/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:11:09,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:11:09,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:11:09,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:11:09,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:11:09,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:11:09,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:11:09,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:11:09,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:11:09,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:11:09,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:11:09,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:11:09,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:11:09,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:11:09,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:11:09,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:11:09,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:11:09,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:11:09,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:11:09,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:11:09,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:11:09,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:11:09,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:11:09,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:11:09,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:11:09,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:11:09,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:11:09,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:11:09,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:11:09,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:11:09,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:11:09,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:11:09,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:11:09,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:11:09,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:11:09,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:11:09,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:11:09,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:11:09,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:11:09,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:11:09,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:11:09,806 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 13:11:09,844 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:11:09,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:11:09,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:11:09,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:11:09,847 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:11:09,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:11:09,847 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:11:09,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:11:09,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:11:09,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:11:09,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:11:09,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:11:09,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:11:09,849 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:11:09,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:11:09,850 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:11:09,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:11:09,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:11:09,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:11:09,851 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:11:09,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:11:09,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:11:09,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:11:09,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:11:09,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:11:09,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:11:09,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:11:09,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:11:09,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:11:09,853 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 -> false [2020-08-21 13:11:10,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:11:10,211 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:11:10,215 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:11:10,216 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:11:10,216 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:11:10,217 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c [2020-08-21 13:11:10,292 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/797041194/9439c2013c0c4e2684297063fdf0b1fb/FLAGa787e9400 [2020-08-21 13:11:10,792 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:11:10,793 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c [2020-08-21 13:11:10,809 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/797041194/9439c2013c0c4e2684297063fdf0b1fb/FLAGa787e9400 [2020-08-21 13:11:11,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/797041194/9439c2013c0c4e2684297063fdf0b1fb [2020-08-21 13:11:11,094 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:11:11,096 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:11:11,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:11:11,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:11:11,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:11:11,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:11:11" (1/1) ... [2020-08-21 13:11:11,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b79fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:11, skipping insertion in model container [2020-08-21 13:11:11,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:11:11" (1/1) ... [2020-08-21 13:11:11,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:11:11,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:11:11,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:11:11,499 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:11:11,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:11:11,747 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:11:11,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:11 WrapperNode [2020-08-21 13:11:11,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:11:11,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:11:11,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:11:11,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:11:11,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:11" (1/1) ... [2020-08-21 13:11:11,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:11" (1/1) ... [2020-08-21 13:11:11,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:11" (1/1) ... [2020-08-21 13:11:11,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:11" (1/1) ... [2020-08-21 13:11:11,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:11" (1/1) ... [2020-08-21 13:11:11,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:11" (1/1) ... [2020-08-21 13:11:11,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:11" (1/1) ... [2020-08-21 13:11:11,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:11:11,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:11:11,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:11:11,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:11:11,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:11:11,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:11:11,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:11:11,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 13:11:11,951 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 13:11:11,951 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 13:11:11,951 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 13:11:11,952 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 13:11:11,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 13:11:11,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 13:11:11,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 13:11:11,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 13:11:11,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 13:11:11,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 13:11:11,954 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 13:11:11,954 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 13:11:11,955 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 13:11:11,955 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:11:11,955 