/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=0.5 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:38:56,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:38:56,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:38:56,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:38:56,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:38:57,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:38:57,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:38:57,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:38:57,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:38:57,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:38:57,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:38:57,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:38:57,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:38:57,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:38:57,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:38:57,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:38:57,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:38:57,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:38:57,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:38:57,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:38:57,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:38:57,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:38:57,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:38:57,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:38:57,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:38:57,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:38:57,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:38:57,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:38:57,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:38:57,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:38:57,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:38:57,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:38:57,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:38:57,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:38:57,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:38:57,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:38:57,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:38:57,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:38:57,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:38:57,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:38:57,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:38:57,057 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 06:38:57,101 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:38:57,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:38:57,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:38:57,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:38:57,103 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:38:57,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:38:57,104 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:38:57,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:38:57,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:38:57,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:38:57,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:38:57,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:38:57,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:38:57,106 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:38:57,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:38:57,107 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:38:57,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:38:57,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:38:57,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:38:57,108 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:38:57,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:38:57,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:38:57,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:38:57,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:38:57,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:38:57,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:38:57,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:38:57,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:38:57,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:38:57,109 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=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:38:57,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:38:57,410 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:38:57,414 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:38:57,415 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:38:57,416 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:38:57,417 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-19 06:38:57,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ceb1efce/823856c65a48464e9cd2744d259033dd/FLAGe53251de6 [2020-08-19 06:38:58,008 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:38:58,009 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-19 06:38:58,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ceb1efce/823856c65a48464e9cd2744d259033dd/FLAGe53251de6 [2020-08-19 06:38:58,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ceb1efce/823856c65a48464e9cd2744d259033dd [2020-08-19 06:38:58,320 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:38:58,322 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:38:58,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:38:58,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:38:58,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:38:58,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:38:58" (1/1) ... [2020-08-19 06:38:58,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bcf94a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:58, skipping insertion in model container [2020-08-19 06:38:58,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:38:58" (1/1) ... [2020-08-19 06:38:58,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:38:58,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:38:58,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:38:58,823 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:38:58,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:38:58,966 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:38:58,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:58 WrapperNode [2020-08-19 06:38:58,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:38:58,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:38:58,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:38:58,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:38:58,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:58" (1/1) ... [2020-08-19 06:38:58,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:58" (1/1) ... [2020-08-19 06:38:59,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:58" (1/1) ... [2020-08-19 06:38:59,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:58" (1/1) ... [2020-08-19 06:38:59,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:58" (1/1) ... [2020-08-19 06:38:59,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:58" (1/1) ... [2020-08-19 06:38:59,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:58" (1/1) ... [2020-08-19 06:38:59,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:38:59,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:38:59,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:38:59,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:38:59,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:58" (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 06:38:59,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:38:59,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:38:59,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 06:38:59,137 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 06:38:59,137 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 06:38:59,137 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 06:38:59,138 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 06:38:59,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:38:59,138 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 06:38:59,139 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 06:38:59,139 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 06:38:59,139 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 06:38:59,139 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 06:38:59,139 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 06:38:59,140 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 06:38:59,140 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 06:38:59,141 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 06:38:59,141 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 06:38:59,141 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 06:38:59,141 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 06:38:59,141 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 06:38:59,141 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 06:38:59,141 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 06:38:59,142 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 06:38:59,142 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 06:38:59,143 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 06:38:59,143 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 06:38:59,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 06:38:59,144 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 06:38:59,144 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 