail() [L439] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 24.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 909 SDtfs, 1603 SDslu, 1177 SDs, 0 SdLazy, 5332 SolverSat, 1012 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 269 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1299occurred in iteration=7, 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, 8 MinimizatonAttempts, 1431 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 598 NumberOfCodeBlocks, 598 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 503 ConstructedInterpolants, 0 QuantifiedInterpolants, 147464 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...