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 13:11:11,956 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 13:11:11,956 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 13:11:11,956 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 13:11:11,956 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 13:11:11,956 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 13:11:11,957 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 13:11:11,957 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 13:11:11,958 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 13:11:11,958 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 13:11:11,958 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 13:11:11,958 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 13:11:11,959 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 13:11:11,959 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 13:11:11,959 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 13:11:11,960 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 13:11:11,960 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 13:11:11,960 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 13:11:11,960 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 13:11:11,960 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 13:11:11,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:11:11,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 13:11:11,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:11:11,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:11:11,961 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 13:11:11,961 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 13:11:11,962 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 13:11:11,962 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 13:11:11,962 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 13:11:11,962 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 13:11:11,963 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 13:11:11,963 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 13:11:11,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 13:11:11,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 13:11:11,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 13:11:11,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:11:11,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 13:11:11,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 13:11:11,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:11:11,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 13:11:11,965 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 13:11:11,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:11:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 13:11:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 13:11:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:11:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 13:11:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 13:11:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 13:11:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 13:11:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 13:11:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 13:11:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 13:11:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 13:11:11,968 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 13:11:11,968 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 13:11:11,969 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 13:11:11,969 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 13:11:11,969 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 13:11:11,969 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 13:11:11,970 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 13:11:11,970 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 13:11:11,970 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 13:11:11,970 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 13:11:11,971 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 13:11:11,971 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:11:11,971 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 13:11:11,972 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 13:11:11,972 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 13:11:11,972 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 13:11:11,972 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 13:11:11,973 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 13:11:11,974 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:11:11,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:11:11,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 13:11:11,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:11:13,073 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:11:13,073 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 13:11:13,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:11:13 BoogieIcfgContainer [2020-08-21 13:11:13,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:11:13,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:11:13,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:11:13,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:11:13,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:11:11" (1/3) ... [2020-08-21 13:11:13,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336a50a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:11:13, skipping insertion in model container [2020-08-21 13:11:13,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:11" (2/3) ... [2020-08-21 13:11:13,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336a50a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:11:13, skipping insertion in model container [2020-08-21 13:11:13,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:11:13" (3/3) ... [2020-08-21 13:11:13,092 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product39.cil.c [2020-08-21 13:11:13,102 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:11:13,112 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:11:13,127 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:11:13,152 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:11:13,153 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:11:13,153 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:11:13,153 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:11:13,153 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:11:13,153 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:11:13,153 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:11:13,153 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:11:13,175 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-21 13:11:13,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 13:11:13,186 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:13,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:11:13,188 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:13,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:13,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1123456625, now seen corresponding path program 1 times [2020-08-21 13:11:13,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:13,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193682032] [2020-08-21 13:11:13,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:13,863 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:13,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:13,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:13,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:13,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:13,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:13,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:11:13,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:13,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:11:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:13,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:11:13,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193682032] [2020-08-21 13:11:13,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:11:13,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 13:11:13,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717495637] [2020-08-21 13:11:13,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 13:11:13,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:13,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 13:11:13,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:11:13,993 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 3 states. [2020-08-21 