/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:59:24,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:59:24,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:59:24,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:59:24,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:59:24,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:59:24,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:59:24,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:59:24,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:59:24,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:59:24,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:59:24,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:59:24,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:59:24,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:59:24,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:59:24,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:59:24,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:59:24,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:59:24,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:59:24,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:59:24,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:59:24,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:59:24,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:59:24,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:59:24,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:59:24,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:59:24,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:59:24,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:59:24,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:59:24,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:59:24,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:59:24,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:59:24,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:59:24,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:59:24,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:59:24,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:59:24,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:59:24,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:59:24,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:59:24,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:59:24,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:59:24,203 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 16:59:24,226 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:59:24,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:59:24,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:59:24,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:59:24,228 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:59:24,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:59:24,229 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:59:24,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:59:24,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:59:24,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:59:24,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:59:24,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:59:24,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:59:24,230 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:59:24,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:59:24,230 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:59:24,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:59:24,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:59:24,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:59:24,231 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:59:24,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:59:24,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:59:24,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:59:24,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:59:24,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:59:24,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:59:24,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:59:24,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:59:24,233 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:59:24,233 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 16:59:24,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:59:24,523 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:59:24,526 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:59:24,528 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:59:24,528 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:59:24,529 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product39.cil.c [2020-08-18 16:59:24,603 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/594e5cd33/c92a0bfb761042999217d2c37f039a3f/FLAGd01dbf27a [2020-08-18 16:59:25,206 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:59:25,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product39.cil.c [2020-08-18 16:59:25,228 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/594e5cd33/c92a0bfb761042999217d2c37f039a3f/FLAGd01dbf27a [2020-08-18 16:59:25,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/594e5cd33/c92a0bfb761042999217d2c37f039a3f [2020-08-18 16:59:25,558 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:59:25,560 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:59:25,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:59:25,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:59:25,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:59:25,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:59:25" (1/1) ... [2020-08-18 16:59:25,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42a63ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:59:25, skipping insertion in model container [2020-08-18 16:59:25,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:59:25" (1/1) ... [2020-08-18 16:59:25,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:59:25,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:59:26,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:59:26,092 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:59:26,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:59:26,236 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:59:26,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:59:26 WrapperNode [2020-08-18 16:59:26,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:59:26,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:59:26,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:59:26,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:59:26,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:59:26" (1/1) ... [2020-08-18 16:59:26,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:59:26" (1/1) ... [2020-08-18 16:59:26,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:59:26" (1/1) ... [2020-08-18 16:59:26,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:59:26" (1/1) ... [2020-08-18 16:59:26,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:59:26" (1/1) ... [2020-08-18 16:59:26,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:59:26" (1/1) ... [2020-08-18 16:59:26,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:59:26" (1/1) ... [2020-08-18 16:59:26,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:59:26,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:59:26,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:59:26,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:59:26,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:59:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:59:26,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:59:26,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:59:26,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:59:26,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:59:26,424 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:59:26,424 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:59:26,425 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:59:26,425 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:59:26,425 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:59:26,425 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:59:26,425 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:59:26,425 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:59:26,426 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:59:26,426 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:59:26,426 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:59:26,426 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:59:26,426 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:59:26,426 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:59:26,427 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 16:59:26,427 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:59:26,427 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:59:26,427 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:59:26,427 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:59:26,427 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:59:26,428 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:59:26,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 16:59:26,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 16:59:26,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 16:59:26,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:59:26,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:59:26,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:59:26,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:59:26,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:59:26,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:59:26,429 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:59:26,429 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:59:26,429 