/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 12:03:57,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:03:57,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:03:57,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:03:57,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:03:57,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:03:57,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:03:57,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:03:57,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:03:57,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:03:57,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:03:57,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:03:57,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:03:57,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:03:57,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:03:57,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:03:57,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:03:57,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:03:57,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:03:57,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:03:57,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:03:57,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:03:57,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:03:57,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:03:57,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 12:03:57,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 12:03:57,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 12:03:57,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 12:03:57,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 12:03:57,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 12:03:57,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 12:03:57,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 12:03:57,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 12:03:57,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 12:03:57,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 12:03:57,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 12:03:57,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 12:03:57,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 12:03:57,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:03:57,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:03:57,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:03:57,888 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 12:03:57,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:03:57,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:03:57,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:03:57,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:03:57,912 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:03:57,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:03:57,913 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 12:03:57,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:03:57,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 12:03:57,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:03:57,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:03:57,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:03:57,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:03:57,914 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 12:03:57,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:03:57,914 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:03:57,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:03:57,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:03:57,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:03:57,915 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:03:57,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:03:57,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:03:57,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:03:57,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:03:57,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:03:57,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:03:57,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:03:57,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:03:57,917 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:03:57,917 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 12:03:58,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:03:58,258 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:03:58,263 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:03:58,264 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:03:58,264 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:03:58,265 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product50.cil.c [2020-08-18 12:03:58,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/760b76237/2ffa8f7c2286498496cc4c7240647558/FLAGeb8acd7ba [2020-08-18 12:03:58,908 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:03:58,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product50.cil.c [2020-08-18 12:03:58,924 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/760b76237/2ffa8f7c2286498496cc4c7240647558/FLAGeb8acd7ba [2020-08-18 12:03:59,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/760b76237/2ffa8f7c2286498496cc4c7240647558 [2020-08-18 12:03:59,264 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:03:59,266 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:03:59,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:03:59,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:03:59,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:03:59,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:03:59" (1/1) ... [2020-08-18 12:03:59,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53fd2f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:59, skipping insertion in model container [2020-08-18 12:03:59,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:03:59" (1/1) ... [2020-08-18 12:03:59,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:03:59,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:03:59,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:03:59,780 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:03:59,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:03:59,923 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:03:59,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:59 WrapperNode [2020-08-18 12:03:59,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:03:59,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:03:59,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:03:59,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:03:59,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:59" (1/1) ... [2020-08-18 12:03:59,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:59" (1/1) ... [2020-08-18 12:03:59,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:59" (1/1) ... [2020-08-18 12:03:59,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:59" (1/1) ... [2020-08-18 12:03:59,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:59" (1/1) ... [2020-08-18 12:03:59,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:59" (1/1) ... [2020-08-18 12:04:00,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:59" (1/1) ... [2020-08-18 12:04:00,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:04:00,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:04:00,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:04:00,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:04:00,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:59" (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 12:04:00,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:04:00,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:04:00,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 12:04:00,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 12:04:00,078 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 12:04:00,078 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 12:04:00,078 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 12:04:00,078 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 12:04:00,078 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 12:04:00,078 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 12:04:00,079 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 12:04:00,079 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 12:04:00,079 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 12:04:00,079 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 12:04:00,079 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 12:04:00,079 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 12:04:00,080 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 12:04:00,080 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 12:04:00,080 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 12:04:00,080 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 12:04:00,080 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 12:04:00,080 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 12:04:00,080 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 12:04:00,081 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 12:04:00,081 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 12:04:00,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 12:04:00,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 12:04:00,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 12:04:00,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 12:04:00,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 12:04:00,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 12:04:00,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 12:04:00,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 12:04:00,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 12:04:00,082 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 12:04:00,082 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 12:04:00,083 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 12:04:00,083 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 12:04:00,083 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 12:04:00,083 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 