/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:24:06,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:24:06,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:24:06,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:24:06,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:24:06,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:24:06,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:24:06,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:24:06,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:24:06,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:24:06,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:24:06,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:24:06,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:24:06,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:24:06,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:24:06,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:24:06,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:24:06,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:24:06,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:24:06,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:24:06,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:24:06,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:24:06,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:24:06,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:24:06,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:24:06,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:24:06,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:24:06,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:24:06,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:24:06,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:24:06,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:24:06,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:24:06,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:24:06,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:24:06,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:24:06,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:24:06,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:24:06,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:24:06,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:24:06,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:24:06,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:24:06,679 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 16:24:06,725 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:24:06,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:24:06,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:24:06,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:24:06,728 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:24:06,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:24:06,729 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:24:06,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:24:06,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:24:06,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:24:06,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:24:06,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:24:06,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:24:06,732 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:24:06,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:24:06,732 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:24:06,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:24:06,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:24:06,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:24:06,733 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:24:06,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:24:06,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:24:06,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:24:06,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:24:06,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:24:06,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:24:06,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:24:06,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:24:06,735 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:24:06,735 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:24:07,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:24:07,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:24:07,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:24:07,087 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:24:07,087 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:24:07,088 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product37.cil.c [2020-08-21 16:24:07,154 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d84626cdf/24de33b26a93434a9701596d56f23e7e/FLAG8338abcb6 [2020-08-21 16:24:07,764 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:24:07,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product37.cil.c [2020-08-21 16:24:07,778 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d84626cdf/24de33b26a93434a9701596d56f23e7e/FLAG8338abcb6 [2020-08-21 16:24:07,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d84626cdf/24de33b26a93434a9701596d56f23e7e [2020-08-21 16:24:08,000 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:24:08,002 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:24:08,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:24:08,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:24:08,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:24:08,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:24:07" (1/1) ... [2020-08-21 16:24:08,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53926226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:08, skipping insertion in model container [2020-08-21 16:24:08,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:24:07" (1/1) ... [2020-08-21 16:24:08,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:24:08,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:24:08,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:24:08,559 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:24:08,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:24:08,666 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:24:08,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:08 WrapperNode [2020-08-21 16:24:08,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:24:08,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:24:08,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:24:08,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:24:08,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:08" (1/1) ... [2020-08-21 16:24:08,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:08" (1/1) ... [2020-08-21 16:24:08,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:08" (1/1) ... [2020-08-21 16:24:08,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:08" (1/1) ... [2020-08-21 16:24:08,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:08" (1/1) ... [2020-08-21 16:24:08,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:08" (1/1) ... [2020-08-21 16:24:08,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:08" (1/1) ... [2020-08-21 16:24:08,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:24:08,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:24:08,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:24:08,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:24:08,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:24:08,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:24:08,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:24:08,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 16:24:08,836 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 16:24:08,836 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 16:24:08,836 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 16:24:08,836 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 16:24:08,836 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 16:24:08,837 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 16:24:08,837 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 16:24:08,837 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 16:24:08,837 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 16:24:08,837 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 16:24:08,837 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 16:24:08,838 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 16:24:08,838 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 