/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=HIGHLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 19:24:21,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:24:21,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:24:21,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:24:21,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:24:21,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:24:21,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:24:21,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:24:21,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:24:21,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:24:21,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:24:21,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:24:21,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:24:21,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:24:21,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:24:21,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:24:21,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:24:21,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:24:21,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:24:21,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:24:21,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:24:21,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:24:21,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:24:21,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:24:21,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 19:24:21,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 19:24:21,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 19:24:21,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 19:24:21,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 19:24:21,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 19:24:21,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 19:24:21,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 19:24:21,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 19:24:21,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 19:24:21,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 19:24:21,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 19:24:21,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 19:24:21,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 19:24:21,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:24:21,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:24:21,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:24:21,220 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 19:24:21,257 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:24:21,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:24:21,259 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:24:21,259 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:24:21,260 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:24:21,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:24:21,260 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:24:21,260 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:24:21,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:24:21,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:24:21,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:24:21,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:24:21,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:24:21,262 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:24:21,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:24:21,263 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:24:21,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:24:21,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:24:21,263 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:24:21,263 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:24:21,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:24:21,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:24:21,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:24:21,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:24:21,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:24:21,265 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:24:21,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:24:21,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:24:21,265 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:24:21,266 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=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 19:24:21,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:24:21,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:24:21,595 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:24:21,597 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:24:21,598 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:24:21,598 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2020-08-18 19:24:21,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edbd5f6d9/8b2683cee6b44853921f6daf9577ce15/FLAG3975ce4c0 [2020-08-18 19:24:22,169 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:24:22,171 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2020-08-18 19:24:22,197 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edbd5f6d9/8b2683cee6b44853921f6daf9577ce15/FLAG3975ce4c0 [2020-08-18 19:24:22,547 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edbd5f6d9/8b2683cee6b44853921f6daf9577ce15 [2020-08-18 19:24:22,555 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:24:22,556 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:24:22,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:24:22,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:24:22,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:24:22,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:24:22" (1/1) ... [2020-08-18 19:24:22,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750e1b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:24:22, skipping insertion in model container [2020-08-18 19:24:22,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:24:22" (1/1) ... [2020-08-18 19:24:22,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:24:22,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:24:23,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:24:23,028 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:24:23,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:24:23,188 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:24:23,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:24:23 WrapperNode [2020-08-18 19:24:23,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:24:23,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:24:23,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:24:23,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:24:23,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:24:23" (1/1) ... [2020-08-18 19:24:23,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:24:23" (1/1) ... [2020-08-18 19:24:23,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:24:23" (1/1) ... [2020-08-18 19:24:23,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:24:23" (1/1) ... [2020-08-18 19:24:23,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:24:23" (1/1) ... [2020-08-18 19:24:23,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:24:23" (1/1) ... [2020-08-18 19:24:23,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:24:23" (1/1) ... [2020-08-18 19:24:23,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:24:23,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:24:23,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:24:23,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:24:23,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:24:23" (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 19:24:23,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:24:23,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:24:23,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 19:24:23,352 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 19:24:23,352 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 19:24:23,353 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 19:24:23,353 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 19:24:23,353 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 19:24:23,353 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 19:24:23,353 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 19:24:23,354 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 19:24:23,354 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 19:24:23,354 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 19:24:23,355 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 19:24:23,355 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 19:24:23,356 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 19:24:23,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 19:24:23,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 19:24:23,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 19:24:23,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 19:24:23,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 19:24:23,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 19:24:23,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 19:24:23,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 19:24:23,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 19:24:23,359 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 19:24:23,359 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 19:24:23,359 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 19:24:23,360 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 19:24:23,360 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:24:23,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 19:24:23,360 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 19:24:23,360 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 19:24:23,361 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 19:24:23,361 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 19:24:23,361 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 19:24:23,361 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 19:24:23,361 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 19:24:23,361 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 19:24:23,362 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 19:24:23,362 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 19:24:23,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 19:24:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:24:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:24:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 19:24:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 19:24:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 19:24:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 19:24:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 19:24:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 19:24:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 19:24:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 