06:38:59,144 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 06:38:59,144 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 06:38:59,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 06:38:59,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 06:38:59,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 06:38:59,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 06:38:59,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 06:38:59,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 06:38:59,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 06:38:59,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:38:59,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:38:59,146 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 06:38:59,146 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 06:38:59,146 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 06:38:59,147 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 06:38:59,147 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 06:38:59,147 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 06:38:59,147 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 06:38:59,147 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 06:38:59,147 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 06:38:59,147 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 06:38:59,148 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 06:38:59,148 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 06:38:59,148 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 06:38:59,148 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:38:59,148 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 06:38:59,149 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 06:38:59,149 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 06:38:59,149 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 06:38:59,149 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 06:38:59,149 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 06:38:59,149 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 06:38:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 06:38:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 06:38:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 06:38:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 06:38:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 06:38:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 06:38:59,151 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 06:38:59,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:38:59,151 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 06:38:59,152 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 06:38:59,152 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 06:38:59,153 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 06:38:59,153 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 06:38:59,154 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 06:38:59,154 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 06:38:59,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 06:38:59,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 06:38:59,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:38:59,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 06:38:59,155 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 06:38:59,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:38:59,155 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 06:38:59,155 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 06:38:59,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:38:59,156 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 06:38:59,156 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 06:38:59,156 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 06:38:59,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:38:59,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 06:38:59,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:39:00,303 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:39:00,304 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 06:39:00,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:39:00 BoogieIcfgContainer [2020-08-19 06:39:00,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:39:00,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:39:00,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:39:00,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:39:00,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:38:58" (1/3) ... [2020-08-19 06:39:00,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a256ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:39:00, skipping insertion in model container [2020-08-19 06:39:00,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:58" (2/3) ... [2020-08-19 06:39:00,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a256ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:39:00, skipping insertion in model container [2020-08-19 06:39:00,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:39:00" (3/3) ... [2020-08-19 06:39:00,318 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product42.cil.c [2020-08-19 06:39:00,329 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:39:00,341 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:39:00,356 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:39:00,383 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:39:00,384 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:39:00,384 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:39:00,384 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:39:00,384 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:39:00,385 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:39:00,385 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:39:00,385 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:39:00,405 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-08-19 06:39:00,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 06:39:00,416 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:00,417 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 06:39:00,417 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:00,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:00,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1349332709, now seen corresponding path program 1 times [2020-08-19 06:39:00,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:00,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519621522] [2020-08-19 06:39:00,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:01,153 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:01,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:01,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:01,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:01,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:01,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:01,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:39:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:01,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:39:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:01,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:39:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:01,249 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 06:39:01,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519621522] [2020-08-19 06:39:01,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:01,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:39:01,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926881322] [2020-08-19 06:39:01,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:39:01,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:01,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:39:01,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:39:01,288 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-08-19 06:39:02,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:02,552 INFO L93 Difference]: Finished difference Result 296 states and 385 transitions. [2020-08-19 06:39:02,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:39:02,555 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 06:39:02,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:02,570 INFO L225 Difference]: With dead ends: 296 [2020-08-19 06:39:02,570 INFO L226 Difference]: Without dead ends: 160 [2020-08-19 06:39:02,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:39:02,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-19 06:39:02,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 127. [2020-08-19 06:39:02,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-19 06:39:02,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2020-08-19 06:39:02,671 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 52 [2020-08-19 06:39:02,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:02,671 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2020-08-19 06:39:02,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:39:02,672 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2020-08-19 06:39:02,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 06:39:02,676 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:02,676 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] [2020-08-19 06:39:02,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:39:02,677 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:02,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:02,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1093164693, now seen corresponding path program 1 times [2020-08-19 