12:04:00,083 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 12:04:00,083 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 12:04:00,083 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:04:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:04:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 12:04:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 12:04:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 12:04:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 12:04:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 12:04:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 12:04:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 12:04:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 12:04:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 12:04:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 12:04:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 12:04:00,085 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 12:04:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 12:04:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 12:04:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 12:04:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 12:04:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 12:04:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 12:04:00,086 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 12:04:00,087 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 12:04:00,087 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 12:04:00,087 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 12:04:00,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 12:04:00,087 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 12:04:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 12:04:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 12:04:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 12:04:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 12:04:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 12:04:00,088 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 12:04:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 12:04:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 12:04:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 12:04:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 12:04:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 12:04:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 12:04:00,089 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 12:04:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 12:04:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 12:04:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 12:04:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 12:04:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 12:04:00,090 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 12:04:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 12:04:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 12:04:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 12:04:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 12:04:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 12:04:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 12:04:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 12:04:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 12:04:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 12:04:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:04:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:04:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 12:04:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:04:01,184 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:04:01,184 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 12:04:01,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:04:01 BoogieIcfgContainer [2020-08-18 12:04:01,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:04:01,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:04:01,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:04:01,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:04:01,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:03:59" (1/3) ... [2020-08-18 12:04:01,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31605934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:04:01, skipping insertion in model container [2020-08-18 12:04:01,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:59" (2/3) ... [2020-08-18 12:04:01,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31605934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:04:01, skipping insertion in model container [2020-08-18 12:04:01,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:04:01" (3/3) ... [2020-08-18 12:04:01,206 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product50.cil.c [2020-08-18 12:04:01,215 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:04:01,224 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 12:04:01,236 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 12:04:01,258 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:04:01,258 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:04:01,258 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:04:01,258 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:04:01,259 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:04:01,259 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:04:01,259 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:04:01,259 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:04:01,281 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states. [2020-08-18 12:04:01,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 12:04:01,291 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:01,292 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 12:04:01,293 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:01,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:01,299 INFO L82 PathProgramCache]: Analyzing trace with hash 2053229239, now seen corresponding path program 1 times [2020-08-18 12:04:01,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:01,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626450734] [2020-08-18 12:04:01,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:01,982 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:01,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:04:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 12:04:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:04:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:02,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:04:02,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626450734] [2020-08-18 12:04:02,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:04:02,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 12:04:02,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274432549] [2020-08-18 12:04:02,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 12:04:02,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:02,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 12:04:02,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:04:02,160 INFO L87 Difference]: Start difference. First operand 185 states. Second operand 4 states. [2020-08-18 12:04:03,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:04:03,305 INFO L93 Difference]: Finished difference Result 313 states and 401 transitions. [2020-08-18 12:04:03,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 12:04:03,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 12:04:03,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:04:03,326 INFO L225 Difference]: With dead ends: 313 [2020-08-18 12:04:03,326 INFO L226 Difference]: Without dead ends: 172 [2020-08-18 12:04:03,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:04:03,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-18 12:04:03,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 142. [2020-08-18 12:04:03,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-08-18 12:04:03,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 166 transitions. [2020-08-18 12:04:03,457 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 166 transitions. Word has length 59 [2020-08-18 12:04:03,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:04:03,459 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 166 transitions. [2020-08-18 12:04:03,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 12:04:03,459 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 166 transitions. [2020-08-18 12:04:03,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 12:04:03,473 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:03,474 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 12:04:03,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:04:03,475 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:03,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:03,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1701396789, now seen corresponding path program 1 times [2020-08-18 12:04:03,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:03,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507120635] [2020-08-18 12:04:03,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:03,864 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:03,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:03,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:03,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:03,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:03,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:03,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:03,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 12:04:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:03,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:03,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 12:04:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:03,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 12:04:03,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:03,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:04:03,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507120635] [2020-08-18 