13:11:15,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:15,166 INFO L93 Difference]: Finished difference Result 307 states and 401 transitions. [2020-08-21 13:11:15,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 13:11:15,168 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 13:11:15,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:15,183 INFO L225 Difference]: With dead ends: 307 [2020-08-21 13:11:15,183 INFO L226 Difference]: Without dead ends: 166 [2020-08-21 13:11:15,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:11:15,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-21 13:11:15,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 132. [2020-08-21 13:11:15,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-21 13:11:15,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 155 transitions. [2020-08-21 13:11:15,289 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 155 transitions. Word has length 46 [2020-08-21 13:11:15,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:15,290 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 155 transitions. [2020-08-21 13:11:15,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 13:11:15,291 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 155 transitions. [2020-08-21 13:11:15,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 13:11:15,302 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:15,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:11:15,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:11:15,303 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:15,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:15,303 INFO L82 PathProgramCache]: Analyzing trace with hash -790150173, now seen corresponding path program 1 times [2020-08-21 13:11:15,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:15,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563257027] [2020-08-21 13:11:15,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:15,698 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:15,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:15,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:15,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:15,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:15,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:15,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:11:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:15,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 13:11:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:15,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:11:15,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563257027] [2020-08-21 13:11:15,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:11:15,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:11:15,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593855773] [2020-08-21 13:11:15,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:11:15,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:15,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:11:15,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:11:15,746 INFO L87 Difference]: Start difference. First operand 132 states and 155 transitions. Second operand 4 states. [2020-08-21 13:11:16,153 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:16,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:16,997 INFO L93 Difference]: Finished difference Result 234 states and 284 transitions. [2020-08-21 13:11:16,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 13:11:16,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 13:11:17,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:17,003 INFO L225 Difference]: With dead ends: 234 [2020-08-21 13:11:17,003 INFO L226 Difference]: Without dead ends: 150 [2020-08-21 13:11:17,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:11:17,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-08-21 13:11:17,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 123. [2020-08-21 13:11:17,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-21 13:11:17,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2020-08-21 13:11:17,043 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 47 [2020-08-21 13:11:17,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:17,043 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2020-08-21 13:11:17,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:11:17,044 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2020-08-21 13:11:17,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 13:11:17,045 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:17,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:11:17,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:11:17,046 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:17,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:17,046 INFO L82 PathProgramCache]: Analyzing trace with hash 271076632, now seen corresponding path program 1 times [2020-08-21 13:11:17,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:17,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523321056] [2020-08-21 13:11:17,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:17,372 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:17,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:17,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:17,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:17,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:17,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:17,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:11:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:17,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:11:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:17,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:11:17,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523321056] [2020-08-21 13:11:17,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:11:17,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:11:17,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970446467] [2020-08-21 13:11:17,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:11:17,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:17,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:11:17,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:11:17,491 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand 8 states. [2020-08-21 13:11:17,858 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:18,149 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:18,416 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:18,639 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:19,371 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:21,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:21,128 INFO L93 Difference]: Finished difference Result 421 states and 521 transitions. [2020-08-21 13:11:21,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 13:11:21,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 13:11:21,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:21,134 INFO L225 Difference]: With dead ends: 421 [2020-08-21 13:11:21,134 INFO L226 Difference]: Without dead ends: 322 [2020-08-21 13:11:21,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 13:11:21,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-08-21 13:11:21,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 264. [2020-08-21 13:11:21,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-08-21 13:11:21,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 318 transitions. [2020-08-21 13:11:21,208 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 318 transitions. Word has length 51 [2020-08-21 13:11:21,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:21,209 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 318 transitions. [2020-08-21 13:11:21,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:11:21,209 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 318 transitions. [2020-08-21 13:11:21,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 13:11:21,211 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:21,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:11:21,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:11:21,212 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:21,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:21,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1813365187, now seen corresponding path program 1 times [2020-08-21 13:11:21,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:21,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99613763] [2020-08-21 