/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:07:24,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:07:24,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:07:24,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:07:24,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:07:24,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:07:24,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:07:24,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:07:24,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:07:24,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:07:24,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:07:24,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:07:24,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:07:24,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:07:24,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:07:24,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:07:24,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:07:24,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:07:24,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:07:24,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:07:24,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:07:24,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:07:24,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:07:24,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:07:24,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:07:24,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:07:24,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:07:24,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:07:24,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:07:24,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:07:24,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:07:24,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:07:24,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:07:24,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:07:24,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:07:24,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:07:24,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:07:24,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:07:24,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:07:24,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:07:24,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:07:24,364 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 [2019-11-06 22:07:24,387 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:07:24,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:07:24,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:07:24,391 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:07:24,391 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:07:24,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:07:24,391 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:07:24,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:07:24,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:07:24,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:07:24,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:07:24,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:07:24,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:07:24,392 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:07:24,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:07:24,392 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:07:24,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:07:24,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:07:24,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:07:24,394 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:07:24,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:07:24,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:07:24,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:07:24,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:07:24,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:07:24,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:07:24,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:07:24,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:07:24,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:07:24,682 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:07:24,700 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:07:24,704 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:07:24,706 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:07:24,706 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:07:24,707 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product48.cil.c [2019-11-06 22:07:24,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2ba176c5/58dd2fe0b375486596db9174b02b8f5a/FLAGb59653622 [2019-11-06 22:07:25,328 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:07:25,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product48.cil.c [2019-11-06 22:07:25,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2ba176c5/58dd2fe0b375486596db9174b02b8f5a/FLAGb59653622 [2019-11-06 22:07:25,595 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2ba176c5/58dd2fe0b375486596db9174b02b8f5a [2019-11-06 22:07:25,605 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:07:25,607 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:07:25,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:07:25,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:07:25,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:07:25,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:07:25" (1/1) ... [2019-11-06 22:07:25,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10a68477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:25, skipping insertion in model container [2019-11-06 22:07:25,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:07:25" (1/1) ... [2019-11-06 22:07:25,621 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:07:25,670 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:07:26,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:07:26,153 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:07:26,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:07:26,292 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:07:26,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:26 WrapperNode [2019-11-06 22:07:26,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:07:26,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:07:26,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:07:26,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:07:26,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:26" (1/1) ... [2019-11-06 22:07:26,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:26" (1/1) ... [2019-11-06 22:07:26,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:26" (1/1) ... [2019-11-06 22:07:26,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:26" (1/1) ... [2019-11-06 22:07:26,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:26" (1/1) ... [2019-11-06 22:07:26,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:26" (1/1) ... [2019-11-06 22:07:26,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:26" (1/1) ... [2019-11-06 22:07:26,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:07:26,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:07:26,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:07:26,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:07:26,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:26" (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 [2019-11-06 22:07:26,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:07:26,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:07:26,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 22:07:26,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 22:07:26,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 22:07:26,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 22:07:26,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 22:07:26,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 22:07:26,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 22:07:26,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 22:07:26,440 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 22:07:26,441 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 22:07:26,441 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 22:07:26,441 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-11-06 22:07:26,441 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 22:07:26,441 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-11-06 22:07:26,441 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 22:07:26,442 