/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_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:24:57,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:24:57,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:24:57,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:24:57,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:24:57,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:24:57,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:24:57,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:24:57,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:24:57,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:24:57,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:24:57,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:24:57,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:24:57,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:24:57,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:24:57,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:24:57,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:24:57,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:24:57,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:24:57,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:24:57,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:24:57,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:24:57,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:24:57,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:24:57,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:24:57,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:24:57,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:24:57,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:24:57,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:24:57,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:24:57,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:24:57,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:24:57,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:24:57,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:24:57,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:24:57,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:24:57,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:24:57,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:24:57,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:24:57,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:24:57,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:24:57,945 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 10:24:57,972 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:24:57,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:24:57,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:24:57,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:24:57,974 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:24:57,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:24:57,974 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:24:57,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:24:57,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:24:57,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:24:57,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:24:57,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:24:57,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:24:57,976 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:24:57,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:24:57,976 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:24:57,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:24:57,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:24:57,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:24:57,978 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:24:57,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:24:57,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:24:57,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:24:57,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:24:57,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:24:57,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:24:57,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:24:57,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:24:57,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:24:57,980 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 [2020-08-18 10:24:58,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:24:58,296 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:24:58,299 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:24:58,301 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:24:58,301 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:24:58,302 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2020-08-18 10:24:58,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ca0d8522/d4b722dd747544ef8832408dbd6df2b9/FLAGed8f2708b [2020-08-18 10:24:58,888 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:24:58,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2020-08-18 10:24:58,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ca0d8522/d4b722dd747544ef8832408dbd6df2b9/FLAGed8f2708b [2020-08-18 10:24:59,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ca0d8522/d4b722dd747544ef8832408dbd6df2b9 [2020-08-18 10:24:59,205 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:24:59,206 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:24:59,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:24:59,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:24:59,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:24:59,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:24:59" (1/1) ... [2020-08-18 10:24:59,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21046f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:59, skipping insertion in model container [2020-08-18 10:24:59,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:24:59" (1/1) ... [2020-08-18 10:24:59,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:24:59,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:24:59,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:24:59,716 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:24:59,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:24:59,906 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:24:59,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:59 WrapperNode [2020-08-18 10:24:59,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:24:59,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:24:59,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:24:59,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:24:59,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:59" (1/1) ... [2020-08-18 10:24:59,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:59" (1/1) ... [2020-08-18 10:24:59,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:59" (1/1) ... [2020-08-18 10:24:59,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:59" (1/1) ... [2020-08-18 10:24:59,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:59" (1/1) ... [2020-08-18 10:24:59,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:59" (1/1) ... [2020-08-18 10:24:59,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:59" (1/1) ... [2020-08-18 10:24:59,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:24:59,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:24:59,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:24:59,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:24:59,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:25:00,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:25:00,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:25:00,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:25:00,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:25:00,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:25:00,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:25:00,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:25:00,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:25:00,060 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:25:00,060 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 10:25:00,060 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:25:00,060 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:25:00,060 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:25:00,060 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:25:00,061 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:25:00,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:25:00,061 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:25:00,061 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:25:00,061 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:25:00,061 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:25:00,062 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:25:00,062 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:25:00,062 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:25:00,062 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:25:00,062 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:25:00,062 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:25:00,063 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 10:25:00,063 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 10:25:00,063 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:25:00,063 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 10:25:00,063 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:25:00,063 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:25:00,063 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:25:00,064 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:25:00,064 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:25:00,064 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:25:00,064 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:25:00,064 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 10:25:00,065 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 10:25:00,065 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 10:25:00,065 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:25:00,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:25:00,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:25:00,065 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:25:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:25:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:25:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:25:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:25:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:25:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:25:00,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:25:00,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:25:00,067 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:25:00,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:25:00,067 