/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 -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 0.1.25-5644d1e-m [2020-08-18 16:08:45,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:08:45,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:08:45,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:08:45,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:08:45,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:08:45,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:08:45,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:08:45,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:08:45,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:08:45,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:08:45,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:08:45,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:08:45,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:08:45,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:08:45,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:08:45,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:08:45,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:08:45,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:08:45,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:08:45,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:08:45,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:08:45,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:08:45,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:08:45,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:08:45,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:08:45,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:08:45,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:08:45,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:08:45,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:08:45,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:08:45,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:08:45,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:08:45,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:08:45,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:08:45,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:08:45,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:08:45,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:08:45,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:08:45,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:08:45,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:08:45,701 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 16:08:45,730 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:08:45,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:08:45,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:08:45,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:08:45,732 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:08:45,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:08:45,733 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:08:45,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:08:45,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:08:45,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:08:45,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:08:45,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:08:45,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:08:45,734 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:08:45,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:08:45,734 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:08:45,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:08:45,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:08:45,735 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:08:45,735 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:08:45,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:08:45,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:08:45,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:08:45,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:08:45,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:08:45,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:08:45,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:08:45,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:08:45,737 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:08:45,737 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 [2020-08-18 16:08:46,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:08:46,067 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:08:46,071 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:08:46,072 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:08:46,073 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:08:46,074 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product37.cil.c [2020-08-18 16:08:46,154 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efc9e31b2/7d8605fa52e64f02874cf2d80a7f1a9f/FLAGf71511277 [2020-08-18 16:08:46,627 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:08:46,628 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product37.cil.c [2020-08-18 16:08:46,642 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efc9e31b2/7d8605fa52e64f02874cf2d80a7f1a9f/FLAGf71511277 [2020-08-18 16:08:46,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efc9e31b2/7d8605fa52e64f02874cf2d80a7f1a9f [2020-08-18 16:08:46,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:08:46,956 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:08:46,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:08:46,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:08:46,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:08:46,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:08:46" (1/1) ... [2020-08-18 16:08:46,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dac89bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:46, skipping insertion in model container [2020-08-18 16:08:46,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:08:46" (1/1) ... [2020-08-18 16:08:46,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:08:47,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:08:47,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:08:47,449 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:08:47,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:08:47,674 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:08:47,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:47 WrapperNode [2020-08-18 16:08:47,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:08:47,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:08:47,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:08:47,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:08:47,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:47" (1/1) ... [2020-08-18 16:08:47,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:47" (1/1) ... [2020-08-18 16:08:47,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:47" (1/1) ... [2020-08-18 16:08:47,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:47" (1/1) ... [2020-08-18 16:08:47,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:47" (1/1) ... [2020-08-18 16:08:47,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:47" (1/1) ... [2020-08-18 16:08:47,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:47" (1/1) ... [2020-08-18 16:08:47,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:08:47,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:08:47,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:08:47,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:08:47,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:08:47,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:08:47,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:08:47,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:08:47,828 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:08:47,828 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:08:47,828 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:08:47,828 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:08:47,829 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:08:47,829 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:08:47,829 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:08:47,829 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:08:47,829 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:08:47,829 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:08:47,830 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:08:47,830 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:08:47,830 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:08:47,830 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:08:47,830 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:08:47,830 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:08:47,830 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:08:47,831 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:08:47,831 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:08:47,831 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:08:47,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:08:47,831 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:08:47,831 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:08:47,832 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:08:47,832 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:08:47,832 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:08:47,832 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:08:47,832 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:08:47,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:08:47,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:08:47,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:08:47,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:08:47,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:08:47,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:08:47,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 16:08:47,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:08:47,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:08:47,834 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:08:47,834 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:08:47,834 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:08:47,834 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:08:47,834 