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_spec3_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:36:35,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:36:35,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:36:35,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:36:35,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:36:35,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:36:35,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:36:35,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:36:35,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:36:35,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:36:35,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:36:35,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:36:35,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:36:35,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:36:35,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:36:35,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:36:35,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:36:35,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:36:35,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:36:35,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:36:35,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:36:35,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:36:35,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:36:35,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:36:35,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:36:35,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:36:35,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:36:35,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:36:35,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:36:35,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:36:35,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:36:35,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:36:35,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:36:35,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:36:35,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:36:35,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:36:35,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:36:35,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:36:35,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:36:35,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:36:35,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:36:35,358 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 [2019-10-14 23:36:35,372 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:36:35,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:36:35,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:36:35,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:36:35,374 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:36:35,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:36:35,375 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:36:35,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:36:35,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:36:35,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:36:35,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:36:35,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:36:35,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:36:35,376 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:36:35,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:36:35,376 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:36:35,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:36:35,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:36:35,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:36:35,377 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:36:35,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:36:35,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:36:35,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:36:35,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:36:35,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:36:35,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:36:35,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:36:35,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:36:35,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:36:35,655 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:36:35,673 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:36:35,678 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:36:35,680 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:36:35,680 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:36:35,681 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product37.cil.c [2019-10-14 23:36:35,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f86a58a8/6033e9b44af94053a2b4a39b873ccc72/FLAG2826f4ac9 [2019-10-14 23:36:36,301 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:36:36,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product37.cil.c [2019-10-14 23:36:36,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f86a58a8/6033e9b44af94053a2b4a39b873ccc72/FLAG2826f4ac9 [2019-10-14 23:36:36,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f86a58a8/6033e9b44af94053a2b4a39b873ccc72 [2019-10-14 23:36:36,622 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:36:36,623 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:36:36,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:36,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:36:36,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:36:36,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:36" (1/1) ... [2019-10-14 23:36:36,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aa59513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:36, skipping insertion in model container [2019-10-14 23:36:36,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:36" (1/1) ... [2019-10-14 23:36:36,637 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:36:36,694 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:36:37,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:37,180 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:36:37,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:37,341 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:36:37,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:37 WrapperNode [2019-10-14 23:36:37,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:37,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:36:37,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:36:37,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:36:37,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:37" (1/1) ... [2019-10-14 23:36:37,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:37" (1/1) ... [2019-10-14 23:36:37,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:37" (1/1) ... [2019-10-14 23:36:37,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:37" (1/1) ... [2019-10-14 23:36:37,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:37" (1/1) ... [2019-10-14 23:36:37,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:37" (1/1) ... [2019-10-14 23:36:37,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:37" (1/1) ... [2019-10-14 23:36:37,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:36:37,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:36:37,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:36:37,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:36:37,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:37" (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 [2019-10-14 23:36:37,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:36:37,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:36:37,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:37,490 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:36:37,491 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:36:37,491 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:36:37,491 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:36:37,491 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:36:37,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:37,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:37,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:37,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:36:37,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:36:37,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:36:37,493 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:36:37,493 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:36:37,493 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:36:37,493 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:36:37,493 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:36:37,493 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:36:37,494 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:36:37,494 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:36:37,494 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:36:37,494 