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:25:00,067 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:25:00,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:25:00,069 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:25:00,069 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:25:00,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:25:00,069 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:25:00,069 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:25:00,069 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:25:00,069 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:25:00,070 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 10:25:00,070 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:25:00,070 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:25:00,070 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:25:00,070 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:25:00,070 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:25:00,070 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:25:00,072 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:25:00,072 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:25:00,072 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:25:00,072 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:25:00,072 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:25:00,073 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:25:00,074 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:25:00,074 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:25:00,074 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:25:00,074 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:25:00,075 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:25:00,075 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 10:25:00,075 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 10:25:00,075 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:25:00,075 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:25:00,075 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 10:25:00,075 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:25:00,075 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 10:25:00,076 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 10:25:00,077 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:25:00,077 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 10:25:00,077 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:25:00,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:25:00,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:25:00,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:25:01,123 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:25:01,123 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:25:01,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:25:01 BoogieIcfgContainer [2020-08-18 10:25:01,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:25:01,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:25:01,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:25:01,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:25:01,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:24:59" (1/3) ... [2020-08-18 10:25:01,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41622e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:25:01, skipping insertion in model container [2020-08-18 10:25:01,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:59" (2/3) ... [2020-08-18 10:25:01,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41622e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:25:01, skipping insertion in model container [2020-08-18 10:25:01,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:25:01" (3/3) ... [2020-08-18 10:25:01,138 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product50.cil.c [2020-08-18 10:25:01,148 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:25:01,156 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:25:01,170 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:25:01,196 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:25:01,196 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:25:01,197 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:25:01,197 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:25:01,197 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:25:01,197 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:25:01,197 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:25:01,198 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:25:01,226 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-18 10:25:01,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 10:25:01,235 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:01,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:25:01,237 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:01,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:01,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1488722281, now seen corresponding path program 1 times [2020-08-18 10:25:01,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:01,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093693962] [2020-08-18 10:25:01,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,891 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:01,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:25:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:25:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:02,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:25:02,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093693962] [2020-08-18 10:25:02,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:25:02,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 10:25:02,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551183825] [2020-08-18 10:25:02,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 10:25:02,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:02,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 10:25:02,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:25:02,045 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 3 states. [2020-08-18 10:25:03,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:03,320 INFO L93 Difference]: Finished difference Result 306 states and 398 transitions. [2020-08-18 10:25:03,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 10:25:03,322 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 10:25:03,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:03,344 INFO L225 Difference]: With dead ends: 306 [2020-08-18 10:25:03,344 INFO L226 Difference]: Without dead ends: 165 [2020-08-18 10:25:03,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:25:03,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-18 10:25:03,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-08-18 10:25:03,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-18 10:25:03,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2020-08-18 10:25:03,440 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 46 [2020-08-18 10:25:03,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:03,441 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2020-08-18 10:25:03,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 10:25:03,441 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2020-08-18 10:25:03,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 10:25:03,445 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:03,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:25:03,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:25:03,446 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:03,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:03,446 INFO L82 PathProgramCache]: Analyzing trace with hash 469599371, now seen corresponding path program 1 times [2020-08-18 10:25:03,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:03,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352595212] [2020-08-18 10:25:03,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,798 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:03,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:25:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:25:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:03,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:25:03,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352595212] [2020-08-18 10:25:03,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:25:03,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:25:03,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873553130] [2020-08-18 10:25:03,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:25:03,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:03,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:25:03,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:25:03,883 INFO L87 Difference]: Start difference. First operand 132 states and 154 transitions. Second operand 4 states. [2020-08-18 10:25:04,289 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:05,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:05,176 INFO L93 Difference]: Finished difference Result 235 states and 285 transitions. [2020-08-18 10:25:05,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 10:25:05,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 10:25:05,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:05,181 INFO L225 Difference]: With dead ends: 235 [2020-08-18 10:25:05,181 INFO L226 Difference]: Without dead ends: 149 [2020-08-18 10:25:05,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 10:25:05,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-18 10:25:05,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-18 10:25:05,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-18 10:25:05,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-08-18 10:25:05,218 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 47 [2020-08-18 10:25:05,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:05,218 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-08-18 10:25:05,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:25:05,219 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-08-18 10:25:05,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 10:25:05,221 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:05,221 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] [2020-08-18 10:25:05,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:25:05,221 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:05,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:05,222 INFO L82 PathProgramCache]: Analyzing trace with hash 305445596, now seen corresponding path program 1 times [2020-08-18 10:25:05,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:05,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901392486] [2020-08-18 10:25:05,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,580 