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:08:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:08:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:08:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:08:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:08:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:08:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:08:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:08:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:08:47,836 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:08:47,836 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:08:47,836 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:08:47,836 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:08:47,836 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:08:47,836 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 16:08:47,836 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:08:47,837 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:08:47,837 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:08:47,837 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:08:47,837 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:08:47,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:08:47,837 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:08:47,837 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:08:47,837 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:08:47,837 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:08:47,838 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:08:47,838 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:08:47,838 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:08:47,838 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:08:47,838 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:08:47,838 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:08:47,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:08:47,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:08:47,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:08:47,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:08:47,839 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:08:47,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:08:47,839 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:08:47,840 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:08:47,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:08:47,840 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:08:47,840 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:08:47,840 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:08:47,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:08:47,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:08:47,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:08:48,884 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:08:48,885 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:08:48,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:08:48 BoogieIcfgContainer [2020-08-18 16:08:48,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:08:48,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:08:48,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:08:48,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:08:48,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:08:46" (1/3) ... [2020-08-18 16:08:48,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca69469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:08:48, skipping insertion in model container [2020-08-18 16:08:48,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:08:47" (2/3) ... [2020-08-18 16:08:48,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca69469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:08:48, skipping insertion in model container [2020-08-18 16:08:48,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:08:48" (3/3) ... [2020-08-18 16:08:48,899 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product37.cil.c [2020-08-18 16:08:48,909 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:08:48,917 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:08:48,931 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:08:48,955 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:08:48,955 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:08:48,956 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:08:48,956 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:08:48,956 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:08:48,956 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:08:48,956 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:08:48,956 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:08:48,977 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-18 16:08:48,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 16:08:48,987 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:08:48,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:08:48,988 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:08:48,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:08:48,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1144967718, now seen corresponding path program 1 times [2020-08-18 16:08:49,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:08:49,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623117433] [2020-08-18 16:08:49,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:08:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:49,670 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:08:49,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:08:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:49,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:08:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:49,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:08:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:49,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:08:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:49,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:08:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:49,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:08:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:49,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:08:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:49,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:08:49,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623117433] [2020-08-18 16:08:49,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:08:49,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:08:49,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946635486] [2020-08-18 16:08:49,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:08:49,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:08:49,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:08:49,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:08:49,816 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 3 states. [2020-08-18 16:08:50,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:08:50,967 INFO L93 Difference]: Finished difference Result 293 states and 382 transitions. [2020-08-18 16:08:50,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:08:50,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 16:08:50,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:08:50,984 INFO L225 Difference]: With dead ends: 293 [2020-08-18 16:08:50,984 INFO L226 Difference]: Without dead ends: 158 [2020-08-18 16:08:50,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:08:51,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-18 16:08:51,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 126. [2020-08-18 16:08:51,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-18 16:08:51,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2020-08-18 16:08:51,077 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 46 [2020-08-18 16:08:51,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:08:51,078 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2020-08-18 16:08:51,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:08:51,078 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2020-08-18 16:08:51,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 16:08:51,082 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:08:51,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:08:51,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:08:51,083 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:08:51,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:08:51,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1860542733, now seen corresponding path program 1 times [2020-08-18 16:08:51,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:08:51,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690612241] [2020-08-18 16:08:51,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:08:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:51,453 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:08:51,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:08:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:51,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:08:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:51,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:08:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:51,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:08:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:51,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:08:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:51,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:08:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:51,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:08:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:51,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:08:51,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690612241] [2020-08-18 16:08:51,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:08:51,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:08:51,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662045088] [2020-08-18 16:08:51,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:08:51,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:08:51,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:08:51,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:08:51,502 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand 4 states. [2020-08-18 16:08:51,933 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:08:52,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:08:52,751 INFO L93 Difference]: Finished difference Result 226 states and 273 transitions. [2020-08-18 16:08:52,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:08:52,752 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 16:08:52,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:08:52,756 INFO L225 Difference]: With dead ends: 226 [2020-08-18 16:08:52,756 INFO L226 Difference]: Without dead ends: 142 [2020-08-18 16:08:52,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:08:52,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-08-18 16:08:52,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 117. [2020-08-18 16:08:52,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-18 16:08:52,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2020-08-18 16:08:52,797 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 47 [2020-08-18 16:08:52,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:08:52,798 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2020-08-18 16:08:52,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:08:52,798 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2020-08-18 16:08:52,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 16:08:52,800 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:08:52,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:08:52,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:08:52,801 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:08:52,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:08:52,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1943742618, now seen corresponding path program 1 times [2020-08-18 16:08:52,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:08:52,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633880093] [2020-08-18 16:08:52,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:08:52,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:53,128 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:08:53,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:08:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:53,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:08:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:53,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:08:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:53,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:08:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:53,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:08:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:53,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:08:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:53,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:08:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:53,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:08:53,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633880093] [2020-08-18 16:08:53,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:08:53,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:08:53,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227582116] [2020-08-18 16:08:53,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:08:53,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:08:53,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:08:53,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:08:53,248 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 8 states. [2020-08-18 16:08:53,620 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:08:53,957 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:08:54,202 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:08:54,426 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:08:55,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:08:55,467 INFO L93 Difference]: Finished difference Result 235 states and 287 transitions. [2020-08-18 16:08:55,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 16:08:55,470 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 16:08:55,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:08:55,472 INFO L225 Difference]: With dead ends: 235 [2020-08-18 16:08:55,473 INFO L226 Difference]: Without dead ends: 142 [2020-08-18 16:08:55,474 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 [2020-08-18 16:08:55,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-08-18 16:08:55,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 117. [2020-08-18 16:08:55,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-18 16:08:55,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 134 transitions. [2020-08-18 16:08:55,508 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 134 transitions. Word has length 51 [2020-08-18 16:08:55,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:08:55,508 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 134 transitions. [2020-08-18 16:08:55,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:08:55,508 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 134 transitions. [2020-08-18 16:08:55,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 16:08:55,511 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:08:55,511 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] [2020-08-18 16:08:55,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:08:55,512 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:08:55,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:08:55,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1699182139, now seen corresponding path program 1 times [2020-08-18 16:08:55,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:08:55,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562353253] [2020-08-18 16:08:55,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:08:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:55,814 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:08:55,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:08:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:55,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:08:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:55,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:08:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:55,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:08:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:55,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:08:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:55,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:08:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:55,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:08:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:55,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:08:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:55,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 16:08:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:55,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 16:08:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:08:55,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562353253] [2020-08-18 16:08:55,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:08:55,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 16:08:55,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534819201] [2020-08-18 16:08:55,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:08:55,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:08:55,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:08:55,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:08:55,931 INFO L87 Difference]: Start difference. First operand 117 states and 134 transitions. Second operand 6 states. [2020-08-18 16:08:56,233 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:08:57,288 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:08:57,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:08:57,882 INFO L93 Difference]: Finished difference Result 327 states and 403 transitions. [2020-08-18 16:08:57,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:08:57,883 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-18 16:08:57,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:08:57,887 INFO L225 Difference]: With dead ends: 327 [2020-08-18 16:08:57,887 INFO L226 Difference]: Without dead ends: 234 [2020-08-18 16:08:57,889 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 [2020-08-18 16:08:57,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-08-18 16:08:57,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 193. [2020-08-18 16:08:57,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-08-18 16:08:57,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 219 transitions. [2020-08-18 16:08:57,934 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 219 transitions. Word has length 64 [2020-08-18 16:08:57,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:08:57,935 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 219 transitions. [2020-08-18 16:08:57,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:08:57,935 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 219 transitions. [2020-08-18 16:08:57,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 16:08:57,938 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:08:57,938 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] [2020-08-18 16:08:57,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:08:57,939 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:08:57,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:08:57,939 INFO L82 PathProgramCache]: Analyzing trace with hash 906371281, now seen corresponding path program 1 times [2020-08-18 16:08:57,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:08:57,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367375983] [2020-08-18 16:08:57,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:08:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:58,309 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:08:58,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:08:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:58,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:08:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:58,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:08:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:58,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:08:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:58,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:08:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:58,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:08:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:58,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:08:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:58,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:08:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:58,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:08:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:58,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:08:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:58,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 