/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:11:12,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:11:12,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:11:12,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:11:12,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:11:12,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:11:12,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:11:12,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:11:12,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:11:12,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:11:12,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:11:12,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:11:12,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:11:12,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:11:12,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:11:12,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:11:12,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:11:12,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:11:12,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:11:12,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:11:12,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:11:12,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:11:12,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:11:12,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:11:12,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:11:12,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:11:12,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:11:12,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:11:12,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:11:12,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:11:12,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:11:12,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:11:12,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:11:12,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:11:12,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:11:12,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:11:12,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:11:12,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:11:12,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:11:12,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:11:12,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:11:12,862 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 [2020-08-19 04:11:12,885 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:11:12,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:11:12,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:11:12,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:11:12,887 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:11:12,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:11:12,888 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:11:12,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:11:12,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:11:12,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:11:12,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:11:12,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:11:12,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:11:12,889 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:11:12,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:11:12,890 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:11:12,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:11:12,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:11:12,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:11:12,890 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:11:12,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:11:12,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:11:12,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:11:12,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:11:12,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:11:12,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:11:12,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:11:12,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:11:12,892 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:11:12,893 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=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:11:13,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:11:13,241 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:11:13,246 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:11:13,248 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:11:13,251 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:11:13,252 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c [2020-08-19 04:11:13,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9899ca32c/412b8908502d41cf9e7c57fdd78279d6/FLAGdf0a0e699 [2020-08-19 04:11:13,844 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:11:13,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c [2020-08-19 04:11:13,858 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9899ca32c/412b8908502d41cf9e7c57fdd78279d6/FLAGdf0a0e699 [2020-08-19 04:11:14,145 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9899ca32c/412b8908502d41cf9e7c57fdd78279d6 [2020-08-19 04:11:14,157 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:11:14,159 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:11:14,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:11:14,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:11:14,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:11:14,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:11:14" (1/1) ... [2020-08-19 04:11:14,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:11:14, skipping insertion in model container [2020-08-19 04:11:14,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:11:14" (1/1) ... [2020-08-19 04:11:14,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:11:14,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:11:14,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:11:14,579 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:11:14,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:11:14,811 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:11:14,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:11:14 WrapperNode [2020-08-19 04:11:14,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:11:14,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:11:14,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:11:14,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:11:14,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:11:14" (1/1) ... [2020-08-19 04:11:14,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:11:14" (1/1) ... [2020-08-19 04:11:14,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:11:14" (1/1) ... [2020-08-19 04:11:14,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:11:14" (1/1) ... [2020-08-19 04:11:14,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:11:14" (1/1) ... [2020-08-19 04:11:14,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:11:14" (1/1) ... [2020-08-19 04:11:14,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:11:14" (1/1) ... [2020-08-19 04:11:14,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:11:14,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:11:14,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:11:14,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:11:14,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:11:14" (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 [2020-08-19 04:11:15,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:11:15,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:11:15,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 04:11:15,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 04:11:15,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 04:11:15,028 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 04:11:15,029 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 04:11:15,029 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 04:11:15,029 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 04:11:15,030 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 04:11:15,030 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 04:11:15,030 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 04:11:15,030 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 04:11:15,031 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 04:11:15,031 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 04:11:15,032 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 04:11:15,032 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 04:11:15,032 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 04:11:15,032 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 04:11:15,032 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 04:11:15,032 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 04:11:15,032 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 04:11:15,033 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 04:11:15,033 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 04:11:15,033 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 04:11:15,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 04:11:15,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 04:11:15,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 04:11:15,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 04:11:15,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 