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:05,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:25:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:25:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:05,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:25:05,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901392486] [2020-08-18 10:25:05,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:25:05,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:25:05,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349559314] [2020-08-18 10:25:05,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:25:05,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:05,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:25:05,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:25:05,662 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 8 states. [2020-08-18 10:25:06,016 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:06,357 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:06,636 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:06,880 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:08,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:08,119 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2020-08-18 10:25:08,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 10:25:08,123 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 10:25:08,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:08,128 INFO L225 Difference]: With dead ends: 248 [2020-08-18 10:25:08,128 INFO L226 Difference]: Without dead ends: 149 [2020-08-18 10:25:08,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:25:08,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-18 10:25:08,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 123. [2020-08-18 10:25:08,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-18 10:25:08,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2020-08-18 10:25:08,179 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 52 [2020-08-18 10:25:08,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:08,179 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2020-08-18 10:25:08,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:25:08,179 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2020-08-18 10:25:08,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 10:25:08,182 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:08,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:25:08,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:25:08,183 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:08,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:08,183 INFO L82 PathProgramCache]: Analyzing trace with hash 892474279, now seen corresponding path program 1 times [2020-08-18 10:25:08,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:08,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186015361] [2020-08-18 10:25:08,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:08,515 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:08,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:08,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:08,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:08,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:08,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:08,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:08,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:25:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:08,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:08,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:08,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 10:25:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:08,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 10:25:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:08,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:25:08,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186015361] [2020-08-18 10:25:08,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:25:08,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 10:25:08,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884347226] [2020-08-18 10:25:08,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 10:25:08,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:08,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 10:25:08,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 10:25:08,637 INFO L87 Difference]: Start difference. First operand 123 states and 141 transitions. Second operand 6 states. [2020-08-18 10:25:09,019 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:10,147 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:10,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:10,825 INFO L93 Difference]: Finished difference Result 345 states and 425 transitions. [2020-08-18 10:25:10,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:25:10,830 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-18 10:25:10,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:10,833 INFO L225 Difference]: With dead ends: 345 [2020-08-18 10:25:10,833 INFO L226 Difference]: Without dead ends: 246 [2020-08-18 10:25:10,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 10:25:10,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-18 10:25:10,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 203. [2020-08-18 10:25:10,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-08-18 10:25:10,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 230 transitions. [2020-08-18 10:25:10,888 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 230 transitions. Word has length 65 [2020-08-18 10:25:10,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:10,889 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 230 transitions. [2020-08-18 10:25:10,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 10:25:10,889 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 230 transitions. [2020-08-18 10:25:10,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 10:25:10,891 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:10,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:25:10,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:25:10,892 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:10,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:10,892 INFO L82 PathProgramCache]: Analyzing trace with hash 861206730, now seen corresponding path program 1 times [2020-08-18 10:25:10,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:10,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857270628] [2020-08-18 10:25:10,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:11,238 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:11,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:11,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:11,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:11,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:11,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:11,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:25:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:11,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:11,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:11,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:11,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:11,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 10:25:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:11,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 10:25:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:11,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:25:11,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857270628] [2020-08-18 10:25:11,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:25:11,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 10:25:11,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115180730] [2020-08-18 10:25:11,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:25:11,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:11,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:25:11,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:25:11,348 INFO L87 Difference]: Start difference. First operand 203 states and 230 transitions. Second operand 12 states. [2020-08-18 10:25:11,784 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:12,089 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:12,333 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:12,579 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:13,097 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:13,971 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:14,300 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:14,546 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:14,780 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:15,051 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:15,301 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:16,626 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:16,969 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:17,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:17,615 INFO L93 Difference]: Finished difference Result 713 states and 919 transitions. [2020-08-18 10:25:17,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 10:25:17,616 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-18 10:25:17,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:17,623 INFO L225 Difference]: With dead ends: 713 [2020-08-18 10:25:17,623 INFO L226 Difference]: Without dead ends: 534 [2020-08-18 10:25:17,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 10:25:17,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-08-18 10:25:17,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 472. [2020-08-18 10:25:17,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-08-18 10:25:17,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 553 transitions. [2020-08-18 10:25:17,741 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 553 transitions. Word has length 79 [2020-08-18 10:25:17,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:17,741 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 553 transitions. [2020-08-18 10:25:17,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:25:17,741 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 553 transitions. [2020-08-18 10:25:17,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-18 10:25:17,746 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:17,746 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, 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] [2020-08-18 10:25:17,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:25:17,747 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:17,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:17,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1327678130, now seen corresponding path program 1 times [2020-08-18 