06:39:02,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:02,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765685088] [2020-08-19 06:39:02,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:03,067 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:03,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:03,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:03,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:03,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:03,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:03,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 06:39:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:03,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 06:39:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:03,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 06:39:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:03,112 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 06:39:03,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765685088] [2020-08-19 06:39:03,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:03,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:39:03,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250242555] [2020-08-19 06:39:03,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:39:03,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:03,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:39:03,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:39:03,116 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand 4 states. [2020-08-19 06:39:03,557 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:04,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:04,328 INFO L93 Difference]: Finished difference Result 225 states and 272 transitions. [2020-08-19 06:39:04,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:39:04,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 06:39:04,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:04,332 INFO L225 Difference]: With dead ends: 225 [2020-08-19 06:39:04,332 INFO L226 Difference]: Without dead ends: 144 [2020-08-19 06:39:04,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:39:04,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-19 06:39:04,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-19 06:39:04,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-19 06:39:04,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2020-08-19 06:39:04,369 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 53 [2020-08-19 06:39:04,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:04,369 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2020-08-19 06:39:04,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:39:04,370 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2020-08-19 06:39:04,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 06:39:04,372 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:04,372 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] [2020-08-19 06:39:04,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:39:04,373 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:04,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:04,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1756790423, now seen corresponding path program 1 times [2020-08-19 06:39:04,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:04,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059902953] [2020-08-19 06:39:04,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:04,765 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:04,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:04,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:04,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:04,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:04,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:04,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:39:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:04,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:39:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:04,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:39:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:04,885 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 06:39:04,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059902953] [2020-08-19 06:39:04,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:04,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:39:04,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139381584] [2020-08-19 06:39:04,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:39:04,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:04,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:39:04,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:39:04,888 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 8 states. [2020-08-19 06:39:05,252 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:39:05,565 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:05,840 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:06,088 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:07,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:07,255 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2020-08-19 06:39:07,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 06:39:07,259 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-19 06:39:07,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:07,261 INFO L225 Difference]: With dead ends: 238 [2020-08-19 06:39:07,262 INFO L226 Difference]: Without dead ends: 144 [2020-08-19 06:39:07,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:39:07,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-19 06:39:07,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-19 06:39:07,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-19 06:39:07,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2020-08-19 06:39:07,296 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 58 [2020-08-19 06:39:07,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:07,296 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2020-08-19 06:39:07,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:39:07,297 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2020-08-19 06:39:07,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-19 06:39:07,299 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:07,299 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 06:39:07,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:39:07,300 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:07,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:07,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1312872772, now seen corresponding path program 1 times [2020-08-19 06:39:07,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:07,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856667929] [2020-08-19 06:39:07,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:07,570 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:07,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:07,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:07,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:07,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:07,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:07,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 06:39:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:07,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:07,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-19 06:39:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:07,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-19 06:39:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:07,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-19 06:39:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:07,661 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 06:39:07,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856667929] [2020-08-19 06:39:07,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:07,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 06:39:07,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142194440] [2020-08-19 06:39:07,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:39:07,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:07,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:39:07,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:39:07,665 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand 6 states. [2020-08-19 06:39:08,027 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:39:09,142 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:09,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:09,764 INFO L93 Difference]: Finished difference Result 338 states and 414 transitions. [2020-08-19 06:39:09,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 06:39:09,765 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-08-19 06:39:09,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:09,769 INFO L225 Difference]: With dead ends: 338 [2020-08-19 06:39:09,770 INFO L226 Difference]: Without dead ends: 244 [2020-08-19 06:39:09,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:39:09,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-19 06:39:09,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 201. [2020-08-19 06:39:09,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-08-19 06:39:09,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2020-08-19 06:39:09,814 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 66 [2020-08-19 06:39:09,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:09,815 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2020-08-19 