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:59:26,430 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:59:26,430 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:59:26,430 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:59:26,430 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:59:26,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:59:26,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:59:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:59:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:59:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:59:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:59:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:59:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:59:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:59:26,432 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:59:26,432 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:59:26,432 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:59:26,432 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:59:26,432 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:59:26,432 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:59:26,432 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:59:26,433 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:59:26,433 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 16:59:26,433 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 16:59:26,433 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 16:59:26,433 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:59:26,433 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:59:26,434 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:59:26,434 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:59:26,434 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:59:26,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:59:26,434 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:59:26,434 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:59:26,434 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:59:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:59:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:59:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 16:59:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:59:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:59:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:59:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:59:26,436 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:59:26,436 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:59:26,436 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:59:26,436 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:59:26,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:59:26,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:59:26,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:59:26,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:59:26,437 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:59:26,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:59:26,437 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:59:26,437 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:59:26,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:59:26,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:59:26,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:59:26,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:59:26,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:59:26,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:59:26,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:59:27,568 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:59:27,570 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:59:27,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:59:27 BoogieIcfgContainer [2020-08-18 16:59:27,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:59:27,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:59:27,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:59:27,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:59:27,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:59:25" (1/3) ... [2020-08-18 16:59:27,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632fed68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:59:27, skipping insertion in model container [2020-08-18 16:59:27,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:59:26" (2/3) ... [2020-08-18 16:59:27,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632fed68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:59:27, skipping insertion in model container [2020-08-18 16:59:27,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:59:27" (3/3) ... [2020-08-18 16:59:27,591 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product39.cil.c [2020-08-18 16:59:27,601 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:59:27,612 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:59:27,623 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:59:27,644 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:59:27,645 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:59:27,645 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:59:27,645 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:59:27,645 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:59:27,646 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:59:27,646 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:59:27,646 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:59:27,670 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states. [2020-08-18 16:59:27,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 16:59:27,682 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:59:27,683 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:59:27,684 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:59:27,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:59:27,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1474572721, now seen corresponding path program 1 times [2020-08-18 16:59:27,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:59:27,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174712099] [2020-08-18 16:59:27,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:59:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:28,462 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:59:28,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:28,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:59:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:28,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:59:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:28,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:59:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:28,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:59:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:28,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:59:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:28,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:59:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:28,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:28,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:59:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:28,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 16:59:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:28,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:59:28,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174712099] [2020-08-18 16:59:28,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:59:28,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:59:28,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730827342] [2020-08-18 16:59:28,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:59:28,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:59:28,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:59:28,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:59:28,610 INFO L87 Difference]: Start difference. First operand 185 states. Second operand 4 states. [2020-08-18 16:59:29,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:59:29,792 INFO L93 Difference]: Finished difference Result 314 states and 404 transitions. [2020-08-18 16:59:29,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:59:29,795 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 16:59:29,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:59:29,810 INFO L225 Difference]: With dead ends: 314 [2020-08-18 16:59:29,810 INFO L226 Difference]: Without dead ends: 173 [2020-08-18 16:59:29,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:59:29,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-08-18 16:59:29,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 142. [2020-08-18 16:59:29,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-08-18 16:59:29,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 167 transitions. [2020-08-18 16:59:29,917 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 167 transitions. Word has length 59 [2020-08-18 16:59:29,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:59:29,918 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 167 transitions. [2020-08-18 16:59:29,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:59:29,918 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 167 transitions. [2020-08-18 16:59:29,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 16:59:29,922 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:59:29,922 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] [2020-08-18 16:59:29,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:59:29,923 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:59:29,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:59:29,923 INFO L82 PathProgramCache]: Analyzing trace with hash -902835711, now seen corresponding path program 1 times [2020-08-18 16:59:29,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:59:29,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446447389] [2020-08-18 16:59:29,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:59:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:30,307 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:59:30,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:30,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:59:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:30,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:59:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:30,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:59:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:30,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:59:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:30,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:59:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:30,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:59:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:30,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:30,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 16:59:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:30,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 16:59:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:30,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:59:30,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446447389] [2020-08-18 16:59:30,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:59:30,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:59:30,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806524585] [2020-08-18 16:59:30,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:59:30,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:59:30,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:59:30,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:59:30,438 INFO L87 Difference]: Start difference. First operand 142 states and 167 transitions. Second operand 9 states. [2020-08-18 16:59:30,794 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:59:31,117 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:59:31,373 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:59:31,610 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:59:32,619 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:34,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:59:34,366 INFO L93 Difference]: Finished difference Result 481 states and 605 transitions. [2020-08-18 16:59:34,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 16:59:34,368 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-18 16:59:34,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:59:34,374 INFO L225 Difference]: With dead ends: 481 [2020-08-18 16:59:34,375 INFO L226 Difference]: Without dead ends: 367 [2020-08-18 16:59:34,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:59:34,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-08-18 16:59:34,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 313. [2020-08-18 16:59:34,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-08-18 16:59:34,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 384 transitions. [2020-08-18 16:59:34,461 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 384 transitions. Word has length 64 [2020-08-18 16:59:34,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:59:34,462 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 384 transitions. [2020-08-18 16:59:34,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:59:34,462 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 384 transitions. [2020-08-18 16:59:34,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 16:59:34,465 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:59:34,465 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] [2020-08-18 16:59:34,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:59:34,465 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:59:34,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:59:34,466 INFO L82 PathProgramCache]: Analyzing trace with hash -2087202736, now seen corresponding path program 1 times [2020-08-18 16:59:34,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:59:34,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061845235] [2020-08-18 16:59:34,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:59:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:34,771 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:59:34,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:34,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:59:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:34,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:59:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:34,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:59:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:34,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:59:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:34,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:59:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:34,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:59:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:34,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:59:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:34,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:34,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 16:59:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:34,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 16:59:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:34,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 16:59:34,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061845235] [2020-08-18 16:59:34,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:59:34,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:59:34,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080354612] [2020-08-18 16:59:34,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:59:34,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:59:34,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:59:34,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:59:34,906 INFO L87 Difference]: Start difference. First operand 313 states and 384 transitions. Second operand 9 states. [2020-08-18 16:59:35,288 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:59:35,945 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:59:36,925 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:59:37,289 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:37,717 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:59:37,963 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:59:38,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:59:38,816 INFO L93 Difference]: Finished difference Result 829 states and 1126 transitions. [2020-08-18 16:59:38,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 16:59:38,817 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-18 16:59:38,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:59:38,824 INFO L225 Difference]: With dead ends: 829 [2020-08-18 16:59:38,825 INFO L226 Difference]: Without dead ends: 544 [2020-08-18 16:59:38,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 16:59:38,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-08-18 16:59:38,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 454. [2020-08-18 16:59:38,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-08-18 16:59:38,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 573 transitions. [2020-08-18 16:59:38,938 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 573 transitions. Word has length 70 [2020-08-18 16:59:38,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:59:38,939 INFO L479 AbstractCegarLoop]: Abstraction has 454 states and 573 transitions. [2020-08-18 16:59:38,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:59:38,939 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 573 transitions. [2020-08-18 16:59:38,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 16:59:38,942 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:59:38,942 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] [2020-08-18 16:59:38,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:59:38,942 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:59:38,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:59:38,943 INFO L82 PathProgramCache]: Analyzing trace with hash 571882893, now seen corresponding path program 1 times [2020-08-18 16:59:38,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:59:38,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34371428] [2020-08-18 16:59:38,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:59:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:39,204 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:59:39,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:39,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:59:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:39,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:59:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:39,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:59:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:39,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:59:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:39,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:59:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:39,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:59:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:39,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:39,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:59:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:39,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:59:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:39,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:59:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:39,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:59:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:39,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:59:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:39,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 