04:11:15,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 04:11:15,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 04:11:15,035 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 04:11:15,035 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 04:11:15,035 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 04:11:15,035 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 04:11:15,036 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:11:15,036 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 04:11:15,036 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 04:11:15,036 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 04:11:15,036 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 04:11:15,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:11:15,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:11:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 04:11:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 04:11:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 04:11:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 04:11:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 04:11:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 04:11:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 04:11:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 04:11:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 04:11:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 04:11:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 04:11:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 04:11:15,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:11:15,039 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 04:11:15,039 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 04:11:15,039 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 04:11:15,040 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 04:11:15,040 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 04:11:15,040 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 04:11:15,040 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 04:11:15,040 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 04:11:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 04:11:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 04:11:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 04:11:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 04:11:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 04:11:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 04:11:15,041 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 04:11:15,042 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 04:11:15,042 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 04:11:15,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 04:11:15,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 04:11:15,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:11:15,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 04:11:15,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 04:11:15,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:11:15,045 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 04:11:15,045 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 04:11:15,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:11:15,046 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 04:11:15,046 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 04:11:15,046 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 04:11:15,046 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 04:11:15,047 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 04:11:15,047 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 04:11:15,047 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 04:11:15,047 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 04:11:15,047 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 04:11:15,047 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:11:15,047 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 04:11:15,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:11:15,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 04:11:15,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:11:16,214 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:11:16,214 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 04:11:16,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:11:16 BoogieIcfgContainer [2020-08-19 04:11:16,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:11:16,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:11:16,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:11:16,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:11:16,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:11:14" (1/3) ... [2020-08-19 04:11:16,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f44ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:11:16, skipping insertion in model container [2020-08-19 04:11:16,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:11:14" (2/3) ... [2020-08-19 04:11:16,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f44ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:11:16, skipping insertion in model container [2020-08-19 04:11:16,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:11:16" (3/3) ... [2020-08-19 04:11:16,229 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product40.cil.c [2020-08-19 04:11:16,239 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:11:16,247 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:11:16,261 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:11:16,286 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:11:16,286 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:11:16,287 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:11:16,287 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:11:16,287 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:11:16,287 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:11:16,287 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:11:16,288 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:11:16,311 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-08-19 04:11:16,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 04:11:16,321 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:11:16,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:11:16,323 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:11:16,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:11:16,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1292486909, now seen corresponding path program 1 times [2020-08-19 04:11:16,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:11:16,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095482817] [2020-08-19 04:11:16,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:11:16,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:17,003 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:11:17,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:11:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:17,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:11:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:17,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:11:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:17,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:11:17,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:17,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:11:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:17,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:11:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:17,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 04:11:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:17,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 04:11:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:17,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:11:17,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095482817] [2020-08-19 04:11:17,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:11:17,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:11:17,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167177821] [2020-08-19 04:11:17,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:11:17,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:11:17,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:11:17,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:11:17,180 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 4 states. [2020-08-19 04:11:18,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:11:18,384 INFO L93 Difference]: Finished difference Result 311 states and 408 transitions. [2020-08-19 04:11:18,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 04:11:18,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 04:11:18,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:11:18,402 INFO L225 Difference]: With dead ends: 311 [2020-08-19 04:11:18,402 INFO L226 Difference]: Without dead ends: 174 [2020-08-19 04:11:18,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:11:18,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-08-19 04:11:18,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 138. [2020-08-19 04:11:18,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-19 04:11:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 163 transitions. [2020-08-19 04:11:18,517 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 163 transitions. Word has length 51 [2020-08-19 04:11:18,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:11:18,518 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 