10:25:17,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:17,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232538478] [2020-08-18 10:25:17,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,025 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:18,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:25:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:25:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:25:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 10:25:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 10:25:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 10:25:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:25:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 10:25:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-18 10:25:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:18,289 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-18 10:25:18,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232538478] [2020-08-18 10:25:18,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:18,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 10:25:18,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250986828] [2020-08-18 10:25:18,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 10:25:18,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:18,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 10:25:18,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 10:25:18,295 INFO L87 Difference]: Start difference. First operand 472 states and 553 transitions. Second operand 13 states. [2020-08-18 10:25:18,731 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:19,332 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:19,878 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:20,142 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 10:25:20,415 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:20,662 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:20,943 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:21,209 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 10:25:21,491 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:21,772 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:23,260 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:23,496 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:25:23,734 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:23,964 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:24,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:24,422 INFO L93 Difference]: Finished difference Result 957 states and 1212 transitions. [2020-08-18 10:25:24,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 10:25:24,423 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 138 [2020-08-18 10:25:24,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:24,429 INFO L225 Difference]: With dead ends: 957 [2020-08-18 10:25:24,429 INFO L226 Difference]: Without dead ends: 509 [2020-08-18 10:25:24,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-18 10:25:24,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-08-18 10:25:24,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 442. [2020-08-18 10:25:24,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-08-18 10:25:24,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 521 transitions. [2020-08-18 10:25:24,519 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 521 transitions. Word has length 138 [2020-08-18 10:25:24,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:24,520 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 521 transitions. [2020-08-18 10:25:24,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 10:25:24,520 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 521 transitions. [2020-08-18 10:25:24,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-18 10:25:24,523 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:24,523 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] [2020-08-18 10:25:24,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:25:24,523 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:24,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:24,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1681399932, now seen corresponding path program 1 times [2020-08-18 10:25:24,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:24,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643103715] [2020-08-18 10:25:24,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:24,831 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:24,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:24,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:24,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:24,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:24,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:24,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:25:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:24,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:24,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:24,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:24,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:25:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 10:25:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 10:25:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:25:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 10:25:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 10:25:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:25,101 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 10:25:25,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643103715] [2020-08-18 10:25:25,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:25,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 10:25:25,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531307746] [2020-08-18 10:25:25,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:25:25,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:25,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:25:25,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:25:25,105 INFO L87 Difference]: Start difference. First operand 442 states and 521 transitions. Second operand 12 states. [2020-08-18 10:25:25,672 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:25,911 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:26,135 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:26,719 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:26,964 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:27,185 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:28,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:28,058 INFO L93 Difference]: Finished difference Result 807 states and 985 transitions. [2020-08-18 10:25:28,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 10:25:28,058 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-18 10:25:28,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:28,061 INFO L225 Difference]: With dead ends: 807 [2020-08-18 10:25:28,062 INFO L226 Difference]: Without dead ends: 389 [2020-08-18 10:25:28,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 10:25:28,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-08-18 10:25:28,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 363. [2020-08-18 10:25:28,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-08-18 10:25:28,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 425 transitions. [2020-08-18 10:25:28,129 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 425 transitions. Word has length 130 [2020-08-18 10:25:28,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:28,130 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 425 transitions. [2020-08-18 10:25:28,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:25:28,130 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 425 transitions. [2020-08-18 10:25:28,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 10:25:28,132 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:28,132 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:25:28,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 10:25:28,133 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:28,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:28,133 INFO L82 PathProgramCache]: Analyzing trace with hash 34208085, now seen corresponding path program 1 times [2020-08-18 10:25:28,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:28,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478783306] [2020-08-18 10:25:28,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:28,390 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:28,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:28,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:28,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:28,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:28,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:28,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:25:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:28,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:25:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:28,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:28,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:28,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:28,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:28,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:28,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:25:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:28,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:28,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 10:25:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:28,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 10:25:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:28,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:28,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:28,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:25:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:28,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 10:25:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:28,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-18 10:25:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:28,534 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-18 10:25:28,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478783306] [2020-08-18 10:25:28,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:28,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 10:25:28,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995744204] [2020-08-18 10:25:28,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:25:28,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:28,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:25:28,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:25:28,536 INFO L87 Difference]: Start difference. First operand 363 states and 425 transitions. Second operand 10 states. [2020-08-18 10:25:30,301 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:30,531 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:30,787 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:31,027 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:31,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:31,389 INFO L93 Difference]: Finished difference Result 670 states and 812 transitions. [2020-08-18 10:25:31,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:25:31,390 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-18 10:25:31,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:31,394 INFO L225 Difference]: With dead ends: 670 [2020-08-18 10:25:31,394 INFO L226 Difference]: Without dead ends: 394 [2020-08-18 10:25:31,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:25:31,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-08-18 10:25:31,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 368. [2020-08-18 10:25:31,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-08-18 10:25:31,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 430 transitions. [2020-08-18 10:25:31,471 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 430 transitions. Word has length 134 [2020-08-18 10:25:31,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:31,471 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 430 transitions. [2020-08-18 10:25:31,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:25:31,472 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 430 transitions. [2020-08-18 10:25:31,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 10:25:31,476 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:31,476 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:25:31,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 10:25:31,477 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:31,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:31,477 INFO L82 PathProgramCache]: Analyzing trace with hash -475265005, now seen corresponding path program 1 times [2020-08-18 10:25:31,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:31,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230057237] [2020-08-18 10:25:31,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:31,758 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:31,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:31,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:31,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:31,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:31,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:31,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:25:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:31,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:25:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:31,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:31,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:31,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:31,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:31,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:31,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:25:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:31,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:31,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 10:25:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:31,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 10:25:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:31,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:31,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:31,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:25:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:31,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 10:25:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:31,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-18 10:25:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:31,911 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-18 10:25:31,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230057237] [2020-08-18 10:25:31,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:31,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 10:25:31,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805724372] [2020-08-18 10:25:31,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:25:31,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:31,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:25:31,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:25:31,913 INFO L87 Difference]: Start difference. First operand 368 states and 430 transitions. Second operand 10 states. [2020-08-18 10:25:32,327 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:33,910 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:34,166 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:34,458 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:34,741 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:35,004 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:35,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:35,351 INFO L93 Difference]: Finished difference Result 401 states and 482 transitions. [2020-08-18 10:25:35,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 10:25:35,351 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-18 10:25:35,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:35,355 INFO L225 Difference]: With dead ends: 401 [2020-08-18 10:25:35,355 INFO L226 Difference]: Without dead ends: 398 [2020-08-18 10:25:35,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 10:25:35,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-08-18 10:25:35,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 368. [2020-08-18 10:25:35,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-08-18 10:25:35,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 429 transitions. [2020-08-18 10:25:35,432 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 429 transitions. Word has length 134 [2020-08-18 10:25:35,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:35,432 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 429 transitions. [2020-08-18 10:25:35,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:25:35,433 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 429 transitions. [2020-08-18 10:25:35,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-18 10:25:35,434 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:35,435 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, 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] [2020-08-18 10:25:35,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 10:25:35,435 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:35,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:35,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1918338429, now seen corresponding path program 1 times [2020-08-18 10:25:35,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:35,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108974632] [2020-08-18 10:25:35,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,741 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:35,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:25:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:25:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:25:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 10:25:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 10:25:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:25:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 10:25:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-18 10:25:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:35,918 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 10:25:35,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108974632] [2020-08-18 10:25:35,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:35,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 10:25:35,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577493129] [2020-08-18 10:25:35,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:25:35,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:35,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:25:35,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:25:35,921 INFO L87 Difference]: Start difference. First operand 368 states and 429 transitions. Second operand 12 states. [2020-08-18 10:25:36,347 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:37,119 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:37,645 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:37,913 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:38,166 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:38,409 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:38,677 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:38,917 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:40,383 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:40,619 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:41,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:41,263 INFO L93 Difference]: Finished difference Result 881 states and 1104 transitions. [2020-08-18 10:25:41,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 10:25:41,264 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 138 [2020-08-18 10:25:41,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:41,269 INFO L225 Difference]: With dead ends: 881 [2020-08-18 10:25:41,269 INFO L226 Difference]: Without dead ends: 600 [2020-08-18 10:25:41,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-18 10:25:41,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-08-18 10:25:41,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 513. [2020-08-18 10:25:41,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-08-18 10:25:41,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 606 transitions. [2020-08-18 10:25:41,376 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 606 transitions. Word has length 138 [2020-08-18 10:25:41,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:41,377 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 606 transitions. [2020-08-18 10:25:41,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:25:41,378 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 606 transitions. [2020-08-18 10:25:41,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-08-18 10:25:41,384 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:41,384 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, 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, 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] [2020-08-18 10:25:41,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 10:25:41,385 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:41,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:41,386 INFO L82 PathProgramCache]: Analyzing trace with hash -169355685, now seen corresponding path program 2 times [2020-08-18 10:25:41,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:41,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195117963] [2020-08-18 10:25:41,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,787 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:41,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:41,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:25:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:25:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:25:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 10:25:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:25:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:25:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-18 10:25:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-18 10:25:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-08-18 10:25:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:25:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-18 10:25:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:41,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-18 10:25:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:42,043 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 39 proven. 