16:59:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:39,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 16:59:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:39,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:59:39,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34371428] [2020-08-18 16:59:39,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:59:39,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 16:59:39,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494512948] [2020-08-18 16:59:39,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:59:39,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:59:39,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:59:39,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:59:39,325 INFO L87 Difference]: Start difference. First operand 454 states and 573 transitions. Second operand 6 states. [2020-08-18 16:59:39,812 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:40,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:59:40,908 INFO L93 Difference]: Finished difference Result 810 states and 1016 transitions. [2020-08-18 16:59:40,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:59:40,909 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-08-18 16:59:40,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:59:40,916 INFO L225 Difference]: With dead ends: 810 [2020-08-18 16:59:40,916 INFO L226 Difference]: Without dead ends: 485 [2020-08-18 16:59:40,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:59:40,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-18 16:59:40,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 412. [2020-08-18 16:59:40,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-08-18 16:59:40,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 497 transitions. [2020-08-18 16:59:40,993 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 497 transitions. Word has length 88 [2020-08-18 16:59:40,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:59:40,994 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 497 transitions. [2020-08-18 16:59:40,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:59:40,994 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 497 transitions. [2020-08-18 16:59:40,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 16:59:40,996 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:59:40,996 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:59:40,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:59:40,997 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:59:40,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:59:40,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1962075473, now seen corresponding path program 1 times [2020-08-18 16:59:40,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:59:40,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996516085] [2020-08-18 16:59:40,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:59:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:41,269 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:59:41,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:41,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:59:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:41,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:59:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:41,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:59:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:41,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:59:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:41,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:59:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:41,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:59:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:41,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:41,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:59:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:41,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:59:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:41,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:59:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:41,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:59:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:41,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:59:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:41,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 16:59:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:41,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 16:59:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:41,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:59:41,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996516085] [2020-08-18 16:59:41,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:59:41,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:59:41,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989714537] [2020-08-18 16:59:41,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:59:41,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:59:41,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:59:41,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:59:41,453 INFO L87 Difference]: Start difference. First operand 412 states and 497 transitions. Second operand 9 states. [2020-08-18 16:59:41,792 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:59:42,833 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:43,079 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:59:43,370 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:43,623 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:44,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:59:44,596 INFO L93 Difference]: Finished difference Result 1234 states and 1655 transitions. [2020-08-18 16:59:44,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 16:59:44,597 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-18 16:59:44,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:59:44,606 INFO L225 Difference]: With dead ends: 1234 [2020-08-18 16:59:44,607 INFO L226 Difference]: Without dead ends: 850 [2020-08-18 16:59:44,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:59:44,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-08-18 16:59:44,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 727. [2020-08-18 16:59:44,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-08-18 16:59:44,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 881 transitions. [2020-08-18 16:59:44,777 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 881 transitions. Word has length 92 [2020-08-18 16:59:44,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:59:44,779 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 881 transitions. [2020-08-18 16:59:44,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:59:44,779 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 881 transitions. [2020-08-18 16:59:44,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 16:59:44,791 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:59:44,791 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:59:44,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:59:44,791 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:59:44,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:59:44,792 INFO L82 PathProgramCache]: Analyzing trace with hash 236594576, now seen corresponding path program 1 times [2020-08-18 16:59:44,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:59:44,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492404807] [2020-08-18 16:59:44,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:59:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:45,082 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:59:45,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:45,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:59:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:45,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:59:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:45,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:59:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:45,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:59:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:45,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:59:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:45,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:59:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:45,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:45,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:59:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:45,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:59:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:45,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:59:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:45,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:59:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:45,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:59:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:45,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 16:59:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:45,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 