06:39:09,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:39:09,815 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2020-08-19 06:39:09,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-08-19 06:39:09,817 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:09,817 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] [2020-08-19 06:39:09,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:39:09,817 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:09,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:09,818 INFO L82 PathProgramCache]: Analyzing trace with hash 362669874, now seen corresponding path program 1 times [2020-08-19 06:39:09,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:09,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523287256] [2020-08-19 06:39:09,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:10,110 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:10,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:10,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:10,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:10,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:10,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:10,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 06:39:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:10,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:10,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:10,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:39:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:10,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-19 06:39:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:10,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 06:39:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:10,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-19 06:39:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:10,276 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 06:39:10,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523287256] [2020-08-19 06:39:10,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:10,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:39:10,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978021206] [2020-08-19 06:39:10,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:39:10,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:10,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:39:10,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:39:10,280 INFO L87 Difference]: Start difference. First operand 201 states and 230 transitions. Second operand 8 states. [2020-08-19 06:39:10,659 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:39:12,066 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:12,330 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:12,581 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:12,820 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:39:13,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:13,466 INFO L93 Difference]: Finished difference Result 555 states and 692 transitions. [2020-08-19 06:39:13,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 06:39:13,469 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-08-19 06:39:13,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:13,474 INFO L225 Difference]: With dead ends: 555 [2020-08-19 06:39:13,475 INFO L226 Difference]: Without dead ends: 378 [2020-08-19 06:39:13,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-19 06:39:13,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-08-19 06:39:13,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 335. [2020-08-19 06:39:13,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-19 06:39:13,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 389 transitions. [2020-08-19 06:39:13,553 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 389 transitions. Word has length 80 [2020-08-19 06:39:13,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:13,554 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 389 transitions. [2020-08-19 06:39:13,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:39:13,554 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 389 transitions. [2020-08-19 06:39:13,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 06:39:13,556 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:13,557 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] [2020-08-19 06:39:13,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:39:13,557 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:13,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:13,558 INFO L82 PathProgramCache]: Analyzing trace with hash 871612076, now seen corresponding path program 1 times [2020-08-19 06:39:13,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:13,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723963669] [2020-08-19 06:39:13,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:13,841 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:13,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:13,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:13,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:13,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:13,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:13,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 06:39:13,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:13,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 06:39:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:13,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:13,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:13,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:39:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:13,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 06:39:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:13,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 06:39:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:13,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 06:39:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:14,009 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 06:39:14,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723963669] [2020-08-19 06:39:14,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:14,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:39:14,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620614965] [2020-08-19 06:39:14,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:39:14,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:14,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:39:14,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:39:14,011 INFO L87 Difference]: Start difference. First operand 335 states and 389 transitions. Second operand 9 states. [2020-08-19 06:39:14,374 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:39:14,909 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:39:16,479 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:39:18,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:18,144 INFO L93 Difference]: Finished difference Result 815 states and 1039 transitions. [2020-08-19 06:39:18,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 06:39:18,144 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-19 06:39:18,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:18,151 INFO L225 Difference]: With dead ends: 815 [2020-08-19 06:39:18,151 INFO L226 Difference]: Without dead ends: 627 [2020-08-19 06:39:18,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-19 06:39:18,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-08-19 06:39:18,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 556. [2020-08-19 06:39:18,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-19 06:39:18,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 666 transitions. [2020-08-19 06:39:18,260 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 666 transitions. Word has length 84 [2020-08-19 06:39:18,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:18,261 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 666 transitions. [2020-08-19 06:39:18,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:39:18,261 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 666 transitions. [2020-08-19 06:39:18,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 06:39:18,263 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:18,263 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] [2020-08-19 06:39:18,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:39:18,264 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:18,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:18,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1201377837, now seen corresponding path program 1 times [2020-08-19 06:39:18,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:18,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188244823] [2020-08-19 06:39:18,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,527 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:18,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 06:39:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 06:39:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:39:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 06:39:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 06:39:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 06:39:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:18,700 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 06:39:18,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188244823] [2020-08-19 