16:08:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:58,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 16:08:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:08:58,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:08:58,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367375983] [2020-08-18 16:08:58,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:08:58,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 16:08:58,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487033746] [2020-08-18 16:08:58,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:08:58,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:08:58,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:08:58,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:08:58,421 INFO L87 Difference]: Start difference. First operand 193 states and 219 transitions. Second operand 12 states. [2020-08-18 16:08:58,856 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:08:59,155 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:08:59,406 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:08:59,666 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:00,198 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:01,079 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:01,389 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:01,626 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:01,863 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:02,139 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:02,407 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:03,710 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:04,074 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:04,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:04,701 INFO L93 Difference]: Finished difference Result 671 states and 870 transitions. [2020-08-18 16:09:04,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 16:09:04,704 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2020-08-18 16:09:04,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:04,709 INFO L225 Difference]: With dead ends: 671 [2020-08-18 16:09:04,710 INFO L226 Difference]: Without dead ends: 502 [2020-08-18 16:09:04,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 16:09:04,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-08-18 16:09:04,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 444. [2020-08-18 16:09:04,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-08-18 16:09:04,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 523 transitions. [2020-08-18 16:09:04,814 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 523 transitions. Word has length 78 [2020-08-18 16:09:04,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:04,815 INFO L479 AbstractCegarLoop]: Abstraction has 444 states and 523 transitions. [2020-08-18 16:09:04,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:09:04,815 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 523 transitions. [2020-08-18 16:09:04,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-18 16:09:04,819 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:04,819 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] [2020-08-18 16:09:04,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:09:04,820 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:04,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:04,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1573115002, now seen corresponding path program 1 times [2020-08-18 16:09:04,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:04,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408389439] [2020-08-18 16:09:04,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:05,111 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:05,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:05,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:05,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:05,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:05,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:05,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:05,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:09:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:05,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:09:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:05,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:05,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:05,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:05,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:05,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:09:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:05,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:09:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:05,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:05,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 16:09:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:05,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 16:09:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:05,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:05,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:05,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:09:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:05,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 16:09:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:05,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 16:09:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:05,422 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 16:09:05,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408389439] [2020-08-18 16:09:05,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:09:05,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 16:09:05,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296911155] [2020-08-18 16:09:05,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 16:09:05,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:05,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 16:09:05,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 16:09:05,426 INFO L87 Difference]: Start difference. First operand 444 states and 523 transitions. Second operand 13 states. [2020-08-18 16:09:05,932 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:06,535 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:07,040 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:07,298 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 16:09:07,570 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:07,820 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:08,078 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:08,322 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 16:09:08,606 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:08,868 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:10,349 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:10,582 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:09:10,811 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:11,056 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:11,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:11,460 INFO L93 Difference]: Finished difference Result 898 states and 1145 transitions. [2020-08-18 16:09:11,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 16:09:11,461 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-08-18 16:09:11,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:11,466 INFO L225 Difference]: With dead ends: 898 [2020-08-18 16:09:11,467 INFO L226 Difference]: Without dead ends: 478 [2020-08-18 16:09:11,469 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 [2020-08-18 16:09:11,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-08-18 16:09:11,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 416. [2020-08-18 16:09:11,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-18 16:09:11,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 494 transitions. [2020-08-18 16:09:11,551 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 494 transitions. Word has length 130 [2020-08-18 16:09:11,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:11,551 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 494 transitions. [2020-08-18 16:09:11,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 16:09:11,552 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 494 transitions. [2020-08-18 16:09:11,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-08-18 16:09:11,554 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:11,554 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] [2020-08-18 16:09:11,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:09:11,555 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:11,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:11,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1101814222, now seen corresponding path program 1 times [2020-08-18 16:09:11,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:11,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266805817] [2020-08-18 16:09:11,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,824 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:11,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:09:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:09:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:09:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 16:09:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:11,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 16:09:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:12,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:12,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:12,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:09:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:12,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 16:09:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:12,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 