19:24:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 19:24:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 19:24:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 19:24:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 19:24:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 19:24:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 19:24:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 19:24:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 19:24:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 19:24:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 19:24:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 19:24:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 19:24:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 19:24:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 19:24:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 19:24:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 19:24:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 19:24:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 19:24:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 19:24:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 19:24:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 19:24:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 19:24:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 19:24:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 19:24:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 19:24:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 19:24:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 19:24:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 19:24:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 19:24:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 19:24:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 19:24:23,368 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 19:24:23,368 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 19:24:23,368 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 19:24:23,368 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 19:24:23,368 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 19:24:23,368 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 19:24:23,368 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 19:24:23,369 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 19:24:23,369 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 19:24:23,369 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 19:24:23,369 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:24:23,369 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 19:24:23,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:24:23,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 19:24:23,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:24:24,383 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:24:24,383 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 19:24:24,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:24:24 BoogieIcfgContainer [2020-08-18 19:24:24,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:24:24,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:24:24,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:24:24,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:24:24,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:24:22" (1/3) ... [2020-08-18 19:24:24,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500c8aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:24:24, skipping insertion in model container [2020-08-18 19:24:24,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:24:23" (2/3) ... [2020-08-18 19:24:24,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500c8aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:24:24, skipping insertion in model container [2020-08-18 19:24:24,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:24:24" (3/3) ... [2020-08-18 19:24:24,397 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product40.cil.c [2020-08-18 19:24:24,408 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:24:24,416 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:24:24,430 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:24:24,457 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:24:24,457 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:24:24,457 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:24:24,457 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:24:24,457 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:24:24,457 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:24:24,458 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:24:24,458 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:24:24,481 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2020-08-18 19:24:24,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 19:24:24,492 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:24:24,493 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 19:24:24,494 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:24:24,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:24:24,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1231866733, now seen corresponding path program 1 times [2020-08-18 19:24:24,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:24:24,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846983704] [2020-08-18 19:24:24,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:24:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:25,225 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:24:25,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:24:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:25,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:24:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:25,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:24:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:25,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:24:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:25,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:24:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:25,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:24:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:25,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:24:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:25,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:24:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:25,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 19:24:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:25,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 19:24:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:25,344 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 19:24:25,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846983704] [2020-08-18 19:24:25,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:24:25,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:24:25,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811513978] [2020-08-18 19:24:25,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:24:25,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:24:25,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:24:25,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:24:25,372 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 4 states. [2020-08-18 19:24:26,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:24:26,601 INFO L93 Difference]: Finished difference Result 324 states and 416 transitions. [2020-08-18 19:24:26,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 19:24:26,603 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 19:24:26,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:24:26,620 INFO L225 Difference]: With dead ends: 324 [2020-08-18 19:24:26,621 INFO L226 Difference]: Without dead ends: 179 [2020-08-18 19:24:26,626 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 19:24:26,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-18 19:24:26,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 146. [2020-08-18 19:24:26,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-18 19:24:26,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2020-08-18 19:24:26,727 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 59 [2020-08-18 19:24:26,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:24:26,728 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2020-08-18 19:24:26,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:24:26,728 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2020-08-18 19:24:26,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 19:24:26,732 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:24:26,732 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:24:26,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:24:26,733 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:24:26,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:24:26,733 INFO L82 PathProgramCache]: Analyzing trace with hash 735941424, now seen corresponding path program 1 times [2020-08-18 19:24:26,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:24:26,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433141347] [2020-08-18 19:24:26,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:24:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:27,109 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:24:27,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:24:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:27,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:24:27,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:27,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:24:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:27,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:24:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:27,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:24:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:27,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:24:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:27,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 19:24:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:27,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:24:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:27,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 19:24:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:27,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 19:24:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:27,166 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 19:24:27,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433141347] [2020-08-18 19:24:27,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:24:27,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 19:24:27,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880261196] [2020-08-18 19:24:27,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 19:24:27,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:24:27,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 