06:39:18,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:18,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:39:18,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125284773] [2020-08-19 06:39:18,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:39:18,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:18,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:39:18,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:39:18,703 INFO L87 Difference]: Start difference. First operand 556 states and 666 transitions. Second operand 8 states. [2020-08-19 06:39:19,643 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:19,878 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:20,134 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:21,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:21,060 INFO L93 Difference]: Finished difference Result 1006 states and 1249 transitions. [2020-08-19 06:39:21,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 06:39:21,060 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-19 06:39:21,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:21,064 INFO L225 Difference]: With dead ends: 1006 [2020-08-19 06:39:21,065 INFO L226 Difference]: Without dead ends: 601 [2020-08-19 06:39:21,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:39:21,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-08-19 06:39:21,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 556. [2020-08-19 06:39:21,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-19 06:39:21,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 665 transitions. [2020-08-19 06:39:21,171 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 665 transitions. Word has length 84 [2020-08-19 06:39:21,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:21,172 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 665 transitions. [2020-08-19 06:39:21,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:39:21,172 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 665 transitions. [2020-08-19 06:39:21,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 06:39:21,173 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:21,174 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] [2020-08-19 06:39:21,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 06:39:21,174 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:21,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:21,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1128991279, now seen corresponding path program 1 times [2020-08-19 06:39:21,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:21,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142989679] [2020-08-19 06:39:21,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,448 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:21,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 06:39:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 06:39:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:39:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 06:39:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 06:39:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 06:39:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:21,611 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 06:39:21,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142989679] [2020-08-19 06:39:21,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:21,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 06:39:21,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848986771] [2020-08-19 06:39:21,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 06:39:21,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:21,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 06:39:21,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:39:21,617 INFO L87 Difference]: Start difference. First operand 556 states and 665 transitions. Second operand 12 states. [2020-08-19 06:39:22,252 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:22,501 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:22,733 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:23,586 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:23,855 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:39:24,116 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:24,355 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:25,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:25,369 INFO L93 Difference]: Finished difference Result 1144 states and 1416 transitions. [2020-08-19 06:39:25,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 06:39:25,372 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-19 06:39:25,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:25,376 INFO L225 Difference]: With dead ends: 1144 [2020-08-19 06:39:25,376 INFO L226 Difference]: Without dead ends: 612 [2020-08-19 06:39:25,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-19 06:39:25,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-08-19 06:39:25,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 563. [2020-08-19 06:39:25,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-08-19 06:39:25,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 672 transitions. [2020-08-19 06:39:25,518 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 672 transitions. Word has length 84 [2020-08-19 06:39:25,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:25,518 INFO L479 AbstractCegarLoop]: Abstraction has 563 states and 672 transitions. [2020-08-19 06:39:25,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 06:39:25,519 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 672 transitions. [2020-08-19 06:39:25,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-19 06:39:25,520 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:25,521 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:39:25,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 06:39:25,521 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:25,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:25,522 INFO L82 PathProgramCache]: Analyzing trace with hash -482545033, now seen corresponding path program 1 times [2020-08-19 06:39:25,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:25,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027534263] [2020-08-19 06:39:25,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,839 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:25,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 06:39:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 06:39:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:39:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:26,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:26,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:26,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 06:39:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:26,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 06:39:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:26,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 06:39:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:26,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 06:39:26,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027534263] [2020-08-19 06:39:26,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:39:26,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 06:39:26,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206247382] [2020-08-19 06:39:26,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 06:39:26,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:26,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 06:39:26,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:39:26,178 INFO L87 Difference]: Start difference. First operand 563 states and 672 transitions. Second operand 12 states. [2020-08-19 06:39:26,937 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:39:27,660 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:28,579 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:39:28,895 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:39:29,204 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:39:29,463 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:39:29,761 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 06:39:30,021 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:39:30,496 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-08-19 06:39:30,756 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:39:31,038 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:39:31,311 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 06:39:33,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:33,296 INFO L93 Difference]: Finished difference Result 1664 states and 2066 transitions. [2020-08-19 06:39:33,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 06:39:33,299 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-19 06:39:33,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:33,306 INFO L225 Difference]: With dead ends: 1664 [2020-08-19 06:39:33,306 INFO L226 Difference]: Without dead ends: 1125 [2020-08-19 06:39:33,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-08-19 06:39:33,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-08-19 06:39:33,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1062. [2020-08-19 06:39:33,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1062 states. [2020-08-19 06:39:33,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1253 transitions. [2020-08-19 06:39:33,480 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1253 transitions. Word has length 96 [2020-08-19 