16:09:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 16:09:12,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266805817] [2020-08-18 16:09:12,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:09:12,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 16:09:12,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019918752] [2020-08-18 16:09:12,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:09:12,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:12,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:09:12,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:09:12,041 INFO L87 Difference]: Start difference. First operand 416 states and 494 transitions. Second operand 12 states. [2020-08-18 16:09:13,107 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:13,339 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:13,557 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:14,109 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:14,352 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:14,570 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:15,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:15,544 INFO L93 Difference]: Finished difference Result 757 states and 931 transitions. [2020-08-18 16:09:15,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:09:15,545 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 126 [2020-08-18 16:09:15,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:15,549 INFO L225 Difference]: With dead ends: 757 [2020-08-18 16:09:15,550 INFO L226 Difference]: Without dead ends: 365 [2020-08-18 16:09:15,554 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 [2020-08-18 16:09:15,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-08-18 16:09:15,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 341. [2020-08-18 16:09:15,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-08-18 16:09:15,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 402 transitions. [2020-08-18 16:09:15,643 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 402 transitions. Word has length 126 [2020-08-18 16:09:15,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:15,644 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 402 transitions. [2020-08-18 16:09:15,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:09:15,644 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 402 transitions. [2020-08-18 16:09:15,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-18 16:09:15,648 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:15,648 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] [2020-08-18 16:09:15,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:09:15,649 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:15,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:15,649 INFO L82 PathProgramCache]: Analyzing trace with hash -2074968439, now seen corresponding path program 1 times [2020-08-18 16:09:15,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:15,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141996277] [2020-08-18 16:09:15,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:15,915 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:15,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:15,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:15,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:15,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:15,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:15,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:09:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:15,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:09:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:15,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:09:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:09:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 16:09:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 16:09:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:09:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 16:09:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 16:09:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,154 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-18 16:09:16,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141996277] [2020-08-18 16:09:16,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:09:16,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 16:09:16,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249145828] [2020-08-18 16:09:16,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 16:09:16,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:16,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 16:09:16,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 16:09:16,158 INFO L87 Difference]: Start difference. First operand 341 states and 402 transitions. Second operand 13 states. [2020-08-18 16:09:16,994 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:17,653 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:19,355 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:19,636 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:19,900 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:20,152 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:20,415 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:20,685 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:20,935 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:21,174 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:21,461 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:21,721 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:22,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:22,285 INFO L93 Difference]: Finished difference Result 954 states and 1168 transitions. [2020-08-18 16:09:22,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 16:09:22,286 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-08-18 16:09:22,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:22,291 INFO L225 Difference]: With dead ends: 954 [2020-08-18 16:09:22,292 INFO L226 Difference]: Without dead ends: 637 [2020-08-18 16:09:22,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=207, Invalid=785, Unknown=0, NotChecked=0, Total=992 [2020-08-18 16:09:22,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2020-08-18 16:09:22,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 598. [2020-08-18 16:09:22,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-08-18 16:09:22,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 696 transitions. [2020-08-18 16:09:22,435 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 696 transitions. Word has length 130 [2020-08-18 16:09:22,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:22,436 INFO L479 AbstractCegarLoop]: Abstraction has 598 states and 696 transitions. [2020-08-18 16:09:22,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 16:09:22,436 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 696 transitions. [2020-08-18 16:09:22,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 16:09:22,441 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:22,441 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] [2020-08-18 16:09:22,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:09:22,442 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:22,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:22,442 INFO L82 PathProgramCache]: Analyzing trace with hash 106896037, now seen corresponding path program 1 times [2020-08-18 16:09:22,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:22,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345619886] [2020-08-18 16:09:22,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:22,758 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:22,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:22,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:22,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:22,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:22,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:22,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:09:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:22,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:09:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:22,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:09:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:22,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:22,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:22,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:22,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:22,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:09:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:22,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:09:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:22,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:22,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 16:09:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:22,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 16:09:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:22,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:22,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:22,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:09:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:22,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 16:09:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:22,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-18 16:09:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:22,918 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-18 16:09:22,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345619886] [2020-08-18 16:09:22,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:09:22,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 16:09:22,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931819095] [2020-08-18 16:09:22,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 16:09:22,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:22,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 16:09:22,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:09:22,924 INFO L87 Difference]: Start difference. First operand 598 states and 696 transitions. Second operand 11 states. [2020-08-18 16:09:23,665 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:25,294 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:25,530 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:25,798 