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 22:07:26,442 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 22:07:26,442 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 22:07:26,442 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 22:07:26,442 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 22:07:26,442 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-11-06 22:07:26,443 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-11-06 22:07:26,443 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 22:07:26,443 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 22:07:26,443 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 22:07:26,443 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 22:07:26,444 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 22:07:26,444 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 22:07:26,444 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 22:07:26,444 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 22:07:26,444 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 22:07:26,444 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 22:07:26,444 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 22:07:26,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:07:26,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-11-06 22:07:26,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-11-06 22:07:26,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-11-06 22:07:26,445 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 22:07:26,445 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 22:07:26,445 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 22:07:26,446 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 22:07:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:07:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:07:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 22:07:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 22:07:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 22:07:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 22:07:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 22:07:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 22:07:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 22:07:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:07:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 22:07:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 22:07:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:07:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 22:07:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 22:07:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:07:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 22:07:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 22:07:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:07:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 22:07:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 22:07:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 22:07:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 22:07:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-11-06 22:07:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-11-06 22:07:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 22:07:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 22:07:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 22:07:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 22:07:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 22:07:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 22:07:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 22:07:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 22:07:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 22:07:26,451 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 22:07:26,451 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 22:07:26,451 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-11-06 22:07:26,451 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-11-06 22:07:26,451 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 22:07:26,451 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 22:07:26,452 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 22:07:26,452 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-11-06 22:07:26,452 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 22:07:26,452 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-11-06 22:07:26,452 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 22:07:26,452 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 22:07:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 22:07:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-11-06 22:07:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 22:07:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 22:07:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 22:07:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 22:07:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:07:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 22:07:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:07:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 22:07:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:07:27,528 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:07:27,529 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 22:07:27,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:07:27 BoogieIcfgContainer [2019-11-06 22:07:27,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:07:27,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:07:27,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:07:27,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:07:27,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:07:25" (1/3) ... [2019-11-06 22:07:27,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585842ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:07:27, skipping insertion in model container [2019-11-06 22:07:27,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:26" (2/3) ... [2019-11-06 22:07:27,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585842ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:07:27, skipping insertion in model container [2019-11-06 22:07:27,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:07:27" (3/3) ... [2019-11-06 22:07:27,540 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product48.cil.c [2019-11-06 22:07:27,551 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:07:27,560 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:07:27,571 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:07:27,604 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:07:27,604 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:07:27,604 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:07:27,604 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:07:27,605 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:07:27,605 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:07:27,605 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:07:27,605 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:07:27,628 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2019-11-06 22:07:27,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-06 22:07:27,639 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:07:27,640 INFO L410 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] [2019-11-06 22:07:27,642 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:07:27,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:07:27,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1391539258, now seen corresponding path program 1 times [2019-11-06 22:07:27,654 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:07:27,654 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409679321] [2019-11-06 22:07:27,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:07:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:28,356 WARN L191 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:07:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:28,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:07:28,498 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409679321] [2019-11-06 22:07:28,499 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:07:28,500 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:07:28,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157095206] [2019-11-06 22:07:28,509 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:07:28,510 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:07:28,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:07:28,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:07:28,529 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 4 