06:39:33,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:33,480 INFO L479 AbstractCegarLoop]: Abstraction has 1062 states and 1253 transitions. [2020-08-19 06:39:33,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 06:39:33,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1253 transitions. [2020-08-19 06:39:33,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-19 06:39:33,483 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:33,483 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:33,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 06:39:33,484 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:33,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:33,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1334976659, now seen corresponding path program 1 times [2020-08-19 06:39:33,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:33,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498408239] [2020-08-19 06:39:33,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:33,857 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:33,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:33,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:33,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:33,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:33,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:33,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 06:39:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:33,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 06:39:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:33,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:39:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:33,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:33,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:33,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:39:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:33,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:34,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:34,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 06:39:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:34,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-19 06:39:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:34,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-19 06:39:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:34,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 06:39:34,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498408239] [2020-08-19 06:39:34,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:34,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-19 06:39:34,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479711131] [2020-08-19 06:39:34,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 06:39:34,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:34,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 06:39:34,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-19 06:39:34,061 INFO L87 Difference]: Start difference. First operand 1062 states and 1253 transitions. Second operand 14 states. [2020-08-19 06:39:34,829 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:35,153 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:35,375 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:35,961 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:39:36,733 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:39:37,067 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:37,644 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:37,902 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:39:38,183 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:39:39,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:39,917 INFO L93 Difference]: Finished difference Result 2205 states and 2747 transitions. [2020-08-19 06:39:39,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 06:39:39,920 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 100 [2020-08-19 06:39:39,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:39,928 INFO L225 Difference]: With dead ends: 2205 [2020-08-19 06:39:39,928 INFO L226 Difference]: Without dead ends: 1167 [2020-08-19 06:39:39,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2020-08-19 06:39:39,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2020-08-19 06:39:40,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 978. [2020-08-19 06:39:40,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-08-19 06:39:40,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1149 transitions. [2020-08-19 06:39:40,149 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1149 transitions. Word has length 100 [2020-08-19 06:39:40,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:40,150 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1149 transitions. [2020-08-19 06:39:40,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 06:39:40,150 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1149 transitions. [2020-08-19 06:39:40,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-19 06:39:40,153 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:40,153 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:39:40,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 06:39:40,154 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:40,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:40,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1799494055, now seen corresponding path program 1 times [2020-08-19 06:39:40,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:40,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361093628] [2020-08-19 06:39:40,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,545 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:40,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 06:39:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 06:39:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:39:40,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:39:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 06:39:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-19 06:39:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-19 06:39:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 06:39:40,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361093628] [2020-08-19 06:39:40,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:40,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 06:39:40,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140624877] [2020-08-19 06:39:40,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 06:39:40,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:40,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 06:39:40,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-19 06:39:40,718 INFO L87 Difference]: Start difference. First operand 978 states and 1149 transitions. Second operand 13 states. [2020-08-19 06:39:41,385 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:41,616 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:41,839 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:42,915 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:39:43,401 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:43,708 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:39:43,972 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 06:39:44,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:44,665 INFO L93 Difference]: Finished difference Result 1688 states and 1988 transitions. [2020-08-19 06:39:44,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 06:39:44,666 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 100 [2020-08-19 06:39:44,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:44,667 INFO L225 Difference]: With dead ends: 1688 [2020-08-19 06:39:44,667 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 06:39:44,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-08-19 06:39:44,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 06:39:44,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 06:39:44,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 06:39:44,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 06:39:44,673 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 100 [2020-08-19 06:39:44,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:44,673 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 06:39:44,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 06:39:44,673 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 06:39:44,673 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 06:39:44,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 06:39:44,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 06:39:45,932 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-19 06:39:48,788 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 235 [2020-08-19 06:39:49,326 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 235 [2020-08-19 06:39:49,650 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-19 06:39:50,162 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-19 06:39:51,225 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-19 06:39:52,429 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 162 DAG size of output: 30 [2020-08-19 06:39:52,608 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-19 06:39:53,102 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 40 [2020-08-19 06:39:53,277 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 24 [2020-08-19 06:39:53,555 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 23 [2020-08-19 06:39:53,727 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1