16:59:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:45,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:59:45,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492404807] [2020-08-18 16:59:45,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:59:45,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:59:45,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064079389] [2020-08-18 16:59:45,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:59:45,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:59:45,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:59:45,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:59:45,241 INFO L87 Difference]: Start difference. First operand 727 states and 881 transitions. Second operand 9 states. [2020-08-18 16:59:46,306 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:59:46,575 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:59:46,848 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:47,116 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:47,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:59:47,822 INFO L93 Difference]: Finished difference Result 1548 states and 1977 transitions. [2020-08-18 16:59:47,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:59:47,823 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-18 16:59:47,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:59:47,830 INFO L225 Difference]: With dead ends: 1548 [2020-08-18 16:59:47,831 INFO L226 Difference]: Without dead ends: 849 [2020-08-18 16:59:47,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:59:47,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2020-08-18 16:59:47,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 747. [2020-08-18 16:59:47,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2020-08-18 16:59:47,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 901 transitions. [2020-08-18 16:59:47,978 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 901 transitions. Word has length 92 [2020-08-18 16:59:47,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:59:47,978 INFO L479 AbstractCegarLoop]: Abstraction has 747 states and 901 transitions. [2020-08-18 16:59:47,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:59:47,979 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 901 transitions. [2020-08-18 16:59:47,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 16:59:47,989 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:59:47,990 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:59:47,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:59:47,990 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:59:47,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:59:47,991 INFO L82 PathProgramCache]: Analyzing trace with hash 938194450, now seen corresponding path program 1 times [2020-08-18 16:59:47,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:59:47,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5881593] [2020-08-18 16:59:47,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:59:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:48,399 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:59:48,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:48,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:59:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:48,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:59:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:48,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:59:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:48,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:59:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:48,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:59:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:48,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:59:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:48,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:48,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:59:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:48,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:59:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:48,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:59:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:48,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:59:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:48,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:59:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:48,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 16:59:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:48,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 16:59:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:48,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:59:48,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5881593] [2020-08-18 16:59:48,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:59:48,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 16:59:48,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166719962] [2020-08-18 16:59:48,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 16:59:48,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:59:48,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 16:59:48,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:59:48,533 INFO L87 Difference]: Start difference. First operand 747 states and 901 transitions. Second operand 11 states. [2020-08-18 16:59:49,043 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:59:49,305 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:49,528 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:50,245 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:50,511 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:50,740 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:51,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:59:51,643 INFO L93 Difference]: Finished difference Result 1410 states and 1790 transitions. [2020-08-18 16:59:51,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:59:51,644 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2020-08-18 16:59:51,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:59:51,649 INFO L225 Difference]: With dead ends: 1410 [2020-08-18 16:59:51,649 INFO L226 Difference]: Without dead ends: 691 [2020-08-18 16:59:51,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:59:51,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-08-18 16:59:51,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 618. [2020-08-18 16:59:51,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-08-18 16:59:51,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 727 transitions. [2020-08-18 16:59:51,754 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 727 transitions. Word has length 92 [2020-08-18 16:59:51,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:59:51,755 INFO L479 AbstractCegarLoop]: Abstraction has 618 states and 727 transitions. [2020-08-18 16:59:51,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 16:59:51,755 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 727 transitions. [2020-08-18 16:59:51,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-18 16:59:51,759 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:59:51,759 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] [2020-08-18 16:59:51,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:59:51,759 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:59:51,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:59:51,760 INFO L82 PathProgramCache]: Analyzing trace with hash -711915603, now seen corresponding path program 1 times [2020-08-18 16:59:51,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:59:51,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142044595] [2020-08-18 16:59:51,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:59:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:52,192 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:59:52,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:52,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:59:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:52,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:59:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:52,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:59:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:52,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:59:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:52,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:59:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:52,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:59:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:52,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 16:59:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:52,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:52,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 16:59:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:52,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:59:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:52,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:59:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:52,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:59:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:52,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:59:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:52,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 16:59:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:52,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 16:59:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:52,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:59:52,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142044595] [2020-08-18 