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:26,062 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:26,318 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:26,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:26,604 INFO L93 Difference]: Finished difference Result 703 states and 873 transitions. [2020-08-18 16:09:26,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 16:09:26,605 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 134 [2020-08-18 16:09:26,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:26,615 INFO L225 Difference]: With dead ends: 703 [2020-08-18 16:09:26,616 INFO L226 Difference]: Without dead ends: 700 [2020-08-18 16:09:26,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2020-08-18 16:09:26,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-08-18 16:09:26,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 598. [2020-08-18 16:09:26,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-08-18 16:09:26,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 694 transitions. [2020-08-18 16:09:26,767 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 694 transitions. Word has length 134 [2020-08-18 16:09:26,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:26,769 INFO L479 AbstractCegarLoop]: Abstraction has 598 states and 694 transitions. [2020-08-18 16:09:26,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 16:09:26,769 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 694 transitions. [2020-08-18 16:09:26,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 16:09:26,772 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:26,772 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] [2020-08-18 16:09:26,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:09:26,772 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:26,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:26,773 INFO L82 PathProgramCache]: Analyzing trace with hash -355706806, now seen corresponding path program 1 times [2020-08-18 16:09:26,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:26,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145208507] [2020-08-18 16:09:26,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:27,089 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:27,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:27,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:27,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:27,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:27,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:27,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:09:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:27,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:09:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:27,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:27,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:27,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:27,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:27,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:09:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:27,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 16:09:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:27,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:27,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 16:09:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:27,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 16:09:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:27,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:27,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:27,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:09:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:27,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:27,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 16:09:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:27,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-18 16:09:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 16:09:27,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145208507] [2020-08-18 16:09:27,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:09:27,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 16:09:27,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782146720] [2020-08-18 16:09:27,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:09:27,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:27,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:09:27,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:09:27,361 INFO L87 Difference]: Start difference. First operand 598 states and 694 transitions. Second operand 12 states. [2020-08-18 16:09:28,151 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:29,020 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:29,566 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:29,831 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:30,067 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:30,304 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:30,553 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:30,807 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:32,337 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:32,573 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:33,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:33,152 INFO L93 Difference]: Finished difference Result 1409 states and 1754 transitions. [2020-08-18 16:09:33,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 16:09:33,153 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 134 [2020-08-18 16:09:33,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:33,160 INFO L225 Difference]: With dead ends: 1409 [2020-08-18 16:09:33,160 INFO L226 Difference]: Without dead ends: 953 [2020-08-18 16:09:33,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-18 16:09:33,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2020-08-18 16:09:33,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 811. [2020-08-18 16:09:33,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2020-08-18 16:09:33,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 956 transitions. [2020-08-18 16:09:33,321 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 956 transitions. Word has length 134 [2020-08-18 16:09:33,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:33,321 INFO L479 AbstractCegarLoop]: Abstraction has 811 states and 956 transitions. [2020-08-18 16:09:33,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:09:33,322 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 956 transitions. [2020-08-18 16:09:33,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-08-18 16:09:33,327 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:33,327 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] [2020-08-18 16:09:33,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:09:33,328 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:33,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:33,329 INFO L82 PathProgramCache]: Analyzing trace with hash -775865217, now seen corresponding path program 2 times [2020-08-18 16:09:33,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:33,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086397022] [2020-08-18 16:09:33,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 16:09:33,436 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 16:09:33,436 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 16:09:33,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 16:09:33,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:09:33 BoogieIcfgContainer [2020-08-18 16:09:33,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:09:33,486 INFO L168 Benchmark]: Toolchain (without parser) took 46529.44 ms. Allocated memory was 141.6 MB in the beginning and 701.0 MB in the end (delta: 559.4 MB). Free memory was 104.2 MB in the beginning and 640.9 MB in the end (delta: -536.7 MB). Peak memory consumption was 556.6 MB. Max. memory is 7.1 GB. [2020-08-18 16:09:33,487 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 16:09:33,490 INFO L168 Benchmark]: CACSL2BoogieTranslator took 718.25 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 103.9 MB in the beginning and 175.9 MB in the end (delta: -72.0 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2020-08-18 16:09:33,492 INFO L168 Benchmark]: Boogie Preprocessor took 90.40 ms. Allocated memory is still 205.5 MB. Free memory was 175.9 MB in the beginning and 171.2 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-08-18 16:09:33,494 INFO L168 Benchmark]: RCFGBuilder took 1123.29 ms. Allocated memory was 205.5 MB in the beginning and 235.4 MB in the end (delta: 29.9 MB). Free memory was 171.2 MB in the beginning and 196.5 MB in the end (delta: -25.3 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. [2020-08-18 16:09:33,497 INFO L168 Benchmark]: TraceAbstraction took 44592.70 ms. Allocated memory was 235.4 MB in the beginning and 701.0 MB in the end (delta: 465.6 MB). Free memory was 196.5 MB in the beginning and 640.9 MB in the end (delta: -444.4 MB). Peak memory consumption was 555.0 MB. Max. memory is 7.1 GB. [2020-08-18 16:09:33,500 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 718.25 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 103.9 MB in the beginning and 175.9 MB in the end (delta: -72.0 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.40 ms. Allocated memory is still 205.5 MB. Free memory was 175.9 MB in the beginning and 171.2 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1123.29 ms. Allocated memory was 205.5 MB in the beginning and 235.4 MB in the end (delta: 29.9 MB). Free memory was 171.2 MB in the beginning and 196.5 MB in the end (delta: -25.3 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 44592.70 ms. Allocated memory was 235.4 MB in the beginning and 701.0 MB in the end (delta: 465.6 MB). Free memory was 196.5 MB in the beginning and 640.9 MB in the end (delta: -444.4 MB). Peak memory consumption was 555.0 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: 44.4s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 38.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1236 SDtfs, 3056 SDslu, 1639 SDs, 0 SdLazy, 8709 SolverSat, 1972 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 517 GetRequests, 334 SyntacticMatches, 6 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 19.1s 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, 4.3s 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...