19:24:27,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:24:27,171 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand 5 states. [2020-08-18 19:24:27,669 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:24:28,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:24:28,697 INFO L93 Difference]: Finished difference Result 259 states and 316 transitions. [2020-08-18 19:24:28,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 19:24:28,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 19:24:28,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:24:28,701 INFO L225 Difference]: With dead ends: 259 [2020-08-18 19:24:28,702 INFO L226 Difference]: Without dead ends: 169 [2020-08-18 19:24:28,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:24:28,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-18 19:24:28,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 137. [2020-08-18 19:24:28,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-18 19:24:28,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2020-08-18 19:24:28,751 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 60 [2020-08-18 19:24:28,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:24:28,751 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2020-08-18 19:24:28,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 19:24:28,751 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2020-08-18 19:24:28,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 19:24:28,753 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:24:28,754 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:24:28,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:24:28,754 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:24:28,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:24:28,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1019781836, now seen corresponding path program 1 times [2020-08-18 19:24:28,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:24:28,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435375473] [2020-08-18 19:24:28,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:24:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:29,112 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:24:29,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:24:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:29,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:24:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:29,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:24:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:29,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:24:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:29,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:24:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:29,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:24:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:29,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:24:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:29,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:24:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:29,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 19:24:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:29,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 19:24:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:29,306 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 19:24:29,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435375473] [2020-08-18 19:24:29,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:24:29,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:24:29,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753914854] [2020-08-18 19:24:29,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:24:29,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:24:29,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:24:29,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:24:29,310 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand 9 states. [2020-08-18 19:24:29,688 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:24:30,033 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:24:30,270 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:24:30,523 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:24:31,458 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:24:33,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:24:33,258 INFO L93 Difference]: Finished difference Result 460 states and 568 transitions. [2020-08-18 19:24:33,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 19:24:33,263 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-18 19:24:33,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:24:33,271 INFO L225 Difference]: With dead ends: 460 [2020-08-18 19:24:33,272 INFO L226 Difference]: Without dead ends: 351 [2020-08-18 19:24:33,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 19:24:33,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-08-18 19:24:33,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 290. [2020-08-18 19:24:33,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-08-18 19:24:33,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 350 transitions. [2020-08-18 19:24:33,364 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 350 transitions. Word has length 65 [2020-08-18 19:24:33,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:24:33,367 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 350 transitions. [2020-08-18 19:24:33,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:24:33,368 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 350 transitions. [2020-08-18 19:24:33,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 19:24:33,376 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:24:33,377 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 19:24:33,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:24:33,377 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:24:33,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:24:33,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1071873071, now seen corresponding path program 1 times [2020-08-18 19:24:33,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:24:33,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300316898] [2020-08-18 19:24:33,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:24:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:33,745 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:24:33,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:24:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:33,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:24:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:33,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:24:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:33,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:24:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:33,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:24:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:33,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:24:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:33,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:24:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:33,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 19:24:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:33,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:24:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:33,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 19:24:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:33,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 19:24:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:33,866 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 19:24:33,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300316898] [2020-08-18 19:24:33,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:24:33,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:24:33,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146002528] [2020-08-18 19:24:33,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:24:33,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:24:33,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:24:33,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:24:33,870 INFO L87 Difference]: Start difference. First operand 290 states and 350 transitions. Second operand 9 states. [2020-08-18 19:24:34,231 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:24:34,963 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:24:35,766 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:24:36,089 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:24:36,340 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:24:36,588 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:24:37,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:24:37,376 INFO L93 Difference]: Finished difference Result 747 states and 974 transitions. [2020-08-18 19:24:37,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 19:24:37,377 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-18 19:24:37,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:24:37,382 INFO L225 Difference]: With dead ends: 747 [2020-08-18 19:24:37,383 INFO L226 Difference]: Without dead ends: 485 [2020-08-18 19:24:37,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 19:24:37,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-18 19:24:37,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 417. [2020-08-18 19:24:37,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-08-18 19:24:37,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 501 transitions. [2020-08-18 19:24:37,464 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 501 transitions. Word has length 70 [2020-08-18 19:24:37,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:24:37,465 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 501 transitions. [2020-08-18 19:24:37,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:24:37,465 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 501 transitions. [2020-08-18 19:24:37,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 19:24:37,467 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:24:37,467 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:24:37,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 19:24:37,467 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:24:37,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:24:37,468 INFO L82 PathProgramCache]: Analyzing trace with hash -573764694, now seen corresponding path program 1 times [2020-08-18 19:24:37,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:24:37,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591108718] [2020-08-18 19:24:37,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:24:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:37,743 