16:59:52,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:59:52,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 16:59:52,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606041472] [2020-08-18 16:59:52,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:59:52,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:59:52,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:59:52,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:59:52,437 INFO L87 Difference]: Start difference. First operand 618 states and 727 transitions. Second operand 12 states. [2020-08-18 16:59:53,061 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:59:53,818 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:59:54,480 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:59:54,802 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:59:55,039 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:59:55,326 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:59:55,603 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:59:57,357 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:59:57,651 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:59:58,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:59:58,113 INFO L93 Difference]: Finished difference Result 1813 states and 2317 transitions. [2020-08-18 16:59:58,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 16:59:58,113 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-18 16:59:58,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:59:58,122 INFO L225 Difference]: With dead ends: 1813 [2020-08-18 16:59:58,123 INFO L226 Difference]: Without dead ends: 1405 [2020-08-18 16:59:58,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 16:59:58,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2020-08-18 16:59:58,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1271. [2020-08-18 16:59:58,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2020-08-18 16:59:58,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1497 transitions. [2020-08-18 16:59:58,379 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1497 transitions. Word has length 96 [2020-08-18 16:59:58,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:59:58,381 INFO L479 AbstractCegarLoop]: Abstraction has 1271 states and 1497 transitions. [2020-08-18 16:59:58,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:59:58,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1497 transitions. [2020-08-18 16:59:58,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-18 16:59:58,385 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:59:58,385 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:59:58,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:59:58,386 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:59:58,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:59:58,386 INFO L82 PathProgramCache]: Analyzing trace with hash 69794205, now seen corresponding path program 1 times [2020-08-18 16:59:58,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:59:58,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940191242] [2020-08-18 16:59:58,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:59:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,711 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:59:58,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:59:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:59:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:59:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:59:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:59:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:59:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:59:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 16:59:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:59:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:59:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:59:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:59:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:59:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:59:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 16:59:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:59:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 16:59:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 16:59:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:59:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:59:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:59:58,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:59:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-18 16:59:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:58,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-18 16:59:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:59:59,000 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 16:59:59,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940191242] [2020-08-18 16:59:59,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:59:59,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 16:59:59,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747350491] [2020-08-18 16:59:59,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 16:59:59,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:59:59,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 16:59:59,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:59:59,004 INFO L87 Difference]: Start difference. First operand 1271 states and 1497 transitions. Second operand 16 states. [2020-08-18 16:59:59,582 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:59:59,931 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 17:00:00,219 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 17:00:00,480 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 17:00:01,121 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:01,438 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:01,809 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:00:02,107 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:00:03,183 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:03,851 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:04,155 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:04,513 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:05,056 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:05,456 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:05,830 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:00:06,537 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:06,834 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:00:07,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:00:07,598 INFO L93 Difference]: Finished difference Result 2793 states and 3416 transitions. [2020-08-18 17:00:07,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-18 17:00:07,599 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 155 [2020-08-18 17:00:07,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:00:07,610 INFO L225 Difference]: With dead ends: 2793 [2020-08-18 17:00:07,610 INFO L226 Difference]: Without dead ends: 1726 [2020-08-18 17:00:07,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=605, Invalid=2257, Unknown=0, NotChecked=0, Total=2862 [2020-08-18 17:00:07,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2020-08-18 17:00:07,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1529. [2020-08-18 17:00:07,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1529 states. [2020-08-18 17:00:07,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 1785 transitions. [2020-08-18 17:00:07,900 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 1785 transitions. Word has length 155 [2020-08-18 17:00:07,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:00:07,901 INFO L479 AbstractCegarLoop]: Abstraction has 1529 states and 1785 transitions. [2020-08-18 17:00:07,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 17:00:07,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 1785 transitions. [2020-08-18 17:00:07,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-08-18 17:00:07,908 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:00:07,909 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:00:07,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 17:00:07,910 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:00:07,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:00:07,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1402201584, now seen corresponding path program 1 times [2020-08-18 17:00:07,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:00:07,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584627180] [2020-08-18 17:00:07,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:00:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,272 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:00:08,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:00:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:00:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:00:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:00:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:00:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:00:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:00:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 17:00:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:00:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 17:00:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:00:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-18 17:00:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:08,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:00:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 17:00:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 17:00:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-18 17:00:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-08-18 17:00:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:00:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-08-18 17:00:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 17:00:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:08,664 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 76 proven. 