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:36:37,494 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:36:37,494 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:36:37,495 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:36:37,495 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:36:37,495 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:36:37,495 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:36:37,495 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:36:37,495 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:36:37,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:36:37,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-14 23:36:37,496 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:36:37,496 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:36:37,496 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:36:37,496 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:36:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:36:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:36:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:36:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:36:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:36:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:36:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:36:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:36:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:36:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:36:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:36:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:36:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:36:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:36:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:36:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:36:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:36:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:36:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:36:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:36:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:36:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:36:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:36:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:37,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:36:37,501 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:37,501 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:37,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:36:37,501 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:36:37,501 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:36:37,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:36:37,502 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:36:37,502 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:36:37,502 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:36:37,502 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:36:37,502 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:36:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:36:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:36:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:36:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-14 23:36:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:36:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:36:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:36:37,504 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:36:37,504 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:36:37,504 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:36:37,504 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:36:37,504 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:36:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:36:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:36:37,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:36:38,591 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:36:38,592 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:36:38,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:38 BoogieIcfgContainer [2019-10-14 23:36:38,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:36:38,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:36:38,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:36:38,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:36:38,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:36:36" (1/3) ... [2019-10-14 23:36:38,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f4b7cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:38, skipping insertion in model container [2019-10-14 23:36:38,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:37" (2/3) ... [2019-10-14 23:36:38,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f4b7cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:38, skipping insertion in model container [2019-10-14 23:36:38,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:38" (3/3) ... [2019-10-14 23:36:38,602 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product37.cil.c [2019-10-14 23:36:38,612 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:36:38,622 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:36:38,634 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:36:38,662 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:36:38,662 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:36:38,662 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:36:38,662 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:36:38,663 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:36:38,663 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:36:38,663 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:36:38,663 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:36:38,687 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2019-10-14 23:36:38,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:36:38,698 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:38,699 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:38,701 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:38,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:38,707 INFO L82 PathProgramCache]: Analyzing trace with hash -286818330, now seen corresponding path program 1 times [2019-10-14 23:36:38,717 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:38,717 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815420357] [2019-10-14 23:36:38,717 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:38,718 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:38,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,404 WARN L191 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:36:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:39,480 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815420357] [2019-10-14 23:36:39,481 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:39,482 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:36:39,486 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969996935] [2019-10-14 23:36:39,493 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:36:39,493 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:39,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:36:39,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:36:39,520 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 3 states. [2019-10-14 23:36:40,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:40,757 INFO L93 Difference]: Finished difference Result 299 states and 392 transitions. [2019-10-14 23:36:40,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:36:40,760 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-10-14 23:36:40,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:40,793 INFO L225 Difference]: With dead ends: 299 [2019-10-14 23:36:40,794 INFO L226 Difference]: Without dead ends: 161 [2019-10-14 23:36:40,802 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:36:40,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2019-10-14 23:36:40,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 129. [2019-10-14 23:36:40,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-10-14 23:36:40,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 152 transitions. [2019-10-14 23:36:40,938 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 152 transitions. Word has length 52 [2019-10-14 23:36:40,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:40,939 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 152 transitions. [2019-10-14 23:36:40,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:36:40,939 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 152 transitions. [2019-10-14 23:36:40,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-14 23:36:40,951 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:40,951 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:40,952 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:40,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:40,954 INFO L82 PathProgramCache]: Analyzing trace with hash 2080874190, now seen corresponding path program 1 times [2019-10-14 23:36:40,954 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:40,954 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120187228] [2019-10-14 23:36:40,955 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:40,955 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:40,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:41,377 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:36:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:41,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:41,449 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120187228] [2019-10-14 23:36:41,449 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:41,450 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:36:41,450 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853133280] [2019-10-14 23:36:41,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:36:41,463 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:41,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:36:41,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:36:41,464 INFO L87 Difference]: Start difference. First operand 129 states and 152 transitions. Second operand 4 states. [2019-10-14 23:36:41,918 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:42,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:42,718 INFO L93 Difference]: Finished difference Result 232 states and 283 transitions. [2019-10-14 23:36:42,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:36:42,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-10-14 23:36:42,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:42,722 INFO L225 Difference]: With dead ends: 232 [2019-10-14 23:36:42,722 INFO L226 Difference]: Without dead ends: 145 [2019-10-14 23:36:42,724 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:36:42,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2019-10-14 23:36:42,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 120. [2019-10-14 23:36:42,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-10-14 23:36:42,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2019-10-14 23:36:42,757 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 53 [2019-10-14 23:36:42,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:42,757 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2019-10-14 23:36:42,758 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:36:42,758 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2019-10-14 23:36:42,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:36:42,760 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:42,760 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:42,760 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:42,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:42,760 INFO L82 PathProgramCache]: Analyzing trace with hash -655892717, now seen corresponding path program 1 times [2019-10-14 23:36:42,761 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:42,761 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158371322] [2019-10-14 23:36:42,761 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:42,761 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:42,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,118 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:36:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:43,208 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158371322] [2019-10-14 23:36:43,208 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:43,208 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:36:43,209 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002987276] [2019-10-14 23:36:43,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:36:43,209 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:43,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:36:43,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:36:43,210 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand 8 states. [2019-10-14 23:36:43,734 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:36:44,132 WARN L191 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:44,401 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:36:44,671 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:36:45,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:45,946 INFO L93 Difference]: Finished difference Result 241 states and 297 transitions. [2019-10-14 23:36:45,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:36:45,946 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-10-14 23:36:45,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:45,949 INFO L225 Difference]: With dead ends: 241 [2019-10-14 23:36:45,949 INFO L226 Difference]: Without dead ends: 145 [2019-10-14 23:36:45,950 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:36:45,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2019-10-14 23:36:45,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 120. [2019-10-14 23:36:45,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-10-14 23:36:45,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2019-10-14 23:36:45,984 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 57 [2019-10-14 23:36:45,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:45,985 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2019-10-14 23:36:45,985 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:36:45,985 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2019-10-14 23:36:45,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-14 23:36:45,986 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:45,987 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:45,987 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:45,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:45,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1564257937, now seen corresponding path program 1 times [2019-10-14 23:36:45,988 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:45,988 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940290808] [2019-10-14 23:36:45,988 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:45,988 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:45,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:46,364 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:36:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:46,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:46,469 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940290808] [2019-10-14 23:36:46,470 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:46,470 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:36:46,470 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881164499] [2019-10-14 23:36:46,470 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:36:46,471 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:46,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:36:46,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:36:46,472 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand 6 states. [2019-10-14 23:36:46,930 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:36:48,262 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:49,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:49,006 INFO L93 Difference]: Finished difference Result 345 states and 427 transitions. [2019-10-14 23:36:49,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:36:49,007 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2019-10-14 23:36:49,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:49,010 INFO L225 Difference]: With dead ends: 345 [2019-10-14 23:36:49,010 INFO L226 Difference]: Without dead ends: 249 [2019-10-14 23:36:49,011 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:36:49,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2019-10-14 23:36:49,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 208. [2019-10-14 23:36:49,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2019-10-14 23:36:49,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 238 transitions. [2019-10-14 23:36:49,084 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 238 transitions. Word has length 70 [2019-10-14 23:36:49,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:49,084 INFO L462 AbstractCegarLoop]: Abstraction has 208 states and 238 transitions. [2019-10-14 23:36:49,085 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:36:49,085 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 238 transitions. [2019-10-14 23:36:49,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-14 23:36:49,086 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:49,086 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:49,087 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:49,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:49,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1686316557, now seen corresponding path program 1 times [2019-10-14 23:36:49,087 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:49,087 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215441550] [2019-10-14 23:36:49,088 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:49,088 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:49,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,479 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:36:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:49,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:49,575 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215441550] [2019-10-14 23:36:49,575 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:49,575 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:36:49,575 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737539163] [2019-10-14 23:36:49,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:36:49,577 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:49,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:36:49,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:36:49,578 INFO L87 Difference]: Start difference. First operand 208 states and 238 transitions. Second operand 8 states. [2019-10-14 23:36:50,153 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:36:51,571 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:36:51,913 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:36:52,215 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:36:52,512 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:36:53,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:53,282 INFO L93 Difference]: Finished difference Result 551 states and 690 transitions. [2019-10-14 23:36:53,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:36:53,283 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2019-10-14 23:36:53,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:53,287 INFO L225 Difference]: With dead ends: 551 [2019-10-14 23:36:53,287 INFO L226 Difference]: Without dead ends: 367 [2019-10-14 23:36:53,288 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:36:53,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2019-10-14 23:36:53,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 327. [2019-10-14 23:36:53,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2019-10-14 23:36:53,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 382 transitions. [2019-10-14 23:36:53,371 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 382 transitions. Word has length 84 [2019-10-14 23:36:53,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:53,373 INFO L462 AbstractCegarLoop]: Abstraction has 327 states and 382 transitions. [2019-10-14 23:36:53,373 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:36:53,373 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 382 transitions. [2019-10-14 23:36:53,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-14 23:36:53,377 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:53,378 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:53,378 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:53,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:53,379 INFO L82 PathProgramCache]: Analyzing trace with hash 645528839, now seen corresponding path program 1 times [2019-10-14 23:36:53,380 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:53,381 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486333740] [2019-10-14 23:36:53,381 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:53,381 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:53,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,782 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:36:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:53,931 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486333740] [2019-10-14 23:36:53,932 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:53,933 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:36:53,933 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370204202] [2019-10-14 23:36:53,935 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:36:53,935 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:53,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:36:53,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:36:53,936 INFO L87 Difference]: Start difference. First operand 327 states and 382 transitions. Second operand 10 states. [2019-10-14 23:36:54,602 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:36:56,040 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:36:56,347 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:56,619 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:56,876 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:36:57,248 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:36:58,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:58,457 INFO L93 Difference]: Finished difference Result 748 states and 953 transitions. [2019-10-14 23:36:58,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 23:36:58,458 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2019-10-14 23:36:58,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:58,464 INFO L225 Difference]: With dead ends: 748 [2019-10-14 23:36:58,464 INFO L226 Difference]: Without dead ends: 553 [2019-10-14 23:36:58,465 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:36:58,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2019-10-14 23:36:58,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 485. [2019-10-14 23:36:58,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2019-10-14 23:36:58,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 576 transitions. [2019-10-14 23:36:58,550 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 576 transitions. Word has length 88 [2019-10-14 23:36:58,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:58,551 INFO L462 AbstractCegarLoop]: Abstraction has 485 states and 576 transitions. [2019-10-14 23:36:58,551 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:36:58,551 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 576 transitions. [2019-10-14 23:36:58,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-14 23:36:58,553 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:58,553 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:58,553 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:58,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:58,554 INFO L82 PathProgramCache]: Analyzing trace with hash -277154744, now seen corresponding path program 1 times [2019-10-14 23:36:58,554 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:58,554 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214134063] [2019-10-14 23:36:58,554 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:58,554 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:58,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:58,803 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:36:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:58,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:58,935 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214134063] [2019-10-14 23:36:58,935 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:58,935 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:36:58,936 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741235568] [2019-10-14 23:36:58,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:36:58,936 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:58,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:36:58,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:36:58,937 INFO L87 Difference]: Start difference. First operand 485 states and 576 transitions. Second operand 8 states. [2019-10-14 23:36:59,968 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:00,222 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:00,498 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:01,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:01,541 INFO L93 Difference]: Finished difference Result 898 states and 1109 transitions. [2019-10-14 23:37:01,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:37:01,549 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2019-10-14 23:37:01,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:01,553 INFO L225 Difference]: With dead ends: 898 [2019-10-14 23:37:01,554 INFO L226 Difference]: Without dead ends: 541 [2019-10-14 23:37:01,555 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:37:01,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2019-10-14 23:37:01,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 485. [2019-10-14 23:37:01,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2019-10-14 23:37:01,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 575 transitions. [2019-10-14 23:37:01,632 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 575 transitions. Word has length 88 [2019-10-14 23:37:01,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:01,633 INFO L462 AbstractCegarLoop]: Abstraction has 485 states and 575 transitions. [2019-10-14 23:37:01,633 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:01,633 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 575 transitions. [2019-10-14 23:37:01,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-14 23:37:01,635 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:01,635 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:01,635 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:01,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:01,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1121160246, now seen corresponding path program 1 times [2019-10-14 23:37:01,636 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:01,636 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818610593] [2019-10-14 23:37:01,636 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:01,636 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:01,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,909 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:02,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:02,043 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818610593] [2019-10-14 23:37:02,043 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:02,043 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:37:02,045 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510046932] [2019-10-14 23:37:02,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:37:02,050 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:02,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:37:02,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:37:02,050 INFO L87 Difference]: Start difference. First operand 485 states and 575 transitions. Second operand 12 states. [2019-10-14 23:37:02,828 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:03,120 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:03,373 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:04,116 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:04,400 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:37:04,704 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:04,973 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:06,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:06,220 INFO L93 Difference]: Finished difference Result 997 states and 1235 transitions. [2019-10-14 23:37:06,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-14 23:37:06,220 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2019-10-14 23:37:06,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:06,228 INFO L225 Difference]: With dead ends: 997 [2019-10-14 23:37:06,228 INFO L226 Difference]: Without dead ends: 536 [2019-10-14 23:37:06,230 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:37:06,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2019-10-14 23:37:06,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 485. [2019-10-14 23:37:06,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2019-10-14 23:37:06,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 573 transitions. [2019-10-14 23:37:06,325 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 573 transitions. Word has length 88 [2019-10-14 23:37:06,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:06,325 INFO L462 AbstractCegarLoop]: Abstraction has 485 states and 573 transitions. [2019-10-14 23:37:06,325 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:37:06,325 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 573 transitions. [2019-10-14 23:37:06,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-14 23:37:06,329 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:06,329 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:06,329 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:06,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:06,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1811416500, now seen corresponding path program 1 times [2019-10-14 23:37:06,330 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:06,330 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363739764] [2019-10-14 23:37:06,330 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:06,330 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:06,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,621 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:06,765 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363739764] [2019-10-14 23:37:06,765 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:06,765 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-14 23:37:06,765 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33867821] [2019-10-14 23:37:06,766 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-14 23:37:06,766 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:06,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-14 23:37:06,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:37:06,767 INFO L87 Difference]: Start difference. First operand 485 states and 573 transitions. Second operand 13 states. [2019-10-14 23:37:07,563 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:07,832 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:08,094 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:09,263 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:10,056 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:10,471 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:10,779 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:11,552 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:11,857 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:12,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:12,266 INFO L93 Difference]: Finished difference Result 985 states and 1186 transitions. [2019-10-14 23:37:12,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-14 23:37:12,266 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 89 [2019-10-14 23:37:12,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:12,270 INFO L225 Difference]: With dead ends: 985 [2019-10-14 23:37:12,271 INFO L226 Difference]: Without dead ends: 524 [2019-10-14 23:37:12,273 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2019-10-14 23:37:12,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2019-10-14 23:37:12,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 485. [2019-10-14 23:37:12,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2019-10-14 23:37:12,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 561 transitions. [2019-10-14 23:37:12,361 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 561 transitions. Word has length 89 [2019-10-14 23:37:12,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:12,363 INFO L462 AbstractCegarLoop]: Abstraction has 485 states and 561 transitions. [2019-10-14 23:37:12,363 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-14 23:37:12,363 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 561 transitions. [2019-10-14 23:37:12,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-14 23:37:12,366 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:12,367 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-14 23:37:12,367 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:12,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:12,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1360854695, now seen corresponding path program 1 times [2019-10-14 23:37:12,368 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:12,368 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632985761] [2019-10-14 23:37:12,369 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:12,369 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:12,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,675 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,891 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-14 23:37:12,891 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632985761] [2019-10-14 23:37:12,891 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787498469] [2019-10-14 23:37:12,892 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 [2019-10-14 23:37:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,098 INFO L256 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 22 conjunts are in the unsatisfiable core [2019-10-14 23:37:13,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:37:13,354 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-14 23:37:13,355 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:37:13,355 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2019-10-14 23:37:13,355 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744701572] [2019-10-14 23:37:13,356 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-14 23:37:13,356 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:13,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-14 23:37:13,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2019-10-14 23:37:13,357 INFO L87 Difference]: Start difference. First operand 485 states and 561 transitions. Second operand 19 states. [2019-10-14 23:37:14,182 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:14,973 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188