12:04:03,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:04:03,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:04:03,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140499705] [2020-08-18 12:04:03,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:04:03,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:03,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:04:03,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:04:03,927 INFO L87 Difference]: Start difference. First operand 142 states and 166 transitions. Second operand 5 states. [2020-08-18 12:04:04,433 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:05,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:04:05,325 INFO L93 Difference]: Finished difference Result 254 states and 309 transitions. [2020-08-18 12:04:05,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 12:04:05,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 12:04:05,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:04:05,330 INFO L225 Difference]: With dead ends: 254 [2020-08-18 12:04:05,330 INFO L226 Difference]: Without dead ends: 162 [2020-08-18 12:04:05,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:04:05,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-18 12:04:05,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 133. [2020-08-18 12:04:05,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-18 12:04:05,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 154 transitions. [2020-08-18 12:04:05,376 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 154 transitions. Word has length 60 [2020-08-18 12:04:05,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:04:05,376 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 154 transitions. [2020-08-18 12:04:05,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:04:05,376 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 154 transitions. [2020-08-18 12:04:05,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 12:04:05,378 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:05,378 INFO L422 BasicCegarLoop]: trace histogram [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 12:04:05,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:04:05,379 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:05,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:05,379 INFO L82 PathProgramCache]: Analyzing trace with hash -835538636, now seen corresponding path program 1 times [2020-08-18 12:04:05,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:05,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508501315] [2020-08-18 12:04:05,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:05,731 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:05,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:05,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:05,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:05,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:05,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:05,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:05,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:04:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:05,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:05,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:04:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:05,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 12:04:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:05,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:04:05,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508501315] [2020-08-18 12:04:05,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:04:05,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:04:05,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910291069] [2020-08-18 12:04:05,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:04:05,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:05,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:04:05,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:04:05,876 INFO L87 Difference]: Start difference. First operand 133 states and 154 transitions. Second operand 9 states. [2020-08-18 12:04:06,277 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:06,605 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:06,882 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:07,150 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:08,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:04:08,436 INFO L93 Difference]: Finished difference Result 267 states and 328 transitions. [2020-08-18 12:04:08,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 12:04:08,439 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-18 12:04:08,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:04:08,442 INFO L225 Difference]: With dead ends: 267 [2020-08-18 12:04:08,442 INFO L226 Difference]: Without dead ends: 162 [2020-08-18 12:04:08,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 12:04:08,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-18 12:04:08,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 133. [2020-08-18 12:04:08,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-18 12:04:08,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 153 transitions. [2020-08-18 12:04:08,481 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 153 transitions. Word has length 65 [2020-08-18 12:04:08,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:04:08,481 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 153 transitions. [2020-08-18 12:04:08,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:04:08,481 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 153 transitions. [2020-08-18 12:04:08,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 12:04:08,483 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:08,483 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 12:04:08,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 12:04:08,484 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:08,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:08,484 INFO L82 PathProgramCache]: Analyzing trace with hash -192684169, now seen corresponding path program 1 times [2020-08-18 12:04:08,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:08,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95425997] [2020-08-18 12:04:08,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:08,858 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:08,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:08,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:08,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:08,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:08,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:08,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:08,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:04:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:08,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:08,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 12:04:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:08,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:08,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:08,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 12:04:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:08,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 12:04:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:08,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:04:08,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95425997] [2020-08-18 12:04:08,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:04:08,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 12:04:08,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059185077] [2020-08-18 12:04:08,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 12:04:08,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:08,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 12:04:08,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:04:08,959 INFO L87 Difference]: Start difference. First operand 133 states and 153 transitions. Second operand 7 states. [2020-08-18 12:04:09,338 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:10,799 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:11,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:04:11,356 INFO L93 Difference]: Finished difference Result 371 states and 462 transitions. [2020-08-18 12:04:11,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 12:04:11,356 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-08-18 12:04:11,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:04:11,360 INFO L225 Difference]: With dead ends: 371 [2020-08-18 12:04:11,361 INFO L226 Difference]: Without dead ends: 266 [2020-08-18 12:04:11,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 12:04:11,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-08-18 12:04:11,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 220. [2020-08-18 12:04:11,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-18 12:04:11,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 252 transitions. [2020-08-18 12:04:11,410 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 252 transitions. Word has length 78 [2020-08-18 12:04:11,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:04:11,410 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 252 transitions. [2020-08-18 12:04:11,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 12:04:11,410 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 252 transitions. [2020-08-18 12:04:11,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 12:04:11,412 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:11,412 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 12:04:11,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 12:04:11,412 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:11,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:11,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1827957124, now seen corresponding path program 1 times [2020-08-18 12:04:11,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:11,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701380158] [2020-08-18 12:04:11,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:11,675 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:11,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:11,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:11,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:11,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:11,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:11,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:11,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:04:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:11,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:11,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 12:04:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:11,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:11,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:11,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:11,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:04:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:11,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 12:04:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:11,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 12:04:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:04:11,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701380158] [2020-08-18 12:04:11,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:04:11,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 12:04:11,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944780704] [2020-08-18 12:04:11,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 12:04:11,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:11,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 12:04:11,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 12:04:11,861 INFO L87 Difference]: Start difference. First operand 220 states and 252 transitions. Second operand 12 states. [2020-08-18 12:04:12,479 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:12,762 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:12,984 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:13,763 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:14,011 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:04:14,277 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:14,529 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:15,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:04:15,403 INFO L93 Difference]: Finished difference Result 457 states and 556 transitions. [2020-08-18 12:04:15,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 12:04:15,404 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 92 [2020-08-18 12:04:15,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:04:15,406 INFO L225 Difference]: With dead ends: 457 [2020-08-18 12:04:15,406 INFO L226 Difference]: Without dead ends: 265 [2020-08-18 12:04:15,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-18 12:04:15,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-08-18 12:04:15,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 225. [2020-08-18 12:04:15,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-08-18 12:04:15,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 257 transitions. [2020-08-18 12:04:15,459 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 257 transitions. Word has length 92 [2020-08-18 12:04:15,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:04:15,459 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 257 transitions. [2020-08-18 12:04:15,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 12:04:15,459 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 257 transitions. [2020-08-18 12:04:15,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 12:04:15,461 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:15,461 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 12:04:15,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 12:04:15,461 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:15,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:15,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1850589378, now seen corresponding path program 1 times [2020-08-18 12:04:15,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:15,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452747915] [2020-08-18 12:04:15,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:15,743 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:15,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:15,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:15,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:15,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:15,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:15,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:15,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:04:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:15,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:15,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 12:04:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:15,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:15,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:15,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:15,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:04:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:15,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 12:04:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:15,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 12:04:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:15,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 12:04:15,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452747915] [2020-08-18 12:04:15,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:04:15,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:04:15,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356448522] [2020-08-18 12:04:15,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:04:15,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:15,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:04:15,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:04:15,892 INFO L87 Difference]: Start difference. First operand 225 states and 257 transitions. Second operand 9 states. [2020-08-18 12:04:16,297 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:16,974 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:17,616 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:17,928 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:18,349 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:18,551 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:19,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:04:19,093 INFO L93 Difference]: Finished difference Result 467 states and 566 transitions. [2020-08-18 12:04:19,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 12:04:19,093 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-18 12:04:19,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:04:19,097 INFO L225 Difference]: With dead ends: 467 [2020-08-18 12:04:19,097 INFO L226 Difference]: Without dead ends: 270 [2020-08-18 12:04:19,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 12:04:19,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-08-18 12:04:19,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 224. [2020-08-18 12:04:19,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-08-18 12:04:19,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 254 transitions. [2020-08-18 12:04:19,141 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 254 transitions. Word has length 92 [2020-08-18 12:04:19,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:04:19,141 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 254 transitions. [2020-08-18 12:04:19,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:04:19,141 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 254 transitions. [2020-08-18 12:04:19,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 12:04:19,142 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:19,143 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 12:04:19,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 12:04:19,143 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:19,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:19,143 INFO L82 PathProgramCache]: Analyzing trace with hash 516367047, now seen corresponding path program 1 times [2020-08-18 12:04:19,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:19,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98753300] [2020-08-18 12:04:19,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:19,413 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:19,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:19,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:19,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:19,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:19,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:19,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:19,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:04:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:19,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:19,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 12:04:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:19,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:19,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:19,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:19,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:04:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:19,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 12:04:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:19,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 12:04:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:19,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:04:19,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98753300] [2020-08-18 12:04:19,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:04:19,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 12:04:19,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973988305] [2020-08-18 12:04:19,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 12:04:19,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:19,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 12:04:19,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:04:19,591 INFO L87 Difference]: Start difference. First operand 224 states and 254 transitions. Second operand 11 states. [2020-08-18 12:04:20,150 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:20,389 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:20,616 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:21,335 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:21,604 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:21,841 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:22,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:04:22,563 INFO L93 Difference]: Finished difference Result 467 states and 563 transitions. [2020-08-18 12:04:22,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 12:04:22,567 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-18 12:04:22,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:04:22,569 INFO L225 Difference]: With dead ends: 467 [2020-08-18 12:04:22,569 INFO L226 Difference]: Without dead ends: 271 [2020-08-18 12:04:22,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 12:04:22,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-08-18 12:04:22,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 228. [2020-08-18 12:04:22,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-08-18 12:04:22,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 258 transitions. [2020-08-18 12:04:22,619 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 258 transitions. Word has length 93 [2020-08-18 12:04:22,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:04:22,620 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 258 transitions. [2020-08-18 12:04:22,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 12:04:22,620 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 258 transitions. [2020-08-18 12:04:22,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 12:04:22,621 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:22,622 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 12:04:22,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 12:04:22,622 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:22,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:22,622 INFO L82 PathProgramCache]: Analyzing trace with hash -185232827, now seen corresponding path program 1 times [2020-08-18 12:04:22,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:22,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052874211] [2020-08-18 12:04:22,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:22,861 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:22,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:22,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:22,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:22,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:22,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:22,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:22,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:04:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:22,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:22,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 12:04:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:22,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:22,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:22,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:22,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:04:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:22,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 12:04:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:22,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 12:04:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:22,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:04:22,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052874211] [2020-08-18 12:04:22,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:04:22,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:04:22,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905403849] [2020-08-18 12:04:22,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:04:22,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:22,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:04:22,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:04:22,993 INFO L87 Difference]: Start difference. First operand 228 states and 258 transitions. Second operand 9 states. [2020-08-18 12:04:24,410 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:24,744 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 12:04:24,973 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:25,200 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:25,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:04:25,940 INFO L93 Difference]: Finished difference Result 468 states and 562 transitions. [2020-08-18 12:04:25,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 12:04:25,941 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-18 12:04:25,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:04:25,943 INFO L225 Difference]: With dead ends: 468 [2020-08-18 12:04:25,943 INFO L226 Difference]: Without dead ends: 268 [2020-08-18 12:04:25,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 12:04:25,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-08-18 12:04:25,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 228. [2020-08-18 12:04:25,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-08-18 12:04:25,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 257 transitions. [2020-08-18 12:04:25,982 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 257 transitions. Word has length 93 [2020-08-18 12:04:25,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:04:25,983 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 257 transitions. [2020-08-18 12:04:25,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:04:25,983 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 257 transitions. [2020-08-18 12:04:25,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 12:04:25,985 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:25,985 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 12:04:25,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 12:04:25,985 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:25,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:25,986 INFO L82 PathProgramCache]: Analyzing trace with hash -2053119352, now seen corresponding path program 1 times [2020-08-18 12:04:25,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:25,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632472522] [2020-08-18 12:04:25,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:26,260 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:26,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:26,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:26,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:26,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:26,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:26,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:26,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:04:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:26,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:26,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 12:04:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:26,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:26,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:26,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:26,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:04:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:26,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 12:04:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:26,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 12:04:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:26,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:04:26,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632472522] [2020-08-18 12:04:26,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:04:26,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 12:04:26,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840326536] [2020-08-18 12:04:26,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 12:04:26,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:26,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 12:04:26,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:04:26,455 INFO L87 Difference]: Start difference. First operand 228 states and 257 transitions. Second operand 7 states. [2020-08-18 12:04:26,928 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:27,476 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:29,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:04:29,016 INFO L93 Difference]: Finished difference Result 649 states and 806 transitions. [2020-08-18 12:04:29,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 12:04:29,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-08-18 12:04:29,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:04:29,020 INFO L225 Difference]: With dead ends: 649 [2020-08-18 12:04:29,020 INFO L226 Difference]: Without dead ends: 449 [2020-08-18 12:04:29,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 12:04:29,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-08-18 12:04:29,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 407. [2020-08-18 12:04:29,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-08-18 12:04:29,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 473 transitions. [2020-08-18 12:04:29,088 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 473 transitions. Word has length 93 [2020-08-18 12:04:29,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:04:29,089 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 473 transitions. [2020-08-18 12:04:29,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 12:04:29,089 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 473 transitions. [2020-08-18 12:04:29,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 12:04:29,091 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:29,091 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:04:29,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 12:04:29,092 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:29,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:29,092 INFO L82 PathProgramCache]: Analyzing trace with hash 868259694, now seen corresponding path program 1 times [2020-08-18 12:04:29,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:29,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328413694] [2020-08-18 12:04:29,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,441 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:29,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:04:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 12:04:29,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 12:04:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:04:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 12:04:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 12:04:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:04:29,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328413694] [2020-08-18 12:04:29,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:04:29,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 12:04:29,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548801423] [2020-08-18 12:04:29,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 12:04:29,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:29,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 12:04:29,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 12:04:29,637 INFO L87 Difference]: Start difference. First operand 407 states and 473 transitions. Second operand 12 states. [2020-08-18 12:04:30,100 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:30,764 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:31,829 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:32,140 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:32,401 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:04:32,658 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:32,914 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:34,163 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:34,438 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:35,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:04:35,169 INFO L93 Difference]: Finished difference Result 1129 states and 1396 transitions. [2020-08-18 12:04:35,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 12:04:35,170 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-08-18 12:04:35,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:04:35,175 INFO L225 Difference]: With dead ends: 1129 [2020-08-18 12:04:35,176 INFO L226 Difference]: Without dead ends: 824 [2020-08-18 12:04:35,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 12:04:35,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-08-18 12:04:35,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 702. [2020-08-18 12:04:35,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-18 12:04:35,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 808 transitions. [2020-08-18 12:04:35,313 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 808 transitions. Word has length 97 [2020-08-18 12:04:35,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:04:35,314 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 808 transitions. [2020-08-18 12:04:35,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 12:04:35,314 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 808 transitions. [2020-08-18 12:04:35,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-18 12:04:35,319 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:35,319 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:04:35,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 12:04:35,320 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:35,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:35,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1063606964, now seen corresponding path program 1 times [2020-08-18 12:04:35,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:35,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037706687] [2020-08-18 12:04:35,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,657 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:35,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:04:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 12:04:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:04:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:04:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:04:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 12:04:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 12:04:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 12:04:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 12:04:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-18 12:04:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 12:04:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:35,921 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 12:04:35,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037706687] [2020-08-18 12:04:35,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:04:35,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 12:04:35,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713861555] [2020-08-18 12:04:35,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 12:04:35,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:35,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 12:04:35,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 12:04:35,924 INFO L87 Difference]: Start difference. First operand 702 states and 808 transitions. Second operand 16 states. [2020-08-18 12:04:36,649 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:04:36,974 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 12:04:37,233 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 12:04:37,483 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 12:04:38,113 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:38,392 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:39,143 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:39,491 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 12:04:40,352 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:40,606 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 12:04:40,850 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:41,153 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:04:41,717 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:42,095 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:04:42,432 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 12:04:43,018 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:04:43,300 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 12:04:43,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:04:43,814 INFO L93 Difference]: Finished difference Result 1547 states and 1835 transitions. [2020-08-18 12:04:43,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-18 12:04:43,815 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 159 [2020-08-18 12:04:43,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:04:43,822 INFO L225 Difference]: With dead ends: 1547 [2020-08-18 12:04:43,823 INFO L226 Difference]: Without dead ends: 943 [2020-08-18 12:04:43,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-18 12:04:43,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2020-08-18 12:04:43,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 850. [2020-08-18 12:04:43,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-08-18 12:04:43,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 986 transitions. [2020-08-18 12:04:43,982 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 986 transitions. Word has length 159 [2020-08-18 12:04:43,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:04:43,984 INFO L479 AbstractCegarLoop]: Abstraction has 850 states and 986 transitions. [2020-08-18 12:04:43,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 12:04:43,984 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 986 transitions. [2020-08-18 12:04:43,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-08-18 12:04:43,990 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:43,991 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-08-18 12:04:43,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 12:04:43,991 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:43,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:43,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1141492594, now seen corresponding path program 1 times [2020-08-18 12:04:43,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:43,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522093498] [2020-08-18 12:04:43,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,292 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:44,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:04:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 12:04:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:04:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:04:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:04:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 12:04:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:04:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:44,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 12:04:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 12:04:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-18 12:04:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:44,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:04:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 12:04:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 12:04:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 12:04:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-18 12:04:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:04:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-08-18 12:04:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-18 12:04:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:44,767 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 83 proven. 29 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-08-18 12:04:44,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522093498] [2020-08-18 12:04:44,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:04:44,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 12:04:44,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263257536] [2020-08-18 12:04:44,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 12:04:44,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:44,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 12:04:44,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 12:04:44,770 INFO L87 Difference]: Start difference. First operand 850 states and 986 transitions. Second operand 15 states. [2020-08-18 12:04:46,153 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:46,410 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:04:46,659 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:04:46,890 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:48,365 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:04:49,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:04:49,209 INFO L93 Difference]: Finished difference Result 2242 states and 2707 transitions. [2020-08-18 12:04:49,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 12:04:49,210 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 277 [2020-08-18 12:04:49,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:04:49,219 INFO L225 Difference]: With dead ends: 2242 [2020-08-18 12:04:49,219 INFO L226 Difference]: Without dead ends: 1325 [2020-08-18 12:04:49,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-18 12:04:49,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2020-08-18 12:04:49,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1123. [2020-08-18 12:04:49,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-08-18 12:04:49,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1332 transitions. [2020-08-18 12:04:49,512 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1332 transitions. Word has length 277 [2020-08-18 12:04:49,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:04:49,517 INFO L479 AbstractCegarLoop]: Abstraction has 1123 states and 1332 transitions. [2020-08-18 12:04:49,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 12:04:49,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1332 transitions. [2020-08-18 12:04:49,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-08-18 12:04:49,524 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:49,524 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-08-18 12:04:49,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 12:04:49,525 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:49,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:49,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1975666707, now seen corresponding path program 1 times [2020-08-18 12:04:49,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:49,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092443058] [2020-08-18 12:04:49,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:49,888 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:49,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:49,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:49,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:49,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:49,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:49,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:49,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:04:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:49,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 12:04:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:49,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:49,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:04:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:50,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:04:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:04:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 12:04:50,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:04:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 12:04:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 12:04:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 12:04:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-18 12:04:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:04:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 12:04:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 12:04:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-18 12:04:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-18 12:04:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:04:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-18 12:04:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 12:04:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:50,290 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 90 proven. 36 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-08-18 12:04:50,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092443058] [2020-08-18 12:04:50,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:04:50,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 12:04:50,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470367104] [2020-08-18 12:04:50,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 12:04:50,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:50,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 12:04:50,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 12:04:50,302 INFO L87 Difference]: Start difference. First operand 1123 states and 1332 transitions. Second operand 16 states. [2020-08-18 12:04:50,804 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:51,121 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:04:51,378 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:04:51,630 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:04:52,309 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:53,041 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:53,385 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:53,631 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:54,230 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:55,041 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:55,296 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:55,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:04:55,845 INFO L93 Difference]: Finished difference Result 2127 states and 2561 transitions. [2020-08-18 12:04:55,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 12:04:55,846 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 283 [2020-08-18 12:04:55,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:04:55,855 INFO L225 Difference]: With dead ends: 2127 [2020-08-18 12:04:55,855 INFO L226 Difference]: Without dead ends: 1125 [2020-08-18 12:04:55,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-18 12:04:55,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-08-18 12:04:56,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1075. [2020-08-18 12:04:56,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1075 states. [2020-08-18 12:04:56,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1258 transitions. [2020-08-18 12:04:56,062 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1258 transitions. Word has length 283 [2020-08-18 12:04:56,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:04:56,062 INFO L479 AbstractCegarLoop]: Abstraction has 1075 states and 1258 transitions. [2020-08-18 12:04:56,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 12:04:56,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1258 transitions. [2020-08-18 12:04:56,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-08-18 12:04:56,068 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:56,068 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:04:56,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 12:04:56,068 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:56,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:56,069 INFO L82 PathProgramCache]: Analyzing trace with hash 748030073, now seen corresponding path program 1 times [2020-08-18 12:04:56,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:56,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168279460] [2020-08-18 12:04:56,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,365 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:56,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:04:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 12:04:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:04:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:04:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:04:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 12:04:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:04:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 12:04:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 12:04:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 12:04:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 12:04:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:04:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 12:04:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 12:04:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-18 12:04:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-18 12:04:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-18 12:04:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:04:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-08-18 12:04:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-08-18 12:04:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2020-08-18 12:04:56,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168279460] [2020-08-18 12:04:56,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:04:56,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 12:04:56,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019163339] [2020-08-18 12:04:56,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 12:04:56,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:56,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 12:04:56,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:04:56,712 INFO L87 Difference]: Start difference. First operand 1075 states and 1258 transitions. Second operand 11 states.