states. [2019-11-06 22:07:29,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:07:29,837 INFO L93 Difference]: Finished difference Result 340 states and 436 transitions. [2019-11-06 22:07:29,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:07:29,840 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2019-11-06 22:07:29,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:07:29,856 INFO L225 Difference]: With dead ends: 340 [2019-11-06 22:07:29,856 INFO L226 Difference]: Without dead ends: 188 [2019-11-06 22:07:29,861 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:07:29,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2019-11-06 22:07:29,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 153. [2019-11-06 22:07:29,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-11-06 22:07:29,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 180 transitions. [2019-11-06 22:07:29,972 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 180 transitions. Word has length 59 [2019-11-06 22:07:29,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:07:29,973 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 180 transitions. [2019-11-06 22:07:29,973 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:07:29,974 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 180 transitions. [2019-11-06 22:07:29,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-06 22:07:29,985 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:07:29,985 INFO L410 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] [2019-11-06 22:07:29,986 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:07:29,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:07:29,986 INFO L82 PathProgramCache]: Analyzing trace with hash 404948371, now seen corresponding path program 1 times [2019-11-06 22:07:29,986 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:07:29,987 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009124560] [2019-11-06 22:07:29,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:07:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:30,426 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:07:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:30,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:07:30,480 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009124560] [2019-11-06 22:07:30,480 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:07:30,480 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:07:30,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542873278] [2019-11-06 22:07:30,497 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:07:30,498 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:07:30,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:07:30,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:07:30,498 INFO L87 Difference]: Start difference. First operand 153 states and 180 transitions. Second operand 5 states. [2019-11-06 22:07:31,054 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:07:32,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:07:32,104 INFO L93 Difference]: Finished difference Result 275 states and 336 transitions. [2019-11-06 22:07:32,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:07:32,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2019-11-06 22:07:32,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:07:32,109 INFO L225 Difference]: With dead ends: 275 [2019-11-06 22:07:32,109 INFO L226 Difference]: Without dead ends: 178 [2019-11-06 22:07:32,111 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:07:32,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2019-11-06 22:07:32,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 144. [2019-11-06 22:07:32,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-06 22:07:32,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2019-11-06 22:07:32,145 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 60 [2019-11-06 22:07:32,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:07:32,145 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2019-11-06 22:07:32,146 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:07:32,146 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2019-11-06 22:07:32,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-06 22:07:32,147 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:07:32,148 INFO L410 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] [2019-11-06 22:07:32,148 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:07:32,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:07:32,148 INFO L82 PathProgramCache]: Analyzing trace with hash 539093391, now seen corresponding path program 1 times [2019-11-06 22:07:32,149 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:07:32,149 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208335701] [2019-11-06 22:07:32,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:07:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:32,478 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:07:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:32,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:07:32,620 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208335701] [2019-11-06 22:07:32,620 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:07:32,620 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:07:32,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261213522] [2019-11-06 22:07:32,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 22:07:32,621 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:07:32,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 22:07:32,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:07:32,622 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand 9 states. [2019-11-06 22:07:33,083 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:07:33,420 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 22:07:33,691 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:07:33,952 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:07:34,927 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:07:37,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:07:37,097 INFO L93 Difference]: Finished difference Result 485 states and 599 transitions. [2019-11-06 22:07:37,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 22:07:37,098 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2019-11-06 22:07:37,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:07:37,103 INFO L225 Difference]: With dead ends: 485 [2019-11-06 22:07:37,103 INFO L226 Difference]: Without dead ends: 369 [2019-11-06 22:07:37,104 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-11-06 22:07:37,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2019-11-06 22:07:37,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 304. [2019-11-06 22:07:37,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2019-11-06 22:07:37,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 368 transitions. [2019-11-06 22:07:37,180 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 368 transitions. Word has length 65 [2019-11-06 22:07:37,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:07:37,181 INFO L462 AbstractCegarLoop]: Abstraction has 304 states and 368 transitions. [2019-11-06 22:07:37,181 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 22:07:37,181 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 368 transitions. [2019-11-06 22:07:37,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-11-06 22:07:37,182 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:07:37,183 INFO L410 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] [2019-11-06 22:07:37,183 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:07:37,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:07:37,183 INFO L82 PathProgramCache]: Analyzing trace with hash -652418830, now seen corresponding path program 1 times [2019-11-06 22:07:37,184 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:07:37,184 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605315956] [2019-11-06 22:07:37,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:07:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:37,480 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:07:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:07:37,576 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605315956] [2019-11-06 22:07:37,576 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:07:37,576 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:07:37,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255124751] [2019-11-06 22:07:37,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 22:07:37,577 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:07:37,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 22:07:37,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:07:37,578 INFO L87 Difference]: Start difference. First operand 304 states and 368 transitions. Second operand 9 states. [2019-11-06 22:07:38,136 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:07:38,885 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:07:39,933 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:07:40,193 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:07:40,523 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:07:40,881 WARN L191 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:07:41,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:07:41,773 INFO L93 Difference]: Finished difference Result 795 states and 1028 transitions. [2019-11-06 22:07:41,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-06 22:07:41,774 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2019-11-06 22:07:41,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:07:41,779 INFO L225 Difference]: With dead ends: 795 [2019-11-06 22:07:41,779 INFO L226 Difference]: Without dead ends: 519 [2019-11-06 22:07:41,782 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-11-06 22:07:41,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2019-11-06 22:07:41,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 451. [2019-11-06 22:07:41,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2019-11-06 22:07:41,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 537 transitions. [2019-11-06 22:07:41,903 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 537 transitions. Word has length 70 [2019-11-06 22:07:41,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:07:41,903 INFO L462 AbstractCegarLoop]: Abstraction has 451 states and 537 transitions. [2019-11-06 22:07:41,903 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 22:07:41,903 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 537 transitions. [2019-11-06 22:07:41,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-11-06 22:07:41,905 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:07:41,906 INFO L410 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, 1, 1, 1, 1, 1, 1] [2019-11-06 22:07:41,906 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:07:41,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:07:41,906 INFO L82 PathProgramCache]: Analyzing trace with hash -918633805, now seen corresponding path program 1 times [2019-11-06 22:07:41,906 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:07:41,907 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961384133] [2019-11-06 22:07:41,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:07:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:42,213 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:07:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:42,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:07:42,439 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961384133] [2019-11-06 22:07:42,439 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:07:42,439 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:07:42,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544458168] [2019-11-06 22:07:42,441 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 22:07:42,442 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:07:42,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 22:07:42,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:07:42,443 INFO L87 Difference]: Start difference. First operand 451 states and 537 transitions. Second operand 9 states. [2019-11-06 22:07:42,878 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:07:44,210 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:07:44,524 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-11-06 22:07:44,815 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:07:45,110 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 22:07:46,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:07:46,469 INFO L93 Difference]: Finished difference Result 1362 states and 1793 transitions. [2019-11-06 22:07:46,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-06 22:07:46,470 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2019-11-06 22:07:46,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:07:46,477 INFO L225 Difference]: With dead ends: 1362 [2019-11-06 22:07:46,478 INFO L226 Difference]: Without dead ends: 939 [2019-11-06 22:07:46,480 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2019-11-06 22:07:46,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2019-11-06 22:07:46,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 811. [2019-11-06 22:07:46,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2019-11-06 22:07:46,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 969 transitions. [2019-11-06 22:07:46,623 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 969 transitions. Word has length 108 [2019-11-06 22:07:46,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:07:46,624 INFO L462 AbstractCegarLoop]: Abstraction has 811 states and 969 transitions. [2019-11-06 22:07:46,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 22:07:46,624 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 969 transitions. [2019-11-06 22:07:46,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-11-06 22:07:46,627 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:07:46,627 INFO L410 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, 1, 1, 1, 1, 1, 1] [2019-11-06 22:07:46,627 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:07:46,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:07:46,628 INFO L82 PathProgramCache]: Analyzing trace with hash -678093676, now seen corresponding path program 1 times [2019-11-06 22:07:46,628 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:07:46,628 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339601106] [2019-11-06 22:07:46,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:07:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:46,896 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:07:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:47,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:07:47,072 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339601106] [2019-11-06 22:07:47,073 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:07:47,074 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:07:47,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662125999] [2019-11-06 22:07:47,075 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 22:07:47,076 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:07:47,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 22:07:47,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:07:47,077 INFO L87 Difference]: Start difference. First operand 811 states and 969 transitions. Second operand 9 states. [2019-11-06 22:07:48,381 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:07:48,650 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-11-06 22:07:48,927 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:07:49,181 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:07:50,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:07:50,275 INFO L93 Difference]: Finished difference Result 1729 states and 2208 transitions. [2019-11-06 22:07:50,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 22:07:50,276 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2019-11-06 22:07:50,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:07:50,285 INFO L225 Difference]: With dead ends: 1729 [2019-11-06 22:07:50,285 INFO L226 Difference]: Without dead ends: 946 [2019-11-06 22:07:50,288 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-11-06 22:07:50,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2019-11-06 22:07:50,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 831. [2019-11-06 22:07:50,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2019-11-06 22:07:50,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 989 transitions. [2019-11-06 22:07:50,449 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 989 transitions. Word has length 108 [2019-11-06 22:07:50,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:07:50,450 INFO L462 AbstractCegarLoop]: Abstraction has 831 states and 989 transitions. [2019-11-06 22:07:50,450 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 22:07:50,450 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 989 transitions. [2019-11-06 22:07:50,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-11-06 22:07:50,454 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:07:50,454 INFO L410 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, 1, 1, 1, 1, 1, 1] [2019-11-06 