22 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-08-18 10:25:42,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195117963] [2020-08-18 10:25:42,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:42,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 10:25:42,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887790845] [2020-08-18 10:25:42,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 10:25:42,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:42,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 10:25:42,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:25:42,045 INFO L87 Difference]: Start difference. First operand 513 states and 606 transitions. Second operand 14 states. [2020-08-18 10:25:42,526 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:43,145 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:43,999 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:44,276 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:44,505 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:44,738 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:45,005 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:45,232 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:46,423 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:46,676 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:47,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:47,828 INFO L93 Difference]: Finished difference Result 1240 states and 1606 transitions. [2020-08-18 10:25:47,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 10:25:47,829 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 196 [2020-08-18 10:25:47,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:47,834 INFO L225 Difference]: With dead ends: 1240 [2020-08-18 10:25:47,835 INFO L226 Difference]: Without dead ends: 814 [2020-08-18 10:25:47,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2020-08-18 10:25:47,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2020-08-18 10:25:47,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 511. [2020-08-18 10:25:47,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-08-18 10:25:47,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 603 transitions. [2020-08-18 10:25:47,934 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 603 transitions. Word has length 196 [2020-08-18 10:25:47,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:47,935 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 603 transitions. [2020-08-18 10:25:47,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 10:25:47,935 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 603 transitions. [2020-08-18 10:25:47,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-18 10:25:47,938 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:47,938 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:25:47,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 10:25:47,938 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:47,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:47,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1150491295, now seen corresponding path program 3 times [2020-08-18 10:25:47,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:47,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32898772] [2020-08-18 10:25:47,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,273 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:48,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:25:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:25:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:48,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:25:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 10:25:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:25:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:25:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 10:25:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 10:25:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:48,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:25:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-18 10:25:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 10:25:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:48,601 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-18 10:25:48,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32898772] [2020-08-18 10:25:48,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:48,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 10:25:48,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764341724] [2020-08-18 10:25:48,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 10:25:48,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:48,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 10:25:48,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-18 10:25:48,603 INFO L87 Difference]: Start difference. First operand 511 states and 603 transitions. Second operand 13 states. [2020-08-18 10:25:49,495 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:49,756 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:51,217 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 10:25:51,461 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:51,689 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:52,108 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-18 10:25:53,753 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-18 10:25:54,021 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 10:25:54,326 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:25:54,583 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:25:55,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:55,571 INFO L93 Difference]: Finished difference Result 1408 states and 1753 transitions. [2020-08-18 10:25:55,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-18 10:25:55,572 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 192 [2020-08-18 10:25:55,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:55,578 INFO L225 Difference]: With dead ends: 1408 [2020-08-18 10:25:55,579 INFO L226 Difference]: Without dead ends: 982 [2020-08-18 10:25:55,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 74 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=299, Invalid=961, Unknown=0, NotChecked=0, Total=1260 [2020-08-18 10:25:55,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2020-08-18 10:25:55,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 833. [2020-08-18 10:25:55,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833 states. [2020-08-18 10:25:55,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 968 transitions. [2020-08-18 10:25:55,743 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 968 transitions. Word has length 192 [2020-08-18 10:25:55,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:55,744 INFO L479 AbstractCegarLoop]: Abstraction has 833 states and 968 transitions. [2020-08-18 10:25:55,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 10:25:55,744 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 968 transitions. [2020-08-18 10:25:55,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-18 10:25:55,747 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:55,747 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, 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, 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] [2020-08-18 10:25:55,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 10:25:55,748 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:55,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:55,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1185901215, now seen corresponding path program 1 times [2020-08-18 10:25:55,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:55,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400368434] [2020-08-18 10:25:55,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,014 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:56,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:25:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:25:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:25:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 10:25:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:25:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:25:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 10:25:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 10:25:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 10:25:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-18 10:25:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 10:25:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:56,240 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 8 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-08-18 10:25:56,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400368434] [2020-08-18 10:25:56,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:56,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 10:25:56,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987811229] [2020-08-18 10:25:56,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 10:25:56,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:56,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 10:25:56,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 10:25:56,242 INFO L87 Difference]: Start difference. First operand 833 states and 968 transitions. Second operand 13 states. [2020-08-18 10:25:56,704 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:56,970 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:57,193 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187