31 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-08-18 17:00:08,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584627180] [2020-08-18 17:00:08,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:00:08,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 17:00:08,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819435669] [2020-08-18 17:00:08,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 17:00:08,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:00:08,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 17:00:08,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 17:00:08,666 INFO L87 Difference]: Start difference. First operand 1529 states and 1785 transitions. Second operand 15 states. [2020-08-18 17:00:09,736 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:09,967 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:10,240 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:10,511 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:10,786 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:11,666 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:12,189 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 17:00:12,653 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 17:00:13,027 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:15,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:00:15,239 INFO L93 Difference]: Finished difference Result 4301 states and 5229 transitions. [2020-08-18 17:00:15,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 17:00:15,240 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 269 [2020-08-18 17:00:15,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:00:15,255 INFO L225 Difference]: With dead ends: 4301 [2020-08-18 17:00:15,255 INFO L226 Difference]: Without dead ends: 2605 [2020-08-18 17:00:15,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-18 17:00:15,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2020-08-18 17:00:15,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2205. [2020-08-18 17:00:15,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2205 states. [2020-08-18 17:00:15,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 2585 transitions. [2020-08-18 17:00:15,754 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 2585 transitions. Word has length 269 [2020-08-18 17:00:15,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:00:15,754 INFO L479 AbstractCegarLoop]: Abstraction has 2205 states and 2585 transitions. [2020-08-18 17:00:15,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 17:00:15,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 2585 transitions. [2020-08-18 17:00:15,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-08-18 17:00:15,763 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:00:15,764 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:00:15,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 17:00:15,764 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:00:15,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:00:15,764 INFO L82 PathProgramCache]: Analyzing trace with hash -692797707, now seen corresponding path program 1 times [2020-08-18 17:00:15,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:00:15,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564269020] [2020-08-18 17:00:15,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:00:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,091 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:00:16,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:00:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:00:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:00:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:00:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:16,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:00:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:00:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:00:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 17:00:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:00:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 17:00:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:00:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:00:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-18 17:00:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:00:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 17:00:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 17:00:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-08-18 17:00:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-18 17:00:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:00:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 17:00:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-18 17:00:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:16,498 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 85 proven. 36 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-08-18 17:00:16,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564269020] [2020-08-18 17:00:16,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:00:16,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 17:00:16,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419985639] [2020-08-18 17:00:16,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 17:00:16,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:00:16,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 17:00:16,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 17:00:16,501 INFO L87 Difference]: Start difference. First operand 2205 states and 2585 transitions. Second operand 16 states. [2020-08-18 17:00:16,946 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:17,264 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 17:00:17,512 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:17,751 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:18,422 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:19,390 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:19,689 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:19,930 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:20,460 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:21,343 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:21,576 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:22,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:00:22,296 INFO L93 Difference]: Finished difference Result 4208 states and 4993 transitions. [2020-08-18 17:00:22,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 17:00:22,296 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 275 [2020-08-18 17:00:22,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:00:22,308 INFO L225 Difference]: With dead ends: 4208 [2020-08-18 17:00:22,308 INFO L226 Difference]: Without dead ends: 2229 [2020-08-18 17:00:22,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-18 17:00:22,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2020-08-18 17:00:22,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 2158. [2020-08-18 17:00:22,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2158 states. [2020-08-18 17:00:22,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2158 states to 2158 states and 2494 transitions. [2020-08-18 17:00:22,696 INFO L78 Accepts]: Start accepts. Automaton has 2158 states and 2494 transitions. Word has length 275 [2020-08-18 17:00:22,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:00:22,697 INFO L479 AbstractCegarLoop]: Abstraction has 2158 states and 2494 transitions. [2020-08-18 17:00:22,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 17:00:22,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2158 states and 2494 transitions. [2020-08-18 17:00:22,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-08-18 17:00:22,706 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:00:22,707 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:00:22,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 17:00:22,707 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:00:22,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:00:22,707 INFO L82 PathProgramCache]: Analyzing trace with hash 841992575, now seen corresponding path program 1 times [2020-08-18 17:00:22,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:00:22,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036794493] [2020-08-18 17:00:22,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:00:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:22,990 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:00:22,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:00:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:00:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:00:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:00:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:00:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:00:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:00:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 17:00:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:00:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 17:00:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:00:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:00:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-18 17:00:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:00:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 17:00:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 17:00:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat