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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:07:50,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:07:50,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:07:50,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:07:50,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:07:50,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:07:50,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:07:50,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:07:50,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:07:50,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:07:50,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:07:50,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:07:50,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:07:50,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:07:50,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:07:50,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:07:50,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:07:50,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:07:50,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:07:50,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:07:50,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:07:50,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:07:50,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:07:50,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:07:50,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:07:50,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:07:50,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:07:50,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:07:50,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:07:50,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:07:50,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:07:50,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:07:50,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:07:50,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:07:50,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:07:50,368 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:07:50,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:07:50,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:07:50,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:07:50,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:07:50,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:07:50,373 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-20 13:07:50,393 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:07:50,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:07:50,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:07:50,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:07:50,396 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:07:50,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:07:50,397 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:07:50,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:07:50,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:07:50,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:07:50,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:07:50,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:07:50,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:07:50,400 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:07:50,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:07:50,400 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:07:50,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:07:50,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:07:50,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:07:50,401 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:07:50,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:07:50,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:07:50,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:07:50,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:07:50,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:07:50,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:07:50,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:07:50,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:07:50,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:07:50,452 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:07:50,465 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:07:50,468 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:07:50,469 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:07:50,470 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:07:50,470 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c [2019-09-20 13:07:50,544 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecc8c68a5/fb8f2d653ca54bc2ab4aaaa8766ac2ff/FLAG80fb50e02 [2019-09-20 13:07:51,047 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:07:51,048 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c [2019-09-20 13:07:51,073 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecc8c68a5/fb8f2d653ca54bc2ab4aaaa8766ac2ff/FLAG80fb50e02 [2019-09-20 13:07:51,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecc8c68a5/fb8f2d653ca54bc2ab4aaaa8766ac2ff [2019-09-20 13:07:51,355 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:07:51,357 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:07:51,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:07:51,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:07:51,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:07:51,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:51" (1/1) ... [2019-09-20 13:07:51,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26c31c5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:51, skipping insertion in model container [2019-09-20 13:07:51,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:51" (1/1) ... [2019-09-20 13:07:51,373 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:07:51,420 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:07:51,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:07:51,875 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:07:51,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:07:51,994 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:07:51,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:51 WrapperNode [2019-09-20 13:07:51,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:07:51,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:07:51,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:07:51,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:07:52,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:51" (1/1) ... [2019-09-20 13:07:52,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:51" (1/1) ... [2019-09-20 13:07:52,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:51" (1/1) ... [2019-09-20 13:07:52,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:51" (1/1) ... [2019-09-20 13:07:52,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:51" (1/1) ... [2019-09-20 13:07:52,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:51" (1/1) ... [2019-09-20 13:07:52,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:51" (1/1) ... [2019-09-20 13:07:52,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:07:52,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:07:52,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:07:52,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:07:52,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-09-20 13:07:52,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:07:52,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:07:52,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:07:52,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:07:52,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:07:52,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:07:52,142 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:07:52,142 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:07:52,142 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:07:52,142 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:07:52,142 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:07:52,142 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:07:52,142 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:07:52,143 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:07:52,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:07:52,143 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:07:52,143 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:07:52,143 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:07:52,144 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:07:52,144 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:07:52,144 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:07:52,144 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:07:52,144 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:07:52,144 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-20 13:07:52,144 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:07:52,145 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:07:52,145 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:07:52,145 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:07:52,145 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:07:52,145 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:07:52,146 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:07:52,146 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:07:52,146 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:07:52,146 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:07:52,146 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:07:52,146 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:07:52,146 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:07:52,147 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:07:52,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:07:52,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:07:52,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:07:52,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:07:52,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:07:52,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:07:52,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:07:52,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:07:52,148 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:07:52,148 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:07:52,148 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:07:52,149 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:07:52,149 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:07:52,149 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:07:52,149 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:07:52,149 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:07:52,149 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:07:52,149 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:07:52,150 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:07:52,150 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:07:52,150 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:07:52,150 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:07:52,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:07:52,150 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:07:52,151 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:07:52,151 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:07:52,151 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:07:52,151 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:07:52,151 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:07:52,151 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:07:52,151 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:07:52,152 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:07:52,152 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:07:52,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:07:52,152 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:07:52,152 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:07:52,152 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:07:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:07:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:07:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:07:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:07:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:07:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-20 13:07:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:07:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:07:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:07:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:07:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:07:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:07:52,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:07:52,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:07:52,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:07:52,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:07:52,155 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:07:52,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:07:52,155 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:07:52,156 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:07:52,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:07:52,156 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:07:52,156 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:07:52,156 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:07:52,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:07:52,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:07:52,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:07:53,194 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:07:53,194 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:07:53,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:53 BoogieIcfgContainer [2019-09-20 13:07:53,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:07:53,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:07:53,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:07:53,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:07:53,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:07:51" (1/3) ... [2019-09-20 13:07:53,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b0a199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:53, skipping insertion in model container [2019-09-20 13:07:53,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:51" (2/3) ... [2019-09-20 13:07:53,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b0a199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:53, skipping insertion in model container [2019-09-20 13:07:53,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:53" (3/3) ... [2019-09-20 13:07:53,206 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product54.cil.c [2019-09-20 13:07:53,215 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:07:53,225 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:07:53,242 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:07:53,276 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:07:53,277 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:07:53,277 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:07:53,277 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:07:53,278 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:07:53,278 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:07:53,278 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:07:53,278 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:07:53,278 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:07:53,301 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states. [2019-09-20 13:07:53,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:07:53,311 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:53,312 INFO L407 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] [2019-09-20 13:07:53,314 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:53,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:53,320 INFO L82 PathProgramCache]: Analyzing trace with hash -404445524, now seen corresponding path program 1 times [2019-09-20 13:07:53,322 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:53,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:53,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:53,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:53,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:53,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:53,681 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:53,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:07:53,686 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:07:53,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:07:53,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:07:53,702 INFO L87 Difference]: Start difference. First operand 203 states. Second operand 2 states. [2019-09-20 13:07:53,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:53,745 INFO L93 Difference]: Finished difference Result 316 states and 389 transitions. [2019-09-20 13:07:53,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:07:53,747 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:07:53,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:53,760 INFO L225 Difference]: With dead ends: 316 [2019-09-20 13:07:53,760 INFO L226 Difference]: Without dead ends: 160 [2019-09-20 13:07:53,766 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:07:53,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-09-20 13:07:53,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2019-09-20 13:07:53,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2019-09-20 13:07:53,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 188 transitions. [2019-09-20 13:07:53,821 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 188 transitions. Word has length 59 [2019-09-20 13:07:53,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:53,822 INFO L475 AbstractCegarLoop]: Abstraction has 160 states and 188 transitions. [2019-09-20 13:07:53,822 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:07:53,822 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 188 transitions. [2019-09-20 13:07:53,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:07:53,827 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:53,827 INFO L407 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] [2019-09-20 13:07:53,831 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:53,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:53,832 INFO L82 PathProgramCache]: Analyzing trace with hash -315023676, now seen corresponding path program 1 times [2019-09-20 13:07:53,832 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:53,832 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:53,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:53,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:53,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:54,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:54,010 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:54,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:07:54,013 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:07:54,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:07:54,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:07:54,014 INFO L87 Difference]: Start difference. First operand 160 states and 188 transitions. Second operand 3 states. [2019-09-20 13:07:54,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:54,065 INFO L93 Difference]: Finished difference Result 261 states and 307 transitions. [2019-09-20 13:07:54,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:07:54,066 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:07:54,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:54,069 INFO L225 Difference]: With dead ends: 261 [2019-09-20 13:07:54,069 INFO L226 Difference]: Without dead ends: 151 [2019-09-20 13:07:54,071 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:07:54,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-09-20 13:07:54,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2019-09-20 13:07:54,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-09-20 13:07:54,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 176 transitions. [2019-09-20 13:07:54,092 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 176 transitions. Word has length 60 [2019-09-20 13:07:54,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:54,093 INFO L475 AbstractCegarLoop]: Abstraction has 151 states and 176 transitions. [2019-09-20 13:07:54,093 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:07:54,093 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 176 transitions. [2019-09-20 13:07:54,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-20 13:07:54,096 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:54,096 INFO L407 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] [2019-09-20 13:07:54,096 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:54,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:54,097 INFO L82 PathProgramCache]: Analyzing trace with hash 649722396, now seen corresponding path program 1 times [2019-09-20 13:07:54,097 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:54,097 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:54,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:54,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:54,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:54,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:54,276 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:54,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:07:54,276 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:07:54,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:07:54,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:54,278 INFO L87 Difference]: Start difference. First operand 151 states and 176 transitions. Second operand 7 states. [2019-09-20 13:07:54,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:54,677 INFO L93 Difference]: Finished difference Result 274 states and 325 transitions. [2019-09-20 13:07:54,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:07:54,682 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-20 13:07:54,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:54,686 INFO L225 Difference]: With dead ends: 274 [2019-09-20 13:07:54,686 INFO L226 Difference]: Without dead ends: 151 [2019-09-20 13:07:54,688 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:07:54,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-09-20 13:07:54,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2019-09-20 13:07:54,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-09-20 13:07:54,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 175 transitions. [2019-09-20 13:07:54,721 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 175 transitions. Word has length 65 [2019-09-20 13:07:54,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:54,724 INFO L475 AbstractCegarLoop]: Abstraction has 151 states and 175 transitions. [2019-09-20 13:07:54,724 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:07:54,725 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 175 transitions. [2019-09-20 13:07:54,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-09-20 13:07:54,734 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:54,735 INFO L407 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] [2019-09-20 13:07:54,735 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:54,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:54,738 INFO L82 PathProgramCache]: Analyzing trace with hash 2071838844, now seen corresponding path program 1 times [2019-09-20 13:07:54,738 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:54,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:54,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:54,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:54,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:54,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:54,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:54,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:07:54,919 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:07:54,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:07:54,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:07:54,920 INFO L87 Difference]: Start difference. First operand 151 states and 175 transitions. Second operand 5 states. [2019-09-20 13:07:55,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:55,477 INFO L93 Difference]: Finished difference Result 388 states and 469 transitions. [2019-09-20 13:07:55,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:07:55,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2019-09-20 13:07:55,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:55,484 INFO L225 Difference]: With dead ends: 388 [2019-09-20 13:07:55,484 INFO L226 Difference]: Without dead ends: 265 [2019-09-20 13:07:55,489 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:07:55,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2019-09-20 13:07:55,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 246. [2019-09-20 13:07:55,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2019-09-20 13:07:55,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 280 transitions. [2019-09-20 13:07:55,521 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 280 transitions. Word has length 83 [2019-09-20 13:07:55,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:55,521 INFO L475 AbstractCegarLoop]: Abstraction has 246 states and 280 transitions. [2019-09-20 13:07:55,521 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:07:55,522 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 280 transitions. [2019-09-20 13:07:55,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-20 13:07:55,527 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:55,528 INFO L407 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] [2019-09-20 13:07:55,528 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:55,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:55,528 INFO L82 PathProgramCache]: Analyzing trace with hash 477615551, now seen corresponding path program 1 times [2019-09-20 13:07:55,528 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:55,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:55,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:55,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:55,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:55,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:07:55,658 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:55,658 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:07:55,659 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:07:55,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:07:55,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:55,660 INFO L87 Difference]: Start difference. First operand 246 states and 280 transitions. Second operand 7 states. [2019-09-20 13:07:56,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:56,362 INFO L93 Difference]: Finished difference Result 482 states and 565 transitions. [2019-09-20 13:07:56,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:07:56,362 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2019-09-20 13:07:56,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:56,365 INFO L225 Difference]: With dead ends: 482 [2019-09-20 13:07:56,365 INFO L226 Difference]: Without dead ends: 264 [2019-09-20 13:07:56,367 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:07:56,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2019-09-20 13:07:56,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 245. [2019-09-20 13:07:56,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2019-09-20 13:07:56,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 277 transitions. [2019-09-20 13:07:56,389 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 277 transitions. Word has length 97 [2019-09-20 13:07:56,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:56,390 INFO L475 AbstractCegarLoop]: Abstraction has 245 states and 277 transitions. [2019-09-20 13:07:56,390 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:07:56,390 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 277 transitions. [2019-09-20 13:07:56,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-20 13:07:56,392 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:56,392 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:56,392 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:56,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:56,392 INFO L82 PathProgramCache]: Analyzing trace with hash 115684108, now seen corresponding path program 1 times [2019-09-20 13:07:56,393 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:56,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:56,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:56,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:56,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:56,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:56,463 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:56,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:07:56,464 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:07:56,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:07:56,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:07:56,465 INFO L87 Difference]: Start difference. First operand 245 states and 277 transitions. Second operand 6 states. [2019-09-20 13:07:56,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:56,501 INFO L93 Difference]: Finished difference Result 467 states and 537 transitions. [2019-09-20 13:07:56,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:07:56,501 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-09-20 13:07:56,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:56,504 INFO L225 Difference]: With dead ends: 467 [2019-09-20 13:07:56,505 INFO L226 Difference]: Without dead ends: 250 [2019-09-20 13:07:56,506 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:56,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2019-09-20 13:07:56,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2019-09-20 13:07:56,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2019-09-20 13:07:56,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 282 transitions. [2019-09-20 13:07:56,524 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 282 transitions. Word has length 98 [2019-09-20 13:07:56,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:56,525 INFO L475 AbstractCegarLoop]: Abstraction has 250 states and 282 transitions. [2019-09-20 13:07:56,525 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:07:56,525 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 282 transitions. [2019-09-20 13:07:56,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-20 13:07:56,526 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:56,527 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:56,527 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:56,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:56,527 INFO L82 PathProgramCache]: Analyzing trace with hash 43297550, now seen corresponding path program 1 times [2019-09-20 13:07:56,527 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:56,528 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:56,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:56,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:56,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:56,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:56,625 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:56,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:07:56,626 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:07:56,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:07:56,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:07:56,627 INFO L87 Difference]: Start difference. First operand 250 states and 282 transitions. Second operand 8 states. [2019-09-20 13:07:56,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:56,664 INFO L93 Difference]: Finished difference Result 479 states and 555 transitions. [2019-09-20 13:07:56,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:07:56,665 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2019-09-20 13:07:56,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:56,668 INFO L225 Difference]: With dead ends: 479 [2019-09-20 13:07:56,668 INFO L226 Difference]: Without dead ends: 257 [2019-09-20 13:07:56,669 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:07:56,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2019-09-20 13:07:56,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 254. [2019-09-20 13:07:56,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2019-09-20 13:07:56,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 286 transitions. [2019-09-20 13:07:56,689 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 286 transitions. Word has length 98 [2019-09-20 13:07:56,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:56,690 INFO L475 AbstractCegarLoop]: Abstraction has 254 states and 286 transitions. [2019-09-20 13:07:56,690 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:07:56,690 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 286 transitions. [2019-09-20 13:07:56,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-20 13:07:56,692 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:56,693 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:56,693 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:56,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:56,693 INFO L82 PathProgramCache]: Analyzing trace with hash 373063311, now seen corresponding path program 1 times [2019-09-20 13:07:56,693 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:56,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:56,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:56,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:56,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:56,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:56,809 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:56,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:07:56,811 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:07:56,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:07:56,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:07:56,813 INFO L87 Difference]: Start difference. First operand 254 states and 286 transitions. Second operand 4 states. [2019-09-20 13:07:57,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:57,046 INFO L93 Difference]: Finished difference Result 748 states and 882 transitions. [2019-09-20 13:07:57,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:07:57,052 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2019-09-20 13:07:57,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:57,056 INFO L225 Difference]: With dead ends: 748 [2019-09-20 13:07:57,056 INFO L226 Difference]: Without dead ends: 522 [2019-09-20 13:07:57,057 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:07:57,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2019-09-20 13:07:57,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 513. [2019-09-20 13:07:57,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2019-09-20 13:07:57,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 593 transitions. [2019-09-20 13:07:57,093 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 593 transitions. Word has length 98 [2019-09-20 13:07:57,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:57,094 INFO L475 AbstractCegarLoop]: Abstraction has 513 states and 593 transitions. [2019-09-20 13:07:57,094 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:07:57,094 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 593 transitions. [2019-09-20 13:07:57,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-20 13:07:57,096 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:57,096 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:57,096 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:57,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:57,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1661296137, now seen corresponding path program 1 times [2019-09-20 13:07:57,097 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:57,097 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:57,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:57,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:57,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:57,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:57,237 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:57,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:07:57,237 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:07:57,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:07:57,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:07:57,238 INFO L87 Difference]: Start difference. First operand 513 states and 593 transitions. Second operand 9 states. [2019-09-20 13:07:58,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:58,644 INFO L93 Difference]: Finished difference Result 1344 states and 1622 transitions. [2019-09-20 13:07:58,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:07:58,645 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2019-09-20 13:07:58,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:58,650 INFO L225 Difference]: With dead ends: 1344 [2019-09-20 13:07:58,651 INFO L226 Difference]: Without dead ends: 936 [2019-09-20 13:07:58,653 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:07:58,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2019-09-20 13:07:58,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 852. [2019-09-20 13:07:58,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2019-09-20 13:07:58,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 973 transitions. [2019-09-20 13:07:58,712 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 973 transitions. Word has length 102 [2019-09-20 13:07:58,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:58,713 INFO L475 AbstractCegarLoop]: Abstraction has 852 states and 973 transitions. [2019-09-20 13:07:58,713 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:07:58,713 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 973 transitions. [2019-09-20 13:07:58,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-09-20 13:07:58,716 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:58,717 INFO L407 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:58,717 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:58,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:58,717 INFO L82 PathProgramCache]: Analyzing trace with hash -577396182, now seen corresponding path program 1 times [2019-09-20 13:07:58,718 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:58,718 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:58,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:58,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:58,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:58,859 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-20 13:07:58,859 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:58,859 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:58,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:59,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-20 13:07:59,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:59,252 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 30 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:07:59,258 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:59,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-09-20 13:07:59,259 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-20 13:07:59,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-20 13:07:59,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-09-20 13:07:59,260 INFO L87 Difference]: Start difference. First operand 852 states and 973 transitions. Second operand 16 states. [2019-09-20 13:08:00,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:00,475 INFO L93 Difference]: Finished difference Result 1911 states and 2260 transitions. [2019-09-20 13:08:00,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-09-20 13:08:00,477 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 180 [2019-09-20 13:08:00,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:00,484 INFO L225 Difference]: With dead ends: 1911 [2019-09-20 13:08:00,485 INFO L226 Difference]: Without dead ends: 1162 [2019-09-20 13:08:00,488 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2019-09-20 13:08:00,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2019-09-20 13:08:00,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1018. [2019-09-20 13:08:00,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1018 states. [2019-09-20 13:08:00,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1173 transitions. [2019-09-20 13:08:00,557 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1173 transitions. Word has length 180 [2019-09-20 13:08:00,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:00,558 INFO L475 AbstractCegarLoop]: Abstraction has 1018 states and 1173 transitions. [2019-09-20 13:08:00,558 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-20 13:08:00,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1173 transitions. [2019-09-20 13:08:00,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2019-09-20 13:08:00,565 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:00,565 INFO L407 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:00,565 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:00,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:00,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1633838389, now seen corresponding path program 1 times [2019-09-20 13:08:00,566 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:00,566 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:00,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:00,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:00,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:00,945 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2019-09-20 13:08:00,945 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:00,945 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:01,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:01,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-20 13:08:01,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:01,603 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 212 proven. 4 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-09-20 13:08:01,617 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:01,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2019-09-20 13:08:01,621 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-20 13:08:01,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-20 13:08:01,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:08:01,623 INFO L87 Difference]: Start difference. First operand 1018 states and 1173 transitions. Second operand 19 states. [2019-09-20 13:08:08,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:08,264 INFO L93 Difference]: Finished difference Result 3843 states and 5322 transitions. [2019-09-20 13:08:08,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-09-20 13:08:08,265 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 305 [2019-09-20 13:08:08,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:08,284 INFO L225 Difference]: With dead ends: 3843 [2019-09-20 13:08:08,284 INFO L226 Difference]: Without dead ends: 2861 [2019-09-20 13:08:08,291 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=523, Invalid=3137, Unknown=0, NotChecked=0, Total=3660 [2019-09-20 13:08:08,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2019-09-20 13:08:08,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 1990. [2019-09-20 13:08:08,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1990 states. [2019-09-20 13:08:08,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 2221 transitions. [2019-09-20 13:08:08,476 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 2221 transitions. Word has length 305 [2019-09-20 13:08:08,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:08,477 INFO L475 AbstractCegarLoop]: Abstraction has 1990 states and 2221 transitions. [2019-09-20 13:08:08,477 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-20 13:08:08,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 2221 transitions. [2019-09-20 13:08:08,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2019-09-20 13:08:08,486 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:08,486 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:08,487 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:08,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:08,487 INFO L82 PathProgramCache]: Analyzing trace with hash -895375909, now seen corresponding path program 1 times [2019-09-20 13:08:08,487 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:08,487 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:08,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:08,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:08,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:08,734 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 100 proven. 61 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2019-09-20 13:08:08,735 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:08,735 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:08,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:08,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 1339 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-20 13:08:08,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:09,144 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 249 proven. 18 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (4)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:08:09,154 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:09,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2019-09-20 13:08:09,155 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-20 13:08:09,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-20 13:08:09,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2019-09-20 13:08:09,156 INFO L87 Difference]: Start difference. First operand 1990 states and 2221 transitions. Second operand 20 states. [2019-09-20 13:08:11,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:11,092 INFO L93 Difference]: Finished difference Result 3770 states and 4227 transitions. [2019-09-20 13:08:11,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:08:11,092 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 321 [2019-09-20 13:08:11,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:11,105 INFO L225 Difference]: With dead ends: 3770 [2019-09-20 13:08:11,105 INFO L226 Difference]: Without dead ends: 1994 [2019-09-20 13:08:11,110 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2019-09-20 13:08:11,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2019-09-20 13:08:11,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1990. [2019-09-20 13:08:11,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1990 states. [2019-09-20 13:08:11,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 2216 transitions. [2019-09-20 13:08:11,218 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 2216 transitions. Word has length 321 [2019-09-20 13:08:11,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:11,221 INFO L475 AbstractCegarLoop]: Abstraction has 1990 states and 2216 transitions. [2019-09-20 13:08:11,221 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-20 13:08:11,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 2216 transitions. [2019-09-20 13:08:11,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2019-09-20 13:08:11,229 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:11,230 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:11,230 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:11,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:11,230 INFO L82 PathProgramCache]: Analyzing trace with hash -813773208, now seen corresponding path program 1 times [2019-09-20 13:08:11,231 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:11,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:11,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:11,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:11,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:11,642 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 98 proven. 46 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-09-20 13:08:11,642 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:11,643 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:11,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:11,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 1339 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-20 13:08:11,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:12,035 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 175 proven. 16 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:08:12,044 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:12,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 14 [2019-09-20 13:08:12,045 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-20 13:08:12,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-20 13:08:12,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:08:12,046 INFO L87 Difference]: Start difference. First operand 1990 states and 2216 transitions. Second operand 14 states. [2019-09-20 13:08:14,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:14,535 INFO L93 Difference]: Finished difference Result 4294 states and 5205 transitions. [2019-09-20 13:08:14,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-09-20 13:08:14,535 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 322 [2019-09-20 13:08:14,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:14,554 INFO L225 Difference]: With dead ends: 4294 [2019-09-20 13:08:14,555 INFO L226 Difference]: Without dead ends: 3165 [2019-09-20 13:08:14,560 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 341 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2019-09-20 13:08:14,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3165 states. [2019-09-20 13:08:14,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3165 to 2465. [2019-09-20 13:08:14,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2019-09-20 13:08:14,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 2750 transitions. [2019-09-20 13:08:14,811 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 2750 transitions. Word has length 322 [2019-09-20 13:08:14,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:14,814 INFO L475 AbstractCegarLoop]: Abstraction has 2465 states and 2750 transitions. [2019-09-20 13:08:14,814 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-20 13:08:14,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 2750 transitions. [2019-09-20 13:08:14,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2019-09-20 13:08:14,825 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:14,825 INFO L407 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:14,826 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:14,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:14,826 INFO L82 PathProgramCache]: Analyzing trace with hash -161527163, now seen corresponding path program 1 times [2019-09-20 13:08:14,826 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:14,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:14,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:14,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:14,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:15,121 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 122 proven. 76 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2019-09-20 13:08:15,122 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:15,122 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:15,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:15,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 1520 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-20 13:08:15,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:15,474 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:08:15,559 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 375 proven. 18 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2019-09-20 13:08:15,564 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:15,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2019-09-20 13:08:15,565 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-20 13:08:15,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-20 13:08:15,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2019-09-20 13:08:15,566 INFO L87 Difference]: Start difference. First operand 2465 states and 2750 transitions. Second operand 15 states. [2019-09-20 13:08:18,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:18,247 INFO L93 Difference]: Finished difference Result 6762 states and 8028 transitions. [2019-09-20 13:08:18,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-20 13:08:18,248 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 396 [2019-09-20 13:08:18,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:18,274 INFO L225 Difference]: With dead ends: 6762 [2019-09-20 13:08:18,274 INFO L226 Difference]: Without dead ends: 4467 [2019-09-20 13:08:18,282 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 397 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2019-09-20 13:08:18,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4467 states. [2019-09-20 13:08:18,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4467 to 3587. [2019-09-20 13:08:18,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3587 states. [2019-09-20 13:08:18,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3587 states to 3587 states and 3988 transitions. [2019-09-20 13:08:18,524 INFO L78 Accepts]: Start accepts. Automaton has 3587 states and 3988 transitions. Word has length 396 [2019-09-20 13:08:18,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:18,524 INFO L475 AbstractCegarLoop]: Abstraction has 3587 states and 3988 transitions. [2019-09-20 13:08:18,524 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-20 13:08:18,525 INFO L276 IsEmpty]: Start isEmpty. Operand 3587 states and 3988 transitions. [2019-09-20 13:08:18,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2019-09-20 13:08:18,539 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:18,540 INFO L407 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:18,540 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:18,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:18,540 INFO L82 PathProgramCache]: Analyzing trace with hash 522433543, now seen corresponding path program 1 times [2019-09-20 13:08:18,540 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:18,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:18,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:18,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:18,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:18,877 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 114 proven. 16 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2019-09-20 13:08:18,877 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:18,877 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:18,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:19,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 1521 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-20 13:08:19,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:19,405 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 299 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2019-09-20 13:08:19,418 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:08:19,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2019-09-20 13:08:19,420 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-20 13:08:19,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-20 13:08:19,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:08:19,421 INFO L87 Difference]: Start difference. First operand 3587 states and 3988 transitions. Second operand 13 states. [2019-09-20 13:08:19,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:19,519 INFO L93 Difference]: Finished difference Result 4219 states and 4668 transitions. [2019-09-20 13:08:19,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:08:19,520 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 396 [2019-09-20 13:08:19,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:19,521 INFO L225 Difference]: With dead ends: 4219 [2019-09-20 13:08:19,521 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:08:19,531 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:08:19,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:08:19,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:08:19,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:08:19,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:08:19,532 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 396 [2019-09-20 13:08:19,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:19,533 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:08:19,533 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-20 13:08:19,533 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:08:19,533 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:08:19,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-20 13:08:20,098 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 89 [2019-09-20 13:08:20,688 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 89 [2019-09-20 13:08:21,634 WARN L191 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 28 [2019-09-20 13:08:21,952 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 27 [2019-09-20 13:08:22,169 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 24 [2019-09-20 13:08:22,469 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 31 [2019-09-20 13:08:22,729 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 30