13:11:21,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:21,541 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:21,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:21,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:21,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:21,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:21,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:21,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:11:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:21,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:11:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:21,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 13:11:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:21,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:11:21,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99613763] [2020-08-21 13:11:21,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:11:21,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 13:11:21,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404909623] [2020-08-21 13:11:21,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:11:21,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:21,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:11:21,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:11:21,654 INFO L87 Difference]: Start difference. First operand 264 states and 318 transitions. Second operand 12 states. [2020-08-21 13:11:22,188 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:22,579 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:22,873 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:23,172 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:23,907 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:24,766 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:25,187 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:11:25,528 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:11:25,844 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:26,108 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:11:26,593 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:11:26,972 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:11:27,250 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:28,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:28,928 INFO L93 Difference]: Finished difference Result 1065 states and 1468 transitions. [2020-08-21 13:11:28,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 13:11:28,929 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-21 13:11:28,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:28,943 INFO L225 Difference]: With dead ends: 1065 [2020-08-21 13:11:28,944 INFO L226 Difference]: Without dead ends: 825 [2020-08-21 13:11:28,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 13:11:28,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2020-08-21 13:11:29,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 732. [2020-08-21 13:11:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-08-21 13:11:29,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 932 transitions. [2020-08-21 13:11:29,147 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 932 transitions. Word has length 57 [2020-08-21 13:11:29,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:29,148 INFO L479 AbstractCegarLoop]: Abstraction has 732 states and 932 transitions. [2020-08-21 13:11:29,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:11:29,148 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 932 transitions. [2020-08-21 13:11:29,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-21 13:11:29,152 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:29,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:11:29,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:11:29,152 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:29,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:29,153 INFO L82 PathProgramCache]: Analyzing trace with hash 2128676035, now seen corresponding path program 1 times [2020-08-21 13:11:29,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:29,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057615722] [2020-08-21 13:11:29,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:29,416 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:29,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:29,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:29,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:29,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:29,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:29,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:11:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:29,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:11:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:29,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 13:11:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:29,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 13:11:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:29,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:11:29,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057615722] [2020-08-21 13:11:29,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:11:29,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 13:11:29,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329232170] [2020-08-21 13:11:29,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 13:11:29,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:29,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 13:11:29,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 13:11:29,517 INFO L87 Difference]: Start difference. First operand 732 states and 932 transitions. Second operand 6 states. [2020-08-21 13:11:29,897 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:31,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:31,611 INFO L93 Difference]: Finished difference Result 1759 states and 2407 transitions. [2020-08-21 13:11:31,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 13:11:31,612 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-21 13:11:31,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:31,619 INFO L225 Difference]: With dead ends: 1759 [2020-08-21 13:11:31,619 INFO L226 Difference]: Without dead ends: 1051 [2020-08-21 13:11:31,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:11:31,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2020-08-21 13:11:31,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 964. [2020-08-21 13:11:31,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 964 states. [2020-08-21 13:11:31,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1220 transitions. [2020-08-21 13:11:31,812 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1220 transitions. Word has length 61 [2020-08-21 13:11:31,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:31,813 INFO L479 AbstractCegarLoop]: Abstraction has 964 states and 1220 transitions. [2020-08-21 13:11:31,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 13:11:31,813 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1220 transitions. [2020-08-21 13:11:31,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 13:11:31,815 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:31,816 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:11:31,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:11:31,816 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:31,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:31,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1754610703, now seen corresponding path program 1 times [2020-08-21 13:11:31,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:31,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32022462] [2020-08-21 13:11:31,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,099 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:32,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:11:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:11:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 13:11:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 13:11:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 13:11:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 13:11:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,269 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 13:11:32,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32022462] [2020-08-21 13:11:32,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:11:32,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 13:11:32,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531153869] [2020-08-21 