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:24:37,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:24:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:37,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:24:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:37,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:24:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:37,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:24:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:37,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:24:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:37,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:24:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:37,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:24:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:37,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:24:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:37,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:24:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:37,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:24:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:37,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:24:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:37,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:24:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:37,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:24:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:37,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 19:24:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:37,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 19:24:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:37,875 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 19:24:37,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591108718] [2020-08-18 19:24:37,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:24:37,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:24:37,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617270483] [2020-08-18 19:24:37,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:24:37,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:24:37,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:24:37,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:24:37,878 INFO L87 Difference]: Start difference. First operand 417 states and 501 transitions. Second operand 9 states. [2020-08-18 19:24:38,290 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:24:39,415 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:24:39,672 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:24:39,928 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:24:40,191 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:24:41,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:24:41,467 INFO L93 Difference]: Finished difference Result 1260 states and 1685 transitions. [2020-08-18 19:24:41,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 19:24:41,469 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-18 19:24:41,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:24:41,477 INFO L225 Difference]: With dead ends: 1260 [2020-08-18 19:24:41,477 INFO L226 Difference]: Without dead ends: 871 [2020-08-18 19:24:41,480 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 19:24:41,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-08-18 19:24:41,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 743. [2020-08-18 19:24:41,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-18 19:24:41,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 897 transitions. [2020-08-18 19:24:41,612 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 897 transitions. Word has length 93 [2020-08-18 19:24:41,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:24:41,613 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 897 transitions. [2020-08-18 19:24:41,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:24:41,613 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 897 transitions. [2020-08-18 19:24:41,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 19:24:41,616 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:24:41,616 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:24:41,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 19:24:41,617 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:24:41,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:24:41,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1995721705, now seen corresponding path program 1 times [2020-08-18 19:24:41,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:24:41,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590603983] [2020-08-18 19:24:41,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:24:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:41,887 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:24:41,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:24:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:41,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:24:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:41,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:24:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:41,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:24:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:41,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:24:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:41,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:24:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:41,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:24:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:41,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:24:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:41,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:24:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:41,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:24:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:41,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:24:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:41,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:24:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:41,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:24:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:41,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 19:24:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:41,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 19:24:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:42,007 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 19:24:42,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590603983] [2020-08-18 19:24:42,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:24:42,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:24:42,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837154682] [2020-08-18 19:24:42,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:24:42,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:24:42,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:24:42,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:24:42,010 INFO L87 Difference]: Start difference. First operand 743 states and 897 transitions. Second operand 9 states. [2020-08-18 19:24:43,063 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:24:43,312 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 19:24:43,565 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:24:43,826 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:24:44,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:24:44,621 INFO L93 Difference]: Finished difference Result 1585 states and 2019 transitions. [2020-08-18 19:24:44,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 19:24:44,624 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-18 19:24:44,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:24:44,633 INFO L225 Difference]: With dead ends: 1585 [2020-08-18 19:24:44,633 INFO L226 Difference]: Without dead ends: 870 [2020-08-18 19:24:44,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 19:24:44,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-08-18 19:24:44,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 763. [2020-08-18 19:24:44,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-08-18 19:24:44,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 917 transitions. [2020-08-18 19:24:44,755 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 917 transitions. Word has length 93 [2020-08-18 19:24:44,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:24:44,755 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 917 transitions. [2020-08-18 19:24:44,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:24:44,756 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 917 transitions. [2020-08-18 19:24:44,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 19:24:44,758 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:24:44,758 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:24:44,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 19:24:44,759 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:24:44,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:24:44,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1597645717, now seen corresponding path program 1 times [2020-08-18 19:24:44,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:24:44,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304882148] [2020-08-18 19:24:44,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:24:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:45,095 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:24:45,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:24:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:45,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:24:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:45,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:24:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:45,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:24:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:45,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:24:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:45,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:24:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:45,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:24:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:45,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:24:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:45,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:24:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:45,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:24:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:45,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:24:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:45,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:24:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:45,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:24:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:45,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 19:24:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:45,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 19:24:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:45,254 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 19:24:45,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304882148] [2020-08-18 19:24:45,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:24:45,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 19:24:45,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577144445] [2020-08-18 19:24:45,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 19:24:45,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:24:45,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 19:24:45,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:24:45,257 INFO L87 Difference]: Start difference. First operand 763 states and 917 transitions. Second operand 11 states. [2020-08-18 19:24:46,082 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:24:46,414 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:24:46,648 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:24:47,509 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:24:47,773 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:24:48,039 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:24:48,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:24:48,947 INFO L93 Difference]: Finished difference Result 1442 states and 1826 transitions. [2020-08-18 19:24:48,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 19:24:48,947 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-18 19:24:48,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:24:48,952 INFO L225 Difference]: With dead ends: 1442 [2020-08-18 19:24:48,953 INFO L226 Difference]: Without dead ends: 707 [2020-08-18 19:24:48,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 19:24:48,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-08-18 19:24:49,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 630. [2020-08-18 19:24:49,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-08-18 19:24:49,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 739 transitions. [2020-08-18 19:24:49,071 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 739 transitions. Word has length 93 [2020-08-18 19:24:49,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:24:49,071 INFO L479 AbstractCegarLoop]: Abstraction has 630 states and 739 transitions. [2020-08-18 19:24:49,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 19:24:49,072 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 739 transitions. [2020-08-18 19:24:49,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 19:24:49,074 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:24:49,074 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:24:49,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 19:24:49,074 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:24:49,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:24:49,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1394866514, now seen corresponding path program 1 times [2020-08-18 19:24:49,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:24:49,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214441735] [2020-08-18 19:24:49,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:24:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:49,392 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:24:49,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:24:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:49,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:24:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:49,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:24:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:49,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:24:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:49,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:24:49,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:49,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:24:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:49,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:24:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:49,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 19:24:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:49,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:24:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:49,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 19:24:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:49,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:24:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:49,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:24:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:49,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:24:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:49,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:24:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:49,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 19:24:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:49,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 19:24:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:49,570 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 19:24:49,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214441735] [2020-08-18 19:24:49,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:24:49,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 19:24:49,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816424395] [2020-08-18 19:24:49,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 19:24:49,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:24:49,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 19:24:49,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:24:49,573 INFO L87 Difference]: Start difference. First operand 630 states and 739 transitions. Second operand 12 states. [2020-08-18 19:24:50,022 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:24:50,680 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:24:51,425 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:24:51,786 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:24:52,052 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:24:52,367 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:24:52,630 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:24:54,426 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:24:54,725 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:24:55,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:24:55,177 INFO L93 Difference]: Finished difference Result 1853 states and 2361 transitions. [2020-08-18 19:24:55,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 19:24:55,178 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-08-18 19:24:55,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:24:55,186 INFO L225 Difference]: With dead ends: 1853 [2020-08-18 19:24:55,186 INFO L226 Difference]: Without dead ends: 1437 [2020-08-18 19:24:55,189 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 19:24:55,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2020-08-18 19:24:55,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1299. [2020-08-18 19:24:55,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2020-08-18 19:24:55,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1525 transitions. [2020-08-18 19:24:55,381 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1525 transitions. Word has length 97 [2020-08-18 19:24:55,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:24:55,382 INFO L479 AbstractCegarLoop]: Abstraction has 1299 states and 1525 transitions. [2020-08-18 19:24:55,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 19:24:55,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1525 transitions. [2020-08-18 19:24:55,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-18 19:24:55,385 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:24:55,386 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:24:55,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 19:24:55,386 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:24:55,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:24:55,387 INFO L82 PathProgramCache]: Analyzing trace with hash 773750625, now seen corresponding path program 1 times [2020-08-18 19:24:55,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:24:55,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611891463] [2020-08-18 19:24:55,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:24:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,679 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:24:55,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:24:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:24:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:24:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:24:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:24:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:24:55,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:24:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:24:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:24:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:24:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:24:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:24:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:24:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:24:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:24:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:24:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:24:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 19:24:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:24:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 19:24:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 19:24:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:24:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:24:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 19:24:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:24:55,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 19:24:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:55,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-18 19:24:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:24:56,038 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 19:24:56,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611891463] [2020-08-18 19:24:56,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:24:56,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 19:24:56,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62424275] [2020-08-18 19:24:56,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 19:24:56,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:24:56,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 19:24:56,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 19:24:56,042 INFO L87 Difference]: Start difference. First operand 1299 states and 1525 transitions. Second operand 16 states. [2020-08-18 19:24:56,774 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 19:24:57,136 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-18 19:24:57,429 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 19:24:57,698 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 19:24:58,439 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-18 19:24:58,812 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-18 19:24:59,170 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 19:24:59,555 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 19:24:59,903 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 19:25:01,040 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:02,038 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-18 19:25:02,572 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-18 19:25:02,886 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:25:03,474 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:03,944 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 19:25:04,586 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-18 19:25:05,200 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-08-18 19:25:05,771 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 19:25:06,346 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-18 19:25:07,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:07,216 INFO L93 Difference]: Finished difference Result 2875 states and 3500 transitions. [2020-08-18 19:25:07,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-08-18 19:25:07,216 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-08-18 19:25:07,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:07,228 INFO L225 Difference]: With dead ends: 2875 [2020-08-18 19:25:07,229 INFO L226 Difference]: Without dead ends: 1784 [2020-08-18 19:25:07,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=751, Invalid=3031, Unknown=0, NotChecked=0, Total=3782 [2020-08-18 19:25:07,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2020-08-18 19:25:07,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1573. [2020-08-18 19:25:07,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-08-18 19:25:07,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 1829 transitions. [2020-08-18 19:25:07,567 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 1829 transitions. Word has length 157 [2020-08-18 19:25:07,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:07,569 INFO L479 AbstractCegarLoop]: Abstraction has 1573 states and 1829 transitions. [2020-08-18 19:25:07,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 19:25:07,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 1829 transitions. [2020-08-18 19:25:07,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-08-18 19:25:07,579 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:07,580 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:07,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 19:25:07,581 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:07,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:07,581 INFO L82 PathProgramCache]: Analyzing trace with hash -2117575381, now seen corresponding path program 1 times [2020-08-18 19:25:07,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:07,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107338653] [2020-08-18 19:25:07,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:07,929 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:07,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:07,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:07,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:07,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:07,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:07,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:07,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:25:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:07,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:25:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:25:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:25:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:25:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 19:25:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:08,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:25:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 19:25:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:25:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-18 19:25:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:25:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 19:25:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 19:25:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-08-18 19:25:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-18 19:25:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:25:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-18 19:25:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-18 19:25:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:08,372 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 81 proven. 31 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-08-18 19:25:08,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107338653] [2020-08-18 19:25:08,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:25:08,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 19:25:08,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878584858] [2020-08-18 19:25:08,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 19:25:08,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:08,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 19:25:08,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 19:25:08,375 INFO L87 Difference]: Start difference. First operand 1573 states and 1829 transitions. Second operand 15 states. [2020-08-18 19:25:09,639 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:09,907 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:25:10,136 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:10,374 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:25:10,613 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:11,601 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:25:12,105 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 19:25:12,566 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 19:25:12,921 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:15,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:15,411 INFO L93 Difference]: Finished difference Result 4467 states and 5409 transitions. [2020-08-18 19:25:15,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 19:25:15,412 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2020-08-18 19:25:15,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:15,427 INFO L225 Difference]: With dead ends: 4467 [2020-08-18 19:25:15,428 INFO L226 Difference]: Without dead ends: 2691 [2020-08-18 19:25:15,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-18 19:25:15,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2020-08-18 19:25:15,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2317. [2020-08-18 19:25:15,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2317 states. [2020-08-18 19:25:15,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 2705 transitions. [2020-08-18 19:25:15,879 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 2705 transitions. Word has length 273 [2020-08-18 19:25:15,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:15,880 INFO L479 AbstractCegarLoop]: Abstraction has 2317 states and 2705 transitions. [2020-08-18 19:25:15,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 19:25:15,881 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 2705 transitions. [2020-08-18 19:25:15,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-08-18 19:25:15,891 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:15,892 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:15,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 19:25:15,892 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:15,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:15,893 INFO L82 PathProgramCache]: Analyzing trace with hash 856417488, now seen corresponding path program 1 times [2020-08-18 19:25:15,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:15,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907159392] [2020-08-18 19:25:15,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,206 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:16,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:25:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:25:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:25:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:25:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:25:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 19:25:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:25:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 19:25:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:25:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 19:25:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-18 19:25:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:25:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 19:25:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 19:25:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-08-18 19:25:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-08-18 19:25:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:25:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-18 19:25:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-08-18 19:25:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 90 proven. 36 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-08-18 19:25:16,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907159392] [2020-08-18 19:25:16,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:25:16,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 19:25:16,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139976032] [2020-08-18 19:25:16,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 19:25:16,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:16,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 19:25:16,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 19:25:16,535 INFO L87 Difference]: Start difference. First operand 2317 states and 2705 transitions. Second operand 16 states. [2020-08-18 19:25:16,954 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:17,269 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 19:25:17,563 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:25:17,798 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:25:18,468 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:19,410 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:19,712 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:19,957 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:20,585 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:21,458 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:21,724 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191