163 transitions. [2020-08-19 04:11:18,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:11:18,519 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 163 transitions. [2020-08-19 04:11:18,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 04:11:18,526 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:11:18,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:11:18,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:11:18,527 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:11:18,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:11:18,530 INFO L82 PathProgramCache]: Analyzing trace with hash -11798802, now seen corresponding path program 1 times [2020-08-19 04:11:18,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:11:18,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844910063] [2020-08-19 04:11:18,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:11:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:18,854 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:11:18,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:11:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:18,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:11:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:18,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:11:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:18,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:11:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:18,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:11:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:18,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:11:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:18,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:11:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:18,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:11:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:18,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:11:18,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844910063] [2020-08-19 04:11:18,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:11:18,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:11:18,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132726087] [2020-08-19 04:11:18,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:11:18,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:11:18,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:11:18,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:11:18,989 INFO L87 Difference]: Start difference. First operand 138 states and 163 transitions. Second operand 5 states. [2020-08-19 04:11:19,464 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:11:20,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:11:20,464 INFO L93 Difference]: Finished difference Result 246 states and 307 transitions. [2020-08-19 04:11:20,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 04:11:20,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 04:11:20,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:11:20,468 INFO L225 Difference]: With dead ends: 246 [2020-08-19 04:11:20,469 INFO L226 Difference]: Without dead ends: 164 [2020-08-19 04:11:20,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 04:11:20,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-19 04:11:20,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 129. [2020-08-19 04:11:20,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-19 04:11:20,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 151 transitions. [2020-08-19 04:11:20,507 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 151 transitions. Word has length 52 [2020-08-19 04:11:20,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:11:20,508 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 151 transitions. [2020-08-19 04:11:20,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:11:20,508 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 151 transitions. [2020-08-19 04:11:20,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 04:11:20,510 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:11:20,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:11:20,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:11:20,511 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:11:20,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:11:20,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1490469892, now seen corresponding path program 1 times [2020-08-19 04:11:20,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:11:20,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410117848] [2020-08-19 04:11:20,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:11:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:20,887 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:11:20,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:11:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:20,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:11:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:20,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:11:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:20,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:11:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:20,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:11:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:21,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:11:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:21,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 04:11:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:21,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 04:11:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:21,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:11:21,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410117848] [2020-08-19 04:11:21,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:11:21,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:11:21,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774455260] [2020-08-19 04:11:21,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:11:21,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:11:21,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:11:21,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:11:21,037 INFO L87 Difference]: Start difference. First operand 129 states and 151 transitions. Second operand 9 states. [2020-08-19 04:11:21,396 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:11:21,697 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:21,974 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:22,213 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:22,989 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:11:24,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:11:24,892 INFO L93 Difference]: Finished difference Result 439 states and 556 transitions. [2020-08-19 04:11:24,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 04:11:24,893 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-19 04:11:24,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:11:24,901 INFO L225 Difference]: With dead ends: 439 [2020-08-19 04:11:24,901 INFO L226 Difference]: Without dead ends: 338 [2020-08-19 04:11:24,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 04:11:24,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-08-19 04:11:24,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 269. [2020-08-19 04:11:24,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-08-19 04:11:24,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 328 transitions. [2020-08-19 04:11:24,989 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 328 transitions. Word has length 57 [2020-08-19 04:11:24,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:11:24,990 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 328 transitions. [2020-08-19 04:11:24,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:11:24,990 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 328 transitions. [2020-08-19 04:11:24,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 04:11:24,993 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:11:24,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:11:24,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:11:24,993 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:11:24,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:11:24,994 INFO L82 PathProgramCache]: Analyzing trace with hash -512554003, now seen corresponding path program 1 times [2020-08-19 04:11:24,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:11:24,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154575866] [2020-08-19 04:11:24,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:11:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:25,299 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:11:25,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:11:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:25,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:11:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:25,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:11:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:25,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:11:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:25,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:11:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:25,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:11:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:25,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:11:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:25,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 04:11:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:25,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 04:11:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:25,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:11:25,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154575866] [2020-08-19 04:11:25,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:11:25,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:11:25,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644688746] [2020-08-19 04:11:25,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:11:25,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:11:25,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:11:25,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:11:25,436 INFO L87 Difference]: Start difference. First operand 269 states and 328 transitions. Second operand 9 states. [2020-08-19 04:11:25,824 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:11:26,878 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:27,294 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:11:27,547 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:27,844 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:29,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:11:29,360 INFO L93 Difference]: Finished difference Result 864 states and 1152 transitions. [2020-08-19 04:11:29,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 04:11:29,360 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-19 04:11:29,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:11:29,366 INFO L225 Difference]: With dead ends: 864 [2020-08-19 04:11:29,366 INFO L226 Difference]: Without dead ends: 623 [2020-08-19 04:11:29,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 04:11:29,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-08-19 04:11:29,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 486. [2020-08-19 04:11:29,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-08-19 04:11:29,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 596 transitions. [2020-08-19 04:11:29,490 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 596 transitions. Word has length 62 [2020-08-19 04:11:29,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:11:29,491 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 596 transitions. [2020-08-19 04:11:29,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:11:29,491 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 596 transitions. [2020-08-19 04:11:29,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-19 04:11:29,493 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:11:29,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:11:29,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:11:29,494 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:11:29,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:11:29,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1361940215, now seen corresponding path program 1 times [2020-08-19 04:11:29,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:11:29,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503549929] [2020-08-19 04:11:29,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:11:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:29,791 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:11:29,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:11:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:29,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:11:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:29,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:11:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:29,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:11:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:29,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:11:29,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:29,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:11:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:29,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 04:11:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:29,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 04:11:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:29,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 04:11:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:29,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 04:11:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:29,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:11:29,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503549929] [2020-08-19 04:11:29,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:11:29,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 04:11:29,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90271770] [2020-08-19 04:11:29,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 04:11:29,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:11:29,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 04:11:29,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:11:29,935 INFO L87 Difference]: Start difference. First operand 486 states and 596 transitions. Second operand 10 states. [2020-08-19 04:11:30,371 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:11:31,469 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:31,741 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:32,031 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:32,713 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:11:34,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:11:34,095 INFO L93 Difference]: Finished difference Result 1373 states and 1890 transitions. [2020-08-19 04:11:34,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 04:11:34,096 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-19 04:11:34,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:11:34,102 INFO L225 Difference]: With dead ends: 1373 [2020-08-19 04:11:34,103 INFO L226 Difference]: Without dead ends: 915 [2020-08-19 04:11:34,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-19 04:11:34,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2020-08-19 04:11:34,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 709. [2020-08-19 04:11:34,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2020-08-19 04:11:34,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 863 transitions. [2020-08-19 04:11:34,263 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 863 transitions. Word has length 66 [2020-08-19 04:11:34,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:11:34,264 INFO L479 AbstractCegarLoop]: Abstraction has 709 states and 863 transitions. [2020-08-19 04:11:34,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 04:11:34,264 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 863 transitions. [2020-08-19 04:11:34,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-19 04:11:34,267 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:11:34,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:11:34,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:11:34,268 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:11:34,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:11:34,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1572074791, now seen corresponding path program 1 times [2020-08-19 04:11:34,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:11:34,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536522508] [2020-08-19 04:11:34,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:11:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,516 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:11:34,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:11:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:11:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:11:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:11:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:11:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:11:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 04:11:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 04:11:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:11:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:11:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 04:11:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 04:11:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:34,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:11:34,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536522508] [2020-08-19 04:11:34,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:11:34,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 04:11:34,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928145335] [2020-08-19 04:11:34,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 04:11:34,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:11:34,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 04:11:34,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:11:34,708 INFO L87 Difference]: Start difference. First operand 709 states and 863 transitions. Second operand 10 states. [2020-08-19 04:11:35,105 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:11:36,251 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:36,527 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 04:11:36,806 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:37,080 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:38,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:11:38,845 INFO L93 Difference]: Finished difference Result 2413 states and 3450 transitions. [2020-08-19 04:11:38,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 04:11:38,846 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-19 04:11:38,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:11:38,862 INFO L225 Difference]: With dead ends: 2413 [2020-08-19 04:11:38,862 INFO L226 Difference]: Without dead ends: 1732 [2020-08-19 04:11:38,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-19 04:11:38,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2020-08-19 04:11:39,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1279. [2020-08-19 04:11:39,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-08-19 04:11:39,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1554 transitions. [2020-08-19 04:11:39,133 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1554 transitions. Word has length 89 [2020-08-19 04:11:39,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:11:39,133 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 1554 transitions. [2020-08-19 04:11:39,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 04:11:39,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1554 transitions. [2020-08-19 04:11:39,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-19 04:11:39,137 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:11:39,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:11:39,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 04:11:39,138 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:11:39,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:11:39,138 INFO L82 PathProgramCache]: Analyzing trace with hash -153406106, now seen corresponding path program 1 times [2020-08-19 04:11:39,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:11:39,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108505942] [2020-08-19 04:11:39,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:11:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:39,383 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:11:39,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:11:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:39,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:11:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:39,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:11:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:39,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:11:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:39,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:11:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:39,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:11:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:39,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 04:11:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:39,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 04:11:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:39,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:39,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:39,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:11:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:39,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:11:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:39,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 04:11:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:39,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 04:11:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:39,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:11:39,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108505942] [2020-08-19 04:11:39,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:11:39,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 04:11:39,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569562819] [2020-08-19 04:11:39,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 04:11:39,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:11:39,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 04:11:39,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:11:39,551 INFO L87 Difference]: Start difference. First operand 1279 states and 1554 transitions. Second operand 10 states. [2020-08-19 04:11:40,727 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:40,985 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 04:11:41,296 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:11:41,534 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:11:42,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:11:42,760 INFO L93 Difference]: Finished difference Result 2983 states and 3988 transitions. [2020-08-19 04:11:42,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 04:11:42,761 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-19 04:11:42,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:11:42,775 INFO L225 Difference]: With dead ends: 2983 [2020-08-19 04:11:42,775 INFO L226 Difference]: Without dead ends: 1732 [2020-08-19 04:11:42,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 04:11:42,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2020-08-19 04:11:43,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1319. [2020-08-19 04:11:43,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-08-19 04:11:43,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1594 transitions. [2020-08-19 04:11:43,093 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1594 transitions. Word has length 89 [2020-08-19 04:11:43,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:11:43,093 INFO L479 AbstractCegarLoop]: Abstraction has 1319 states and 1594 transitions. [2020-08-19 04:11:43,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 04:11:43,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1594 transitions. [2020-08-19 04:11:43,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-19 04:11:43,097 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:11:43,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:11:43,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 04:11:43,098 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:11:43,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:11:43,098 INFO L82 PathProgramCache]: Analyzing trace with hash 548193768, now seen corresponding path program 1 times [2020-08-19 04:11:43,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:11:43,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503235563] [2020-08-19 04:11:43,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:11:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:43,364 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:11:43,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:11:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:43,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:11:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:43,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:11:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:43,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:11:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:43,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:11:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:43,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:11:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:43,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 04:11:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:43,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 04:11:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:43,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:43,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:43,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:11:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:43,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:11:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:43,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 04:11:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:43,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 04:11:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:43,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:11:43,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503235563] [2020-08-19 04:11:43,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:11:43,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 04:11:43,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052231062] [2020-08-19 04:11:43,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 04:11:43,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:11:43,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 04:11:43,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:11:43,531 INFO L87 Difference]: Start difference. First operand 1319 states and 1594 transitions. Second operand 12 states. [2020-08-19 04:11:44,021 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:11:44,260 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:11:44,485 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:11:45,368 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:11:45,623 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:11:45,854 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:11:46,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:11:46,994 INFO L93 Difference]: Finished difference Result 2667 states and 3530 transitions. [2020-08-19 04:11:46,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 04:11:46,996 