16:24:08,838 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 16:24:08,838 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 16:24:08,838 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 16:24:08,838 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 16:24:08,839 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 16:24:08,839 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 16:24:08,839 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:24:08,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 16:24:08,839 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 16:24:08,839 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 16:24:08,839 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 16:24:08,840 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 16:24:08,840 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 16:24:08,840 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 16:24:08,840 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 16:24:08,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 16:24:08,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 16:24:08,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 16:24:08,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 16:24:08,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 16:24:08,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 16:24:08,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 16:24:08,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:24:08,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:24:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 16:24:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 16:24:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 16:24:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 16:24:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 16:24:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 16:24:08,843 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 16:24:08,843 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 16:24:08,843 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 16:24:08,843 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 16:24:08,843 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 16:24:08,843 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 16:24:08,843 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 16:24:08,844 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 16:24:08,844 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 16:24:08,844 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 16:24:08,844 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 16:24:08,844 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 16:24:08,844 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 16:24:08,845 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 16:24:08,845 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 16:24:08,845 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 16:24:08,845 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 16:24:08,845 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 16:24:08,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:24:08,845 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 16:24:08,846 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 16:24:08,846 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 16:24:08,846 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:24:08,846 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 16:24:08,846 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 16:24:08,846 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 16:24:08,846 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 16:24:08,847 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 16:24:08,847 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 16:24:08,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 16:24:08,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 16:24:08,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:24:08,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 16:24:08,848 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 16:24:08,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:24:08,848 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 16:24:08,848 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 16:24:08,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:24:08,848 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 16:24:08,848 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 16:24:08,849 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 16:24:08,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:24:08,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 16:24:08,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:24:10,088 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:24:10,088 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 16:24:10,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:24:10 BoogieIcfgContainer [2020-08-21 16:24:10,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:24:10,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:24:10,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:24:10,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:24:10,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:24:07" (1/3) ... [2020-08-21 16:24:10,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7455fa59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:24:10, skipping insertion in model container [2020-08-21 16:24:10,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:24:08" (2/3) ... [2020-08-21 16:24:10,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7455fa59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:24:10, skipping insertion in model container [2020-08-21 16:24:10,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:24:10" (3/3) ... [2020-08-21 16:24:10,108 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product37.cil.c [2020-08-21 16:24:10,119 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:24:10,129 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:24:10,142 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:24:10,162 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:24:10,162 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:24:10,163 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:24:10,163 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:24:10,163 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:24:10,163 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:24:10,163 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:24:10,163 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:24:10,186 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-21 16:24:10,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 16:24:10,196 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:10,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:24:10,198 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:10,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:10,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1144967718, now seen corresponding path program 1 times [2020-08-21 16:24:10,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:10,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346991078] [2020-08-21 16:24:10,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:10,882 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:10,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:10,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:10,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:10,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:10,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:10,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:24:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:10,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:24:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:10,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:24:10,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346991078] [2020-08-21 16:24:10,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:24:10,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 16:24:11,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364099051] [2020-08-21 16:24:11,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 16:24:11,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:11,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 16:24:11,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 16:24:11,028 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 3 states. [2020-08-21 16:24:12,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:24:12,190 INFO L93 Difference]: Finished difference Result 293 states and 382 transitions. [2020-08-21 16:24:12,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 16:24:12,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 16:24:12,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:24:12,207 INFO L225 Difference]: With dead ends: 293 [2020-08-21 16:24:12,207 INFO L226 Difference]: Without dead ends: 158 [2020-08-21 16:24:12,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 16:24:12,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-21 16:24:12,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 126. [2020-08-21 16:24:12,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-21 16:24:12,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2020-08-21 16:24:12,302 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 46 [2020-08-21 16:24:12,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:24:12,303 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2020-08-21 16:24:12,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 16:24:12,303 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2020-08-21 16:24:12,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 16:24:12,307 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:12,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:24:12,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:24:12,308 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:12,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:12,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1860542733, now seen corresponding path program 1 times [2020-08-21 16:24:12,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:12,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639582364] [2020-08-21 16:24:12,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:12,706 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:12,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:12,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:12,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:12,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:12,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:12,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 16:24:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:12,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 16:24:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:12,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:24:12,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639582364] [2020-08-21 16:24:12,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:24:12,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 16:24:12,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179164132] [2020-08-21 16:24:12,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 16:24:12,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:12,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 16:24:12,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:24:12,775 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand 4 states. [2020-08-21 16:24:13,222 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:13,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:24:13,949 INFO L93 Difference]: Finished difference Result 226 states and 273 transitions. [2020-08-21 16:24:13,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:24:13,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 16:24:13,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:24:13,953 INFO L225 Difference]: With dead ends: 226 [2020-08-21 16:24:13,953 INFO L226 Difference]: Without dead ends: 142 [2020-08-21 16:24:13,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:24:13,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-08-21 16:24:14,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 117. [2020-08-21 16:24:14,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-21 16:24:14,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2020-08-21 16:24:14,005 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 47 [2020-08-21 16:24:14,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:24:14,005 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2020-08-21 16:24:14,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 16:24:14,006 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2020-08-21 16:24:14,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 16:24:14,015 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:14,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:24:14,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:24:14,016 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:14,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:14,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1943742618, now seen corresponding path program 1 times [2020-08-21 16:24:14,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:14,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553705684] [2020-08-21 16:24:14,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:14,360 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:14,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:14,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:14,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:14,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:14,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:14,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:24:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:14,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:24:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:24:14,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553705684] [2020-08-21 16:24:14,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:24:14,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 16:24:14,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691359368] [2020-08-21 16:24:14,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 16:24:14,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:14,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 16:24:14,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:24:14,455 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 8 states. [2020-08-21 16:24:14,833 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:24:15,145 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:15,385 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:15,610 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:16,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:24:16,671 INFO L93 Difference]: Finished difference Result 235 states and 287 transitions. [2020-08-21 16:24:16,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 16:24:16,672 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 16:24:16,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:24:16,674 INFO L225 Difference]: With dead ends: 235 [2020-08-21 16:24:16,675 INFO L226 Difference]: Without dead ends: 142 [2020-08-21 16:24:16,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:24:16,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-08-21 16:24:16,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 117. [2020-08-21 16:24:16,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-21 16:24:16,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 134 transitions. [2020-08-21 16:24:16,717 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 134 transitions. Word has length 51 [2020-08-21 16:24:16,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:24:16,718 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 134 transitions. [2020-08-21 16:24:16,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 16:24:16,718 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 134 transitions. [2020-08-21 16:24:16,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 16:24:16,719 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:16,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:24:16,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:24:16,720 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:16,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:16,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1699182139, now seen corresponding path program 1 times [2020-08-21 16:24:16,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:16,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778769689] [2020-08-21 16:24:16,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:17,010 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:17,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:17,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:17,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:17,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:17,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:17,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 16:24:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:17,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:17,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:17,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 16:24:17,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:17,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 16:24:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:17,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:24:17,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778769689] [2020-08-21 16:24:17,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:24:17,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 16:24:17,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869980104] [2020-08-21 16:24:17,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 16:24:17,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:17,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 16:24:17,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:24:17,096 INFO L87 Difference]: Start difference. First operand 117 states and 134 transitions. Second operand 6 states. [2020-08-21 16:24:17,426 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:24:18,542 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:19,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:24:19,203 INFO L93 Difference]: Finished difference Result 327 states and 403 transitions. [2020-08-21 16:24:19,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 16:24:19,203 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-21 16:24:19,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:24:19,210 INFO L225 Difference]: With dead ends: 327 [2020-08-21 16:24:19,213 INFO L226 Difference]: Without dead ends: 234 [2020-08-21 16:24:19,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 16:24:19,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-08-21 16:24:19,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 193. [2020-08-21 16:24:19,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-08-21 16:24:19,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 219 transitions. [2020-08-21 16:24:19,270 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 219 transitions. Word has length 64 [2020-08-21 16:24:19,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:24:19,271 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 219 transitions. [2020-08-21 16:24:19,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 16:24:19,271 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 219 transitions. [2020-08-21 16:24:19,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 16:24:19,272 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:19,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:24:19,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:24:19,273 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:19,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:19,273 INFO L82 PathProgramCache]: Analyzing trace with hash 906371281, now seen corresponding path program 1 times [2020-08-21 16:24:19,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:19,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437408939] [2020-08-21 16:24:19,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:19,590 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:19,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:19,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:19,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:19,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:19,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:19,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 16:24:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:19,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:19,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:19,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:19,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:24:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:19,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 16:24:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:19,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 16:24:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:19,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:24:19,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437408939] [2020-08-21 16:24:19,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:24:19,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 16:24:19,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585061792] [2020-08-21 16:24:19,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:24:19,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:19,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:24:19,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:24:19,758 INFO L87 Difference]: Start difference. First operand 193 states and 219 transitions. Second operand 12 states. [2020-08-21 16:24:20,230 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:24:20,549 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:20,798 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:21,025 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:21,524 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:22,416 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:22,699 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:24:22,947 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:24:23,226 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:24:23,497 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:24:23,756 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:24:25,079 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:24:25,407 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:26,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:24:26,001 INFO L93 Difference]: Finished difference Result 671 states and 870 transitions. [2020-08-21 16:24:26,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 16:24:26,006 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2020-08-21 16:24:26,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:24:26,011 INFO L225 Difference]: With dead ends: 671 [2020-08-21 16:24:26,011 INFO L226 Difference]: Without dead ends: 502 [2020-08-21 16:24:26,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 16:24:26,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-08-21 16:24:26,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 444. [2020-08-21 16:24:26,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-08-21 16:24:26,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 523 transitions. [2020-08-21 16:24:26,132 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 523 transitions. Word has length 78 [2020-08-21 16:24:26,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:24:26,133 INFO L479 AbstractCegarLoop]: Abstraction has 444 states and 523 transitions. [2020-08-21 16:24:26,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:24:26,133 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 523 transitions. [2020-08-21 16:24:26,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-21 16:24:26,136 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:26,136 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:24:26,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 16:24:26,137 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:26,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:26,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1573115002, now seen corresponding path program 1 times [2020-08-21 16:24:26,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:26,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052806509] [2020-08-21 16:24:26,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,405 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:26,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:24:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 16:24:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:26,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:24:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:24:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 16:24:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 16:24:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:24:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 16:24:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 16:24:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:26,668 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 16:24:26,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052806509] [2020-08-21 16:24:26,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:24:26,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 16:24:26,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969205297] [2020-08-21 16:24:26,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 16:24:26,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:26,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 16:24:26,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 16:24:26,672 INFO L87 Difference]: Start difference. First operand 444 states and 523 transitions. Second operand 13 states. [2020-08-21 16:24:27,124 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:24:27,738 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:24:28,239 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:24:28,503 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 16:24:28,768 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:24:29,011 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:24:29,248 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:24:29,495 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 16:24:29,772 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:24:30,037 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:24:31,485 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:31,717 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:24:31,944 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:32,183 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:32,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:24:32,590 INFO L93 Difference]: Finished difference Result 898 states and 1145 transitions. [2020-08-21 16:24:32,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 16:24:32,591 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-08-21 16:24:32,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:24:32,595 INFO L225 Difference]: With dead ends: 898 [2020-08-21 16:24:32,596 INFO L226 Difference]: Without dead ends: 478 [2020-08-21 16:24:32,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 16:24:32,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-08-21 16:24:32,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 416. [2020-08-21 16:24:32,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-21 16:24:32,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 494 transitions. [2020-08-21 16:24:32,674 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 494 transitions. Word has length 130 [2020-08-21 16:24:32,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:24:32,675 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 494 transitions. [2020-08-21 16:24:32,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 16:24:32,675 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 494 transitions. [2020-08-21 16:24:32,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-08-21 16:24:32,677 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:32,677 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:24:32,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 16:24:32,678 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:32,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:32,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1101814222, now seen corresponding path program 1 times [2020-08-21 16:24:32,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:32,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008987228] [2020-08-21 16:24:32,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:32,927 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:32,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:32,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:32,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:32,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:32,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:32,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:24:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:33,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:33,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:33,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:33,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:33,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:24:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:33,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:24:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:33,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:33,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 16:24:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:33,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 16:24:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:33,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:33,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:33,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:24:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:33,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 16:24:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:33,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 16:24:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:33,154 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 16:24:33,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008987228] [2020-08-21 16:24:33,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:24:33,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 16:24:33,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019293254] [2020-08-21 16:24:33,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:24:33,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:33,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:24:33,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:24:33,158 INFO L87 Difference]: Start difference. First operand 416 states and 494 transitions. Second operand 12 states. [2020-08-21 16:24:33,937 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:34,162 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:34,376 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:34,945 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:35,173 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:35,388 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:36,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:24:36,357 INFO L93 Difference]: Finished difference Result 757 states and 931 transitions. [2020-08-21 16:24:36,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 16:24:36,358 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 126 [2020-08-21 16:24:36,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:24:36,361 INFO L225 Difference]: With dead ends: 757 [2020-08-21 16:24:36,361 INFO L226 Difference]: Without dead ends: 365 [2020-08-21 16:24:36,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 16:24:36,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-08-21 16:24:36,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 341. [2020-08-21 16:24:36,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-08-21 16:24:36,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 402 transitions. [2020-08-21 16:24:36,423 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 402 transitions. Word has length 126 [2020-08-21 16:24:36,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:24:36,423 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 402 transitions. [2020-08-21 16:24:36,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:24:36,424 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 402 transitions. [2020-08-21 16:24:36,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-21 16:24:36,425 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:36,426 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:24:36,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 16:24:36,426 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:36,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:36,426 INFO L82 PathProgramCache]: Analyzing trace with hash -2074968439, now seen corresponding path program 1 times [2020-08-21 16:24:36,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:36,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020336466] [2020-08-21 16:24:36,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:36,706 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:36,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:36,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:36,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:36,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:36,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:36,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:24:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:36,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 16:24:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:36,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:36,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:36,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:36,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:36,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:24:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:36,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:24:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:36,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:36,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 16:24:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:36,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 16:24:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:36,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:36,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:36,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:24:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:36,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 16:24:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:36,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 16:24:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:36,918 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-21 16:24:36,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020336466] [2020-08-21 16:24:36,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:24:36,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 16:24:36,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911605083] [2020-08-21 16:24:36,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 16:24:36,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:36,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 16:24:36,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 16:24:36,921 INFO L87 Difference]: Start difference. First operand 341 states and 402 transitions. Second operand 13 states. [2020-08-21 16:24:37,364 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:24:38,055 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:39,773 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:40,054 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:40,305 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:40,561 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:24:40,826 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:41,086 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:24:41,336 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:41,591 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:24:41,864 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:24:42,107 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:24:42,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:24:42,701 INFO L93 Difference]: Finished difference Result 954 states and 1168 transitions. [2020-08-21 16:24:42,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 16:24:42,702 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-08-21 16:24:42,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:24:42,707 INFO L225 Difference]: With dead ends: 954 [2020-08-21 16:24:42,707 INFO L226 Difference]: Without dead ends: 637 [2020-08-21 16:24:42,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=207, Invalid=785, Unknown=0, NotChecked=0, Total=992 [2020-08-21 16:24:42,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2020-08-21 16:24:42,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 598. [2020-08-21 16:24:42,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-08-21 16:24:42,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 696 transitions. [2020-08-21 16:24:42,873 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 696 transitions. Word has length 130 [2020-08-21 16:24:42,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:24:42,874 INFO L479 AbstractCegarLoop]: Abstraction has 598 states and 696 transitions. [2020-08-21 16:24:42,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 16:24:42,874 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 696 transitions. [2020-08-21 16:24:42,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-21 16:24:42,879 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:42,879 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:24:42,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 16:24:42,880 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:42,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:42,880 INFO L82 PathProgramCache]: Analyzing trace with hash 106896037, now seen corresponding path program 1 times [2020-08-21 16:24:42,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:42,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121644739] [2020-08-21 16:24:42,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:43,191 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:43,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:43,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:43,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:43,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:43,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:43,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:24:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:43,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 16:24:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:43,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 16:24:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:43,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:43,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:43,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:43,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:43,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:24:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:43,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:24:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:43,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:43,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 16:24:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:43,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 16:24:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:43,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:43,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:43,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:24:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:43,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 16:24:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:43,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-21 16:24:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:43,340 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-21 16:24:43,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121644739] [2020-08-21 16:24:43,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:24:43,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 16:24:43,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343788628] [2020-08-21 16:24:43,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 16:24:43,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:43,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 16:24:43,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-21 16:24:43,346 INFO L87 Difference]: Start difference. First operand 598 states and 696 transitions. Second operand 11 states. [2020-08-21 16:24:43,828 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:24:45,364 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:45,600 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:24:45,868 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:46,112 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:46,351 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:46,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:24:46,647 INFO L93 Difference]: Finished difference Result 703 states and 873 transitions. [2020-08-21 16:24:46,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 16:24:46,647 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 134 [2020-08-21 16:24:46,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:24:46,652 INFO L225 Difference]: With dead ends: 703 [2020-08-21 16:24:46,652 INFO L226 Difference]: Without dead ends: 700 [2020-08-21 16:24:46,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2020-08-21 16:24:46,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-08-21 16:24:46,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 598. [2020-08-21 16:24:46,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-08-21 16:24:46,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 694 transitions. [2020-08-21 16:24:46,782 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 694 transitions. Word has length 134 [2020-08-21 16:24:46,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:24:46,784 INFO L479 AbstractCegarLoop]: Abstraction has 598 states and 694 transitions. [2020-08-21 16:24:46,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 16:24:46,785 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 694 transitions. [2020-08-21 16:24:46,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-21 16:24:46,788 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:46,789 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:24:46,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 16:24:46,789 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:46,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:46,790 INFO L82 PathProgramCache]: Analyzing trace with hash -355706806, now seen corresponding path program 1 times [2020-08-21 16:24:46,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:46,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657704349] [2020-08-21 16:24:46,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:47,114 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:24:47,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:24:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:47,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:24:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:47,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:24:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:47,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:24:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:47,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:24:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:47,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 16:24:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:47,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 16:24:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:47,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:47,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:47,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:47,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:47,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:24:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:47,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 16:24:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:47,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:47,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 16:24:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:47,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 16:24:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:47,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:47,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:24:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:47,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:24:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:47,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:24:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:47,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 16:24:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:47,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-21 16:24:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:24:47,362 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 16:24:47,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657704349] [2020-08-21 16:24:47,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:24:47,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 16:24:47,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14658611] [2020-08-21 16:24:47,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:24:47,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:24:47,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:24:47,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:24:47,374 INFO L87 Difference]: Start difference. First operand 598 states and 694 transitions. Second operand 12 states. [2020-08-21 16:24:48,123 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:24:49,061 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:24:49,603 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:24:49,874 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:24:50,120 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:24:50,360 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:50,611 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:24:50,861 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:24:52,285 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:24:52,524 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:24:53,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:24:53,095 INFO L93 Difference]: Finished difference Result 1409 states and 1754 transitions. [2020-08-21 16:24:53,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 16:24:53,096 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 134 [2020-08-21 16:24:53,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:24:53,103 INFO L225 Difference]: With dead ends: 1409 [2020-08-21 16:24:53,104 INFO L226 Difference]: Without dead ends: 953 [2020-08-21 16:24:53,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-21 16:24:53,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2020-08-21 16:24:53,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 811. [2020-08-21 16:24:53,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2020-08-21 16:24:53,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 956 transitions. [2020-08-21 16:24:53,256 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 956 transitions. Word has length 134 [2020-08-21 16:24:53,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:24:53,256 INFO L479 AbstractCegarLoop]: Abstraction has 811 states and 956 transitions. [2020-08-21 16:24:53,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:24:53,257 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 956 transitions. [2020-08-21 16:24:53,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-08-21 16:24:53,263 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:24:53,263 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:24:53,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 16:24:53,264 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:24:53,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:24:53,264 INFO L82 PathProgramCache]: Analyzing trace with hash -775865217, now seen corresponding path program 2 times [2020-08-21 16:24:53,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:24:53,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313959572] [2020-08-21 16:24:53,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:24:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 16:24:53,341 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 16:24:53,342 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 16:24:53,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 16:24:53,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:24:53 BoogieIcfgContainer [2020-08-21 16:24:53,396 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 16:24:53,398 INFO L168 Benchmark]: Toolchain (without parser) took 45396.06 ms. Allocated memory was 143.7 MB in the beginning and 631.8 MB in the end (delta: 488.1 MB). Free memory was 104.6 MB in the beginning and 405.5 MB in the end (delta: -301.0 MB). Peak memory consumption was 187.2 MB. Max. memory is 7.1 GB. [2020-08-21 16:24:53,398 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 143.7 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 16:24:53,399 INFO L168 Benchmark]: CACSL2BoogieTranslator took 664.36 ms. Allocated memory was 143.7 MB in the beginning and 205.5 MB in the end (delta: 61.9 MB). Free memory was 104.4 MB in the beginning and 174.7 MB in the end (delta: -70.4 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-08-21 16:24:53,400 INFO L168 Benchmark]: Boogie Preprocessor took 91.20 ms. Allocated memory is still 205.5 MB. Free memory was 174.7 MB in the beginning and 169.