13:11:32,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 13:11:32,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:32,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 13:11:32,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:11:32,272 INFO L87 Difference]: Start difference. First operand 964 states and 1220 transitions. Second operand 10 states. [2020-08-21 13:11:32,941 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-21 13:11:33,524 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:35,376 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:37,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:37,144 INFO L93 Difference]: Finished difference Result 1865 states and 2457 transitions. [2020-08-21 13:11:37,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 13:11:37,145 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-21 13:11:37,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:37,152 INFO L225 Difference]: With dead ends: 1865 [2020-08-21 13:11:37,153 INFO L226 Difference]: Without dead ends: 1168 [2020-08-21 13:11:37,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-21 13:11:37,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2020-08-21 13:11:37,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1071. [2020-08-21 13:11:37,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2020-08-21 13:11:37,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1331 transitions. [2020-08-21 13:11:37,348 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1331 transitions. Word has length 88 [2020-08-21 13:11:37,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:37,348 INFO L479 AbstractCegarLoop]: Abstraction has 1071 states and 1331 transitions. [2020-08-21 13:11:37,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 13:11:37,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1331 transitions. [2020-08-21 13:11:37,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-08-21 13:11:37,353 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:37,353 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:11:37,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:11:37,353 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:37,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:37,354 INFO L82 PathProgramCache]: Analyzing trace with hash 974998865, now seen corresponding path program 1 times [2020-08-21 13:11:37,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:37,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263577702] [2020-08-21 13:11:37,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:37,587 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:37,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:37,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:37,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:37,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:37,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:37,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:11:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:37,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:37,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:37,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:37,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:37,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:11:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:37,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:11:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:37,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:37,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 13:11:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:37,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 13:11:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:37,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:37,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:37,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:11:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:37,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 13:11:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:37,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 13:11:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:37,788 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 13:11:37,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263577702] [2020-08-21 13:11:37,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:11:37,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 13:11:37,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283708172] [2020-08-21 13:11:37,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 13:11:37,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:37,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 13:11:37,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:11:37,796 INFO L87 Difference]: Start difference. First operand 1071 states and 1331 transitions. Second operand 10 states. [2020-08-21 13:11:38,755 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:39,019 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:11:39,266 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:39,512 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:40,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:40,610 INFO L93 Difference]: Finished difference Result 2259 states and 2935 transitions. [2020-08-21 13:11:40,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 13:11:40,611 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 126 [2020-08-21 13:11:40,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:40,620 INFO L225 Difference]: With dead ends: 2259 [2020-08-21 13:11:40,621 INFO L226 Difference]: Without dead ends: 1212 [2020-08-21 13:11:40,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:11:40,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2020-08-21 13:11:40,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1101. [2020-08-21 13:11:40,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1101 states. [2020-08-21 13:11:40,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1365 transitions. [2020-08-21 13:11:40,901 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1365 transitions. Word has length 126 [2020-08-21 13:11:40,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:40,902 INFO L479 AbstractCegarLoop]: Abstraction has 1101 states and 1365 transitions. [2020-08-21 13:11:40,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 13:11:40,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1365 transitions. [2020-08-21 13:11:40,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-21 13:11:40,907 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:40,907 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:11:40,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 13:11:40,908 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:40,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:40,908 INFO L82 PathProgramCache]: Analyzing trace with hash 920016537, now seen corresponding path program 1 times [2020-08-21 13:11:40,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:40,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343865245] [2020-08-21 13:11:40,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:41,232 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:41,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:41,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:41,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:41,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:41,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:41,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:11:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:41,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:41,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:41,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:41,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:41,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:11:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:41,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:11:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:41,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:41,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 13:11:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:41,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 13:11:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:41,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 13:11:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:41,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:41,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:41,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:11:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:41,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 13:11:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:41,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 13:11:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:41,438 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 13:11:41,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343865245] [2020-08-21 13:11:41,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:11:41,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 13:11:41,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753795405] [2020-08-21 13:11:41,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:11:41,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:41,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:11:41,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:11:41,442 INFO L87 Difference]: Start difference. First operand 1101 states and 1365 transitions. Second operand 12 states. [2020-08-21 13:11:41,981 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:42,228 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:42,468 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:43,166 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:43,425 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:43,662 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:44,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:44,705 INFO L93 Difference]: Finished difference Result 2069 states and 2643 transitions. [2020-08-21 13:11:44,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:11:44,706 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-21 13:11:44,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:44,712 INFO L225 Difference]: With dead ends: 2069 [2020-08-21 13:11:44,712 INFO L226 Difference]: Without dead ends: 992 [2020-08-21 13:11:44,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 13:11:44,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2020-08-21 13:11:44,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 936. [2020-08-21 13:11:44,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 936 states. [2020-08-21 13:11:44,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1136 transitions. [2020-08-21 13:11:44,961 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1136 transitions. Word has length 130 [2020-08-21 13:11:44,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:44,961 INFO L479 AbstractCegarLoop]: Abstraction has 936 states and 1136 transitions. [2020-08-21 13:11:44,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:11:44,961 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1136 transitions. [2020-08-21 13:11:44,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-21 13:11:44,966 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:44,966 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:11:44,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 13:11:44,967 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:44,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:44,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1767310158, now seen corresponding path program 1 times [2020-08-21 13:11:44,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:44,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116110925] [2020-08-21 13:11:44,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,214 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:45,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:11:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:11:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:11:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:11:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 13:11:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 13:11:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:11:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 13:11:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 13:11:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,407 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-21 13:11:45,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116110925] [2020-08-21 13:11:45,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:11:45,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 13:11:45,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996364910] [2020-08-21 13:11:45,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 13:11:45,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:45,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 13:11:45,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 13:11:45,409 INFO L87 Difference]: Start difference. First operand 936 states and 1136 transitions. Second operand 13 states. [2020-08-21 13:11:45,927 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:46,621 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:48,704 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:48,974 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:49,225 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:49,460 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:11:49,719 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:49,971 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:11:50,199 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:50,432 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:11:50,704 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:11:50,940 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:11:51,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:51,664 INFO L93 Difference]: Finished difference Result 2701 states and 3404 transitions. [2020-08-21 13:11:51,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 13:11:51,665 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-08-21 13:11:51,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:51,676 INFO L225 Difference]: With dead ends: 2701 [2020-08-21 13:11:51,676 INFO L226 Difference]: Without dead ends: 1789 [2020-08-21 13:11:51,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2020-08-21 13:11:51,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2020-08-21 13:11:52,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1687. [2020-08-21 13:11:52,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-08-21 13:11:52,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2019 transitions. [2020-08-21 13:11:52,013 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2019 transitions. Word has length 130 [2020-08-21 13:11:52,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:52,016 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2019 transitions. [2020-08-21 13:11:52,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 13:11:52,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2019 transitions. [2020-08-21 13:11:52,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-21 13:11:52,023 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:52,024 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:11:52,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 13:11:52,024 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:52,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:52,024 INFO L82 PathProgramCache]: Analyzing trace with hash 941448042, now seen corresponding path program 1 times [2020-08-21 13:11:52,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:52,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671030945] [2020-08-21 13:11:52,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,304 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:52,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:11:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:11:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:11:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:11:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:11:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 13:11:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 13:11:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:11:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 13:11:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-21 13:11:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-21 13:11:52,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671030945] [2020-08-21 13:11:52,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:11:52,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 13:11:52,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302103279] [2020-08-21 13:11:52,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 13:11:52,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:52,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 13:11:52,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:11:52,488 INFO L87 Difference]: Start difference. First operand 1687 states and 2019 transitions. Second operand 11 states. [2020-08-21 13:11:53,090 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:55,000 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:55,239 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:55,510 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:55,776 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:56,036 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:56,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:56,663 INFO L93 Difference]: Finished difference Result 1997 states and 2554 transitions. [2020-08-21 13:11:56,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-21 13:11:56,664 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 134 [2020-08-21 13:11:56,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:56,674 INFO L225 Difference]: With dead ends: 1997 [2020-08-21 13:11:56,675 INFO L226 Difference]: Without dead ends: 1994 [2020-08-21 13:11:56,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2020-08-21 13:11:56,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2020-08-21 13:11:56,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1687. [2020-08-21 13:11:56,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-08-21 13:11:56,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2009 transitions. [2020-08-21 13:11:56,965 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2009 transitions. Word has length 134 [2020-08-21 13:11:56,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:56,965 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2009 transitions. [2020-08-21 13:11:56,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 13:11:56,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2009 transitions. [2020-08-21 13:11:56,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-21 13:11:56,970 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:56,971 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:11:56,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 13:11:56,971 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:56,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:56,972 INFO L82 PathProgramCache]: Analyzing trace with hash 108116472, now seen corresponding path program 1 times [2020-08-21 13:11:56,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:56,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454463723] [2020-08-21 13:11:56,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:57,236 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:57,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:57,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:57,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:57,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:57,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:57,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:11:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:57,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:11:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:57,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:57,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:57,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:57,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:57,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:11:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:57,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:11:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:57,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:57,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 13:11:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:57,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 13:11:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:57,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:57,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:57,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:11:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:57,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:57,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 13:11:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:57,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-21 13:11:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:57,474 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 13:11:57,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454463723] [2020-08-21 13:11:57,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:11:57,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 13:11:57,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311109548] [2020-08-21 13:11:57,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:11:57,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:57,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:11:57,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:11:57,478 INFO L87 Difference]: Start difference. First operand 1687 states and 2009 transitions. Second operand 12 states. [2020-08-21 13:11:58,252 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:59,289 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:11:59,556 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:11:59,801 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:12:00,037 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:12:00,265 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:12:00,588 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:12:01,324 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:12:01,609 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:12:01,892 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:12:04,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:12:04,189 INFO L93 Difference]: Finished difference Result 4159 states and 5274 transitions. [2020-08-21 13:12:04,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 13:12:04,190 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 134 [2020-08-21 13:12:04,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:12:04,205 INFO L225 Difference]: With dead ends: 4159 [2020-08-21 13:12:04,206 INFO L226 Difference]: Without dead ends: 2806 [2020-08-21 13:12:04,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-21 13:12:04,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2020-08-21 13:12:04,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2479. [2020-08-21 13:12:04,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2020-08-21 13:12:04,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3004 transitions. [2020-08-21 13:12:04,648 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3004 transitions. Word has length 134 [2020-08-21 13:12:04,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:12:04,649 INFO L479 AbstractCegarLoop]: Abstraction has 2479 states and 3004 transitions. [2020-08-21 13:12:04,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:12:04,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3004 transitions. [2020-08-21 13:12:04,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-08-21 13:12:04,659 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:12:04,659 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:12:04,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 13:12:04,660 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:12:04,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:12:04,660 INFO L82 PathProgramCache]: Analyzing trace with hash -116138867, now seen corresponding path program 2 times [2020-08-21 13:12:04,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:12:04,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241789614] [2020-08-21 13:12:04,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:12:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 13:12:04,721 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 13:12:04,722 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 13:12:04,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 13:12:04,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:12:04 BoogieIcfgContainer [2020-08-21 13:12:04,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 13:12:04,759 INFO L168 Benchmark]: Toolchain (without parser) took 53663.77 ms. Allocated memory was 140.0 MB in the beginning and 829.4 MB in the end (delta: 689.4 MB). Free memory was 102.4 MB in the beginning and 472.7 MB in the end (delta: -370.2 MB). Peak memory consumption was 319.2 MB. Max. memory is 7.1 GB. [2020-08-21 13:12:04,760 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 13:12:04,761 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.10 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.2 MB in the beginning and 173.2 MB in the end (delta: -70.9 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2020-08-21 13:12:04,761 INFO L168 Benchmark]: Boogie Preprocessor took 124.58 ms. Allocated memory is still 203.4 MB. Free memory was 173.2 MB in the beginning and 168.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-21 13:12:04,762 INFO L168 Benchmark]: RCFGBuilder took 1208.79 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 168.9 MB in the beginning and 198.9 MB in the end (delta: -30.0 MB). Peak memory consumption was 84.5 MB. Max. memory is 7.1 GB. [2020-08-21 13:12:04,763 INFO L168 Benchmark]: TraceAbstraction took 51673.86 ms. Allocated memory was 237.0 MB in the beginning and 829.4 MB in the end (delta: 592.4 MB). Free memory was 198.9 MB in the beginning and 472.7 MB in the end (delta: -273.8 MB). Peak memory consumption was 318.7 MB. Max. memory is 7.1 GB. [2020-08-21 13:12:04,765 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 651.10 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.2 MB in the beginning and 173.2 MB in the end (delta: -70.9 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.58 ms. Allocated memory is still 203.4 MB. Free memory was 173.2 MB in the beginning and 168.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1208.79 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 168.9 MB in the beginning and 198.9 MB in the end (delta: -30.0 MB). Peak memory consumption was 84.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 51673.86 ms. Allocated memory was 237.0 MB in the beginning and 829.4 MB in the end (delta: 592.4 MB). Free memory was 198.9 MB in the beginning and 472.7 MB in the end (delta: -273.8 MB). Peak memory consumption was 318.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 722]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L524] int pumpRunning = 0; [L525] int systemActive = 1; [L728] int waterLevel = 1; [L729] int methaneLevelCritical = 0; [L822] int cleanupTimeShifts = 4; [L895] int retValue_acc ; [L896] int tmp ; [L900] FCALL select_helpers() [L901] FCALL select_features() [L902] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L902] RET, EXPR valid_product() [L902] tmp = valid_product() [L904] COND TRUE \read(tmp) [L906] FCALL setup() [L907] CALL runTest() [L889] CALL test() [L450] int splverifierCounter ; [L451] int tmp ; [L452] int tmp___0 ; [L453] int tmp___1 ; [L454] int tmp___2 ; [L457] splverifierCounter = 0 [L459] COND TRUE 1 [L461] COND TRUE splverifierCounter < 4 [L467] tmp = __VERIFIER_nondet_int() [L469] COND TRUE \read(tmp) [L471] CALL waterRise() [L746] COND TRUE waterLevel < 2 [L747] waterLevel = waterLevel + 1 [L471] RET waterRise() [L477] tmp___0 = __VERIFIER_nondet_int() [L479] COND FALSE !(\read(tmp___0)) [L487] tmp___2 = __VERIFIER_nondet_int() [L489] COND TRUE \read(tmp___2) [L504] CALL timeShift() [L532] COND FALSE !(\read(pumpRunning)) [L539] COND TRUE \read(systemActive) [L541] CALL processEnvironment() [L587] int tmp ; [L590] COND FALSE !(\read(pumpRunning)) [L605] CALL processEnvironment__wrappee__highWaterSensor() [L561] int tmp ; [L564] COND TRUE ! pumpRunning [L566] CALL, EXPR isHighWaterLevel() [L684] int retValue_acc ; [L685] int tmp ; [L686] int tmp___0 ; [L690] CALL, EXPR isHighWaterSensorDry() [L808] int retValue_acc ; [L811] COND FALSE !(waterLevel < 2) [L815] retValue_acc = 0 [L816] return (retValue_acc); [L690] RET, EXPR isHighWaterSensorDry() [L690] tmp = isHighWaterSensorDry() [L692] COND FALSE !(\read(tmp)) [L695] tmp___0 = 1 [L697] retValue_acc = tmp___0 [L698] return (retValue_acc); [L566] RET, EXPR isHighWaterLevel() [L566] tmp = isHighWaterLevel() [L568] COND TRUE \read(tmp) [L570] CALL activatePump() [L615] pumpRunning = 1 [L570] RET activatePump() [L605] RET processEnvironment__wrappee__highWaterSensor() [L541] RET processEnvironment() [L547] CALL __utac_acc__Specification4_spec__1() [L919] int tmp ; [L920] int tmp___0 ; [L924] CALL, EXPR getWaterLevel() [L799] int retValue_acc ; [L802] retValue_acc = waterLevel [L803] return (retValue_acc); [L924] RET, EXPR getWaterLevel() [L924] tmp = getWaterLevel() [L926] COND FALSE !(tmp == 0) [L547] RET __utac_acc__Specification4_spec__1() [L504] RET timeShift() [L459] COND TRUE 1 [L461] COND TRUE splverifierCounter < 4 [L467] tmp = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp)) [L477] tmp___0 = __VERIFIER_nondet_int() [L479] COND FALSE !(\read(tmp___0)) [L487] tmp___2 = __VERIFIER_nondet_int() [L489] COND TRUE \read(tmp___2) [L504] CALL timeShift() [L532] COND TRUE \read(pumpRunning) [L534] CALL lowerWaterLevel() [L734] COND TRUE waterLevel > 0 [L735] waterLevel = waterLevel - 1 [L534] RET lowerWaterLevel() [L539] COND TRUE \read(systemActive) [L541] CALL processEnvironment() [L587] int tmp ; [L590] COND TRUE \read(pumpRunning) [L592] CALL, EXPR isMethaneAlarm() [L628] int retValue_acc ; [L632] CALL, EXPR isMethaneLevelCritical() [L767] int retValue_acc ; [L770] retValue_acc = methaneLevelCritical [L771] return (retValue_acc); [L632] RET, EXPR isMethaneLevelCritical() [L632] retValue_acc = isMethaneLevelCritical() [L634] return (retValue_acc); [L592] RET, EXPR isMethaneAlarm() [L592] tmp = isMethaneAlarm() [L594] COND FALSE !(\read(tmp)) [L600] CALL processEnvironment__wrappee__highWaterSensor() [L561] int tmp ; [L564] COND FALSE !(! pumpRunning) [L579] FCALL processEnvironment__wrappee__base() [L600] RET processEnvironment__wrappee__highWaterSensor() [L541] RET processEnvironment() [L547] CALL __utac_acc__Specification4_spec__1() [L919] int tmp ; [L920] int tmp___0 ; [L924] CALL, EXPR getWaterLevel() [L799] int retValue_acc ; [L802] retValue_acc = waterLevel [L803] return (retValue_acc); [L924] RET, EXPR getWaterLevel() [L924] tmp = getWaterLevel() [L926] COND FALSE !(tmp == 0) [L547] RET __utac_acc__Specification4_spec__1() [L504] RET timeShift() [L459] COND TRUE 1 [L461] COND TRUE splverifierCounter < 4 [L467] tmp = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp)) [L477] tmp___0 = __VERIFIER_nondet_int() [L479] COND FALSE !(\read(tmp___0)) [L487] tmp___2 = __VERIFIER_nondet_int() [L489] COND TRUE \read(tmp___2) [L504] CALL timeShift() [L532] COND TRUE \read(pumpRunning) [L534] CALL lowerWaterLevel() [L734] COND TRUE waterLevel > 0 [L735] waterLevel = waterLevel - 1 [L534] RET lowerWaterLevel() [L539] COND TRUE \read(systemActive) [L541] CALL processEnvironment() [L587] int tmp ; [L590] COND TRUE \read(pumpRunning) [L592] CALL, EXPR isMethaneAlarm() [L628] int retValue_acc ; [L632] CALL, EXPR isMethaneLevelCritical() [L767] int retValue_acc ; [L770] retValue_acc = methaneLevelCritical [L771] return (retValue_acc); [L632] RET, EXPR isMethaneLevelCritical() [L632] retValue_acc = isMethaneLevelCritical() [L634] return (retValue_acc); [L592] RET, EXPR isMethaneAlarm() [L592] tmp = isMethaneAlarm() [L594] COND FALSE !(\read(tmp)) [L600] CALL processEnvironment__wrappee__highWaterSensor() [L561] int tmp ; [L564] COND FALSE !(! pumpRunning) [L579] FCALL processEnvironment__wrappee__base() [L600] RET processEnvironment__wrappee__highWaterSensor() [L541] RET processEnvironment() [L547] CALL __utac_acc__Specification4_spec__1() [L919] int tmp ; [L920] int tmp___0 ; [L924] CALL, EXPR getWaterLevel() [L799] int retValue_acc ; [L802] retValue_acc = waterLevel [L803] return (retValue_acc); [L924] RET, EXPR getWaterLevel() [L924] tmp = getWaterLevel() [L926] COND TRUE tmp == 0 [L928] CALL, EXPR isPumpRunning() [L639] int retValue_acc ; [L642] retValue_acc = pumpRunning [L643] return (retValue_acc); [L928] RET, EXPR isPumpRunning() [L928] tmp___0 = isPumpRunning() [L930] COND TRUE \read(tmp___0) [L932] CALL __automaton_fail() [L722] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 51.5s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 43.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1440 SDtfs, 3252 SDslu, 1778 SDs, 0 SdLazy, 10825 SolverSat, 2228 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 546 GetRequests, 355 SyntacticMatches, 7 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 18.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2479occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 1299 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 1189 NumberOfCodeBlocks, 1189 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 993 ConstructedInterpolants, 0 QuantifiedInterpolants, 354822 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 128/147 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...