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2020-08-19 04:11:46,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:11:47,006 INFO L225 Difference]: With dead ends: 2667 [2020-08-19 04:11:47,007 INFO L226 Difference]: Without dead ends: 1376 [2020-08-19 04:11:47,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 04:11:47,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-08-19 04:11:47,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1087. [2020-08-19 04:11:47,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1087 states. [2020-08-19 04:11:47,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1282 transitions. [2020-08-19 04:11:47,237 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1282 transitions. Word has length 89 [2020-08-19 04:11:47,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:11:47,238 INFO L479 AbstractCegarLoop]: Abstraction has 1087 states and 1282 transitions. [2020-08-19 04:11:47,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 04:11:47,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1282 transitions. [2020-08-19 04:11:47,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 04:11:47,241 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:11:47,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:11:47,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 04:11:47,242 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:11:47,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:11:47,242 INFO L82 PathProgramCache]: Analyzing trace with hash 81932175, now seen corresponding path program 1 times [2020-08-19 04:11:47,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:11:47,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203233692] [2020-08-19 04:11:47,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:11:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:47,515 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:11:47,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:11:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:47,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:11:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:47,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:11:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:47,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:11:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:47,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:11:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:47,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:11:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:47,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:11:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:47,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:11:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:47,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 04:11:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:47,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:47,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:47,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:11:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:47,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:11:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:47,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 04:11:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:47,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 04:11:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:47,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:11:47,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203233692] [2020-08-19 04:11:47,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:11:47,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:11:47,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770738802] [2020-08-19 04:11:47,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:11:47,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:11:47,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:11:47,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:11:47,632 INFO L87 Difference]: Start difference. First operand 1087 states and 1282 transitions. Second operand 8 states. [2020-08-19 04:11:47,979 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:11:50,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:11:50,479 INFO L93 Difference]: Finished difference Result 2185 states and 2908 transitions. [2020-08-19 04:11:50,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 04:11:50,480 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-19 04:11:50,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:11:50,494 INFO L225 Difference]: With dead ends: 2185 [2020-08-19 04:11:50,494 INFO L226 Difference]: Without dead ends: 2182 [2020-08-19 04:11:50,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-19 04:11:50,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2182 states. [2020-08-19 04:11:50,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2182 to 1684. [2020-08-19 04:11:50,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1684 states. [2020-08-19 04:11:50,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2013 transitions. [2020-08-19 04:11:50,891 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2013 transitions. Word has length 93 [2020-08-19 04:11:50,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:11:50,894 INFO L479 AbstractCegarLoop]: Abstraction has 1684 states and 2013 transitions. [2020-08-19 04:11:50,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:11:50,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2013 transitions. [2020-08-19 04:11:50,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-19 04:11:50,904 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:11:50,905 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:11:50,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 04:11:50,905 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:11:50,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:11:50,906 INFO L82 PathProgramCache]: Analyzing trace with hash 688265763, now seen corresponding path program 1 times [2020-08-19 04:11:50,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:11:50,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760499120] [2020-08-19 04:11:50,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:11:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,272 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:11:51,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:11:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:11:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:11:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:11:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:11:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:11:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:11:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:11:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 04:11:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:11:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:11:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 04:11:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:11:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:11:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 04:11:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 04:11:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:11:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 04:11:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:11:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-19 04:11:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 04:11:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:11:51,574 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-19 04:11:51,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760499120] [2020-08-19 04:11:51,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:11:51,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 04:11:51,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456308318] [2020-08-19 04:11:51,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 04:11:51,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:11:51,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 04:11:51,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-19 04:11:51,578 INFO L87 Difference]: Start difference. First operand 1684 states and 2013 transitions. Second operand 19 states. [2020-08-19 04:11:52,307 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:11:52,613 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:11:52,875 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:11:53,116 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:11:53,894 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:11:54,628 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:55,018 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:57,572 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:57,832 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:58,110 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:58,381 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:58,650 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:58,916 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:59,208 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:11:59,477 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:00,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:12:00,711 INFO L93 Difference]: Finished difference Result 3638 states and 4589 transitions. [2020-08-19 04:12:00,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-19 04:12:00,712 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 152 [2020-08-19 04:12:00,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:12:00,725 INFO L225 Difference]: With dead ends: 3638 [2020-08-19 04:12:00,725 INFO L226 Difference]: Without dead ends: 1982 [2020-08-19 04:12:00,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=608, Invalid=2814, Unknown=0, NotChecked=0, Total=3422 [2020-08-19 04:12:00,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2020-08-19 04:12:01,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1630. [2020-08-19 04:12:01,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1630 states. [2020-08-19 04:12:01,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 1911 transitions. [2020-08-19 04:12:01,097 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 1911 transitions. Word has length 152 [2020-08-19 04:12:01,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:12:01,098 INFO L479 AbstractCegarLoop]: Abstraction has 1630 states and 1911 transitions. [2020-08-19 04:12:01,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 04:12:01,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 1911 transitions. [2020-08-19 04:12:01,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-19 04:12:01,105 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:12:01,105 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 04:12:01,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 04:12:01,106 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:12:01,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:12:01,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1034293868, now seen corresponding path program 1 times [2020-08-19 04:12:01,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:12:01,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760046913] [2020-08-19 04:12:01,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:12:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,401 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:12:01,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:12:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:12:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:12:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:12:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:12:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:12:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:12:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 04:12:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:12:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 04:12:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:12:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 04:12:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 04:12:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:12:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-19 04:12:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-19 04:12:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:01,637 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-19 04:12:01,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760046913] [2020-08-19 04:12:01,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:12:01,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 04:12:01,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803501052] [2020-08-19 04:12:01,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 04:12:01,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:12:01,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 04:12:01,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-19 04:12:01,639 INFO L87 Difference]: Start difference. First operand 1630 states and 1911 transitions. Second operand 14 states. [2020-08-19 04:12:02,162 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:02,395 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:02,625 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:03,277 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:04,807 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:06,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:12:06,749 INFO L93 Difference]: Finished difference Result 3066 states and 3768 transitions. [2020-08-19 04:12:06,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-19 04:12:06,750 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 156 [2020-08-19 04:12:06,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:12:06,759 INFO L225 Difference]: With dead ends: 3066 [2020-08-19 04:12:06,760 INFO L226 Difference]: Without dead ends: 1788 [2020-08-19 04:12:06,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=364, Invalid=1528, Unknown=0, NotChecked=0, Total=1892 [2020-08-19 04:12:06,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2020-08-19 04:12:07,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1514. [2020-08-19 04:12:07,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1514 states. [2020-08-19 04:12:07,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 1682 transitions. [2020-08-19 04:12:07,057 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 1682 transitions. Word has length 156 [2020-08-19 04:12:07,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:12:07,058 INFO L479 AbstractCegarLoop]: Abstraction has 1514 states and 1682 transitions. [2020-08-19 04:12:07,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 04:12:07,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 1682 transitions. [2020-08-19 04:12:07,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-19 04:12:07,064 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:12:07,064 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 04:12:07,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 04:12:07,064 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:12:07,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:12:07,065 INFO L82 PathProgramCache]: Analyzing trace with hash -630512924, now seen corresponding path program 1 times [2020-08-19 04:12:07,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:12:07,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782611596] [2020-08-19 04:12:07,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:12:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,370 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:12:07,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:12:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:12:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:12:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:12:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:12:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:12:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:12:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 04:12:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:12:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 04:12:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:12:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 04:12:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 04:12:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:12:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-19 04:12:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-08-19 04:12:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:07,630 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-08-19 04:12:07,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782611596] [2020-08-19 04:12:07,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:12:07,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 04:12:07,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366984710] [2020-08-19 04:12:07,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 04:12:07,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:12:07,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 04:12:07,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:12:07,634 INFO L87 Difference]: Start difference. First operand 1514 states and 1682 transitions. Second operand 10 states. [2020-08-19 04:12:08,636 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:10,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:12:10,768 INFO L93 Difference]: Finished difference Result 2649 states and 3159 transitions. [2020-08-19 04:12:10,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-19 04:12:10,769 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2020-08-19 04:12:10,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:12:10,770 INFO L225 Difference]: With dead ends: 2649 [2020-08-19 04:12:10,770 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 04:12:10,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=354, Invalid=1128, Unknown=0, NotChecked=0, Total=1482 [2020-08-19 04:12:10,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 04:12:10,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 04:12:10,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 04:12:10,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 04:12:10,779 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 161 [2020-08-19 04:12:10,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:12:10,779 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 04:12:10,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 04:12:10,779 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 04:12:10,780 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 04:12:10,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 04:12:10,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.