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-08-21 16:24:53,400 INFO L168 Benchmark]: RCFGBuilder took 1338.83 ms. Allocated memory was 205.5 MB in the beginning and 232.3 MB in the end (delta: 26.7 MB). Free memory was 169.8 MB in the beginning and 188.0 MB in the end (delta: -18.2 MB). Peak memory consumption was 76.3 MB. Max. memory is 7.1 GB. [2020-08-21 16:24:53,401 INFO L168 Benchmark]: TraceAbstraction took 43296.06 ms. Allocated memory was 232.3 MB in the beginning and 631.8 MB in the end (delta: 399.5 MB). Free memory was 188.0 MB in the beginning and 405.5 MB in the end (delta: -217.5 MB). Peak memory consumption was 182.0 MB. Max. memory is 7.1 GB. [2020-08-21 16:24:53,404 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 143.7 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 664.36 ms. Allocated memory was 143.7 MB in the beginning and 205.5 MB in the end (delta: 61.9 MB). Free memory was 104.4 MB in the beginning and 174.7 MB in the end (delta: -70.4 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.20 ms. Allocated memory is still 205.5 MB. Free memory was 174.7 MB in the beginning and 169.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1338.83 ms. Allocated memory was 205.5 MB in the beginning and 232.3 MB in the end (delta: 26.7 MB). Free memory was 169.8 MB in the beginning and 188.0 MB in the end (delta: -18.2 MB). Peak memory consumption was 76.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 43296.06 ms. Allocated memory was 232.3 MB in the beginning and 631.8 MB in the end (delta: 399.5 MB). Free memory was 188.0 MB in the beginning and 405.5 MB in the end (delta: -217.5 MB). Peak memory consumption was 182.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 434]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L155] int pumpRunning = 0; [L156] int systemActive = 1; [L334] int cleanupTimeShifts = 4; [L440] int waterLevel = 1; [L441] int methaneLevelCritical = 0; [L703] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L407] int retValue_acc ; [L408] int tmp ; [L412] FCALL select_helpers() [L413] FCALL select_features() [L414] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L414] RET, EXPR valid_product() [L414] tmp = valid_product() [L416] COND TRUE \read(tmp) [L418] FCALL setup() [L419] CALL runTest() [L401] CALL test() [L83] int splverifierCounter ; [L84] int tmp ; [L85] int tmp___0 ; [L86] int tmp___1 ; [L87] int tmp___2 ; [L90] splverifierCounter = 0 [L92] COND TRUE 1 [L94] COND TRUE splverifierCounter < 4 [L100] tmp = __VERIFIER_nondet_int() [L102] COND TRUE \read(tmp) [L104] CALL waterRise() [L458] COND TRUE waterLevel < 2 [L459] waterLevel = waterLevel + 1 [L104] RET waterRise() [L110] tmp___0 = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp___0)) [L120] tmp___2 = __VERIFIER_nondet_int() [L122] COND TRUE \read(tmp___2) [L135] CALL timeShift() [L163] COND FALSE !(\read(pumpRunning)) [L170] COND TRUE \read(systemActive) [L172] CALL processEnvironment() [L218] int tmp ; [L221] COND FALSE !(\read(pumpRunning)) [L236] CALL processEnvironment__wrappee__highWaterSensor() [L192] int tmp ; [L195] COND TRUE ! pumpRunning [L197] CALL, EXPR isHighWaterLevel() [L315] int retValue_acc ; [L316] int tmp ; [L317] int tmp___0 ; [L321] CALL, EXPR isHighWaterSensorDry() [L520] int retValue_acc ; [L523] COND FALSE !(waterLevel < 2) [L527] retValue_acc = 0 [L528] return (retValue_acc); [L321] RET, EXPR isHighWaterSensorDry() [L321] tmp = isHighWaterSensorDry() [L323] COND FALSE !(\read(tmp)) [L326] tmp___0 = 1 [L328] retValue_acc = tmp___0 [L329] return (retValue_acc); [L197] RET, EXPR isHighWaterLevel() [L197] tmp = isHighWaterLevel() [L199] COND TRUE \read(tmp) [L201] CALL activatePump() [L246] pumpRunning = 1 [L201] RET activatePump() [L236] RET processEnvironment__wrappee__highWaterSensor() [L172] RET processEnvironment() [L178] CALL __utac_acc__Specification4_spec__1() [L901] int tmp ; [L902] int tmp___0 ; [L906] CALL, EXPR getWaterLevel() [L511] int retValue_acc ; [L514] retValue_acc = waterLevel [L515] return (retValue_acc); [L906] RET, EXPR getWaterLevel() [L906] tmp = getWaterLevel() [L908] COND FALSE !(tmp == 0) [L178] RET __utac_acc__Specification4_spec__1() [L135] RET timeShift() [L92] COND TRUE 1 [L94] COND TRUE splverifierCounter < 4 [L100] tmp = __VERIFIER_nondet_int() [L102] COND FALSE !(\read(tmp)) [L110] tmp___0 = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp___0)) [L120] tmp___2 = __VERIFIER_nondet_int() [L122] COND TRUE \read(tmp___2) [L135] CALL timeShift() [L163] COND TRUE \read(pumpRunning) [L165] CALL lowerWaterLevel() [L446] COND TRUE waterLevel > 0 [L447] waterLevel = waterLevel - 1 [L165] RET lowerWaterLevel() [L170] COND TRUE \read(systemActive) [L172] CALL processEnvironment() [L218] int tmp ; [L221] COND TRUE \read(pumpRunning) [L223] CALL, EXPR isMethaneAlarm() [L259] int retValue_acc ; [L263] CALL, EXPR isMethaneLevelCritical() [L479] int retValue_acc ; [L482] retValue_acc = methaneLevelCritical [L483] return (retValue_acc); [L263] RET, EXPR isMethaneLevelCritical() [L263] retValue_acc = isMethaneLevelCritical() [L265] return (retValue_acc); [L223] RET, EXPR isMethaneAlarm() [L223] tmp = isMethaneAlarm() [L225] COND FALSE !(\read(tmp)) [L231] CALL processEnvironment__wrappee__highWaterSensor() [L192] int tmp ; [L195] COND FALSE !(! pumpRunning) [L210] FCALL processEnvironment__wrappee__base() [L231] RET processEnvironment__wrappee__highWaterSensor() [L172] RET processEnvironment() [L178] CALL __utac_acc__Specification4_spec__1() [L901] int tmp ; [L902] int tmp___0 ; [L906] CALL, EXPR getWaterLevel() [L511] int retValue_acc ; [L514] retValue_acc = waterLevel [L515] return (retValue_acc); [L906] RET, EXPR getWaterLevel() [L906] tmp = getWaterLevel() [L908] COND FALSE !(tmp == 0) [L178] RET __utac_acc__Specification4_spec__1() [L135] RET timeShift() [L92] COND TRUE 1 [L94] COND TRUE splverifierCounter < 4 [L100] tmp = __VERIFIER_nondet_int() [L102] COND FALSE !(\read(tmp)) [L110] tmp___0 = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp___0)) [L120] tmp___2 = __VERIFIER_nondet_int() [L122] COND TRUE \read(tmp___2) [L135] CALL timeShift() [L163] COND TRUE \read(pumpRunning) [L165] CALL lowerWaterLevel() [L446] COND TRUE waterLevel > 0 [L447] waterLevel = waterLevel - 1 [L165] RET lowerWaterLevel() [L170] COND TRUE \read(systemActive) [L172] CALL processEnvironment() [L218] int tmp ; [L221] COND TRUE \read(pumpRunning) [L223] CALL, EXPR isMethaneAlarm() [L259] int retValue_acc ; [L263] CALL, EXPR isMethaneLevelCritical() [L479] int retValue_acc ; [L482] retValue_acc = methaneLevelCritical [L483] return (retValue_acc); [L263] RET, EXPR isMethaneLevelCritical() [L263] retValue_acc = isMethaneLevelCritical() [L265] return (retValue_acc); [L223] RET, EXPR isMethaneAlarm() [L223] tmp = isMethaneAlarm() [L225] COND FALSE !(\read(tmp)) [L231] CALL processEnvironment__wrappee__highWaterSensor() [L192] int tmp ; [L195] COND FALSE !(! pumpRunning) [L210] FCALL processEnvironment__wrappee__base() [L231] RET processEnvironment__wrappee__highWaterSensor() [L172] RET processEnvironment() [L178] CALL __utac_acc__Specification4_spec__1() [L901] int tmp ; [L902] int tmp___0 ; [L906] CALL, EXPR getWaterLevel() [L511] int retValue_acc ; [L514] retValue_acc = waterLevel [L515] return (retValue_acc); [L906] RET, EXPR getWaterLevel() [L906] tmp = getWaterLevel() [L908] COND TRUE tmp == 0 [L910] CALL, EXPR isPumpRunning() [L270] int retValue_acc ; [L273] retValue_acc = pumpRunning [L274] return (retValue_acc); [L910] RET, EXPR isPumpRunning() [L910] tmp___0 = isPumpRunning() [L912] COND TRUE \read(tmp___0) [L914] CALL __automaton_fail() [L434] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 43.1s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 36.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1237 SDtfs, 3056 SDslu, 1642 SDs, 0 SdLazy, 8730 SolverSat, 1968 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 517 GetRequests, 334 SyntacticMatches, 6 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 18.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=811occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 10 MinimizatonAttempts, 550 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 1125 NumberOfCodeBlocks, 1125 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 930 ConstructedInterpolants, 0 QuantifiedInterpolants, 339546 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 112/124 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...