22:07:50,454 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:07:50,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:07:50,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1250179026, now seen corresponding path program 1 times [2019-11-06 22:07:50,455 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:07:50,456 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659636165] [2019-11-06 22:07:50,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:07:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:50,753 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:07:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:50,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:07:50,906 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659636165] [2019-11-06 22:07:50,907 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:07:50,907 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-06 22:07:50,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457614907] [2019-11-06 22:07:50,907 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-06 22:07:50,908 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:07:50,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-06 22:07:50,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:07:50,909 INFO L87 Difference]: Start difference. First operand 831 states and 989 transitions. Second operand 11 states. [2019-11-06 22:07:51,652 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:07:51,959 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:07:52,217 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:07:53,106 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:07:53,405 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:07:53,672 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:07:54,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:07:54,758 INFO L93 Difference]: Finished difference Result 1544 states and 1934 transitions. [2019-11-06 22:07:54,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-06 22:07:54,763 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2019-11-06 22:07:54,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:07:54,768 INFO L225 Difference]: With dead ends: 1544 [2019-11-06 22:07:54,768 INFO L226 Difference]: Without dead ends: 741 [2019-11-06 22:07:54,771 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-11-06 22:07:54,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2019-11-06 22:07:54,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2019-11-06 22:07:54,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2019-11-06 22:07:54,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 775 transitions. [2019-11-06 22:07:54,880 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 775 transitions. Word has length 108 [2019-11-06 22:07:54,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:07:54,881 INFO L462 AbstractCegarLoop]: Abstraction has 664 states and 775 transitions. [2019-11-06 22:07:54,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-06 22:07:54,881 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 775 transitions. [2019-11-06 22:07:54,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-06 22:07:54,885 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:07:54,885 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:07:54,885 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:07:54,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:07:54,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1890897259, now seen corresponding path program 1 times [2019-11-06 22:07:54,886 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:07:54,891 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542431913] [2019-11-06 22:07:54,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:07:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,299 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:07:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:07:55,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:07:55,472 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542431913] [2019-11-06 22:07:55,472 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:07:55,472 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 22:07:55,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588634691] [2019-11-06 22:07:55,473 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 22:07:55,473 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:07:55,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 22:07:55,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:07:55,474 INFO L87 Difference]: Start difference. First operand 664 states and 775 transitions. Second operand 12 states. [2019-11-06 22:07:55,963 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:07:56,691 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:07:57,408 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:07:57,798 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:07:58,085 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-11-06 22:07:58,430 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:07:58,763 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:08:01,077 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:08:01,398 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:02,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:08:02,110 INFO L93 Difference]: Finished difference Result 1955 states and 2469 transitions. [2019-11-06 22:08:02,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-11-06 22:08:02,111 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2019-11-06 22:08:02,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:08:02,129 INFO L225 Difference]: With dead ends: 1955 [2019-11-06 22:08:02,130 INFO L226 Difference]: Without dead ends: 1505 [2019-11-06 22:08:02,134 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2019-11-06 22:08:02,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2019-11-06 22:08:02,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1367. [2019-11-06 22:08:02,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1367 states. [2019-11-06 22:08:02,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 1597 transitions. [2019-11-06 22:08:02,447 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 1597 transitions. Word has length 112 [2019-11-06 22:08:02,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:08:02,453 INFO L462 AbstractCegarLoop]: Abstraction has 1367 states and 1597 transitions. [2019-11-06 22:08:02,454 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 22:08:02,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 1597 transitions. [2019-11-06 22:08:02,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-11-06 22:08:02,459 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:08:02,459 INFO L410 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, 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] [2019-11-06 22:08:02,459 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:08:02,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:08:02,460 INFO L82 PathProgramCache]: Analyzing trace with hash 828062466, now seen corresponding path program 1 times [2019-11-06 22:08:02,460 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:08:02,461 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387190058] [2019-11-06 22:08:02,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:08:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:02,809 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:08:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,190 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-06 22:08:03,190 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387190058] [2019-11-06 22:08:03,191 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853599858] [2019-11-06 22:08:03,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:08:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:03,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-06 22:08:03,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:08:03,673 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:08:03,673 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:08:03,673 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 20 [2019-11-06 22:08:03,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250393071] [2019-11-06 22:08:03,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-06 22:08:03,675 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:08:03,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-06 22:08:03,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2019-11-06 22:08:03,675 INFO L87 Difference]: Start difference. First operand 1367 states and 1597 transitions. Second operand 20 states.