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_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:37:56,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:37:56,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:37:56,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:37:56,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:37:56,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:37:56,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:37:56,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:37:56,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:37:56,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:37:56,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:37:56,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:37:56,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:37:56,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:37:56,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:37:56,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:37:56,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:37:56,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:37:56,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:37:56,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:37:56,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:37:56,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:37:56,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:37:56,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:37:56,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:37:56,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:37:56,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:37:56,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:37:56,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:37:56,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:37:56,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:37:56,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:37:56,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:37:56,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:37:56,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:37:56,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:37:56,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:37:56,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:37:56,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:37:56,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:37:56,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:37:56,455 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 [2019-10-13 19:37:56,475 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:37:56,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:37:56,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:37:56,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:37:56,479 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:37:56,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:37:56,479 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:37:56,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:37:56,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:37:56,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:37:56,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:37:56,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:37:56,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:37:56,481 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:37:56,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:37:56,482 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:37:56,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:37:56,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:37:56,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:37:56,483 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:37:56,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:37:56,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:37:56,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:37:56,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:37:56,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:37:56,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:37:56,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:37:56,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:37:56,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:37:56,751 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:37:56,764 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:37:56,767 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:37:56,768 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:37:56,769 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:37:56,770 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product50.cil.c [2019-10-13 19:37:56,829 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2532035bf/b5b255b6d18a41afa4628e3b62a9bde9/FLAGe10f2459d [2019-10-13 19:37:57,371 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:37:57,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product50.cil.c [2019-10-13 19:37:57,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2532035bf/b5b255b6d18a41afa4628e3b62a9bde9/FLAGe10f2459d [2019-10-13 19:37:57,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2532035bf/b5b255b6d18a41afa4628e3b62a9bde9 [2019-10-13 19:37:57,682 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:37:57,683 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:37:57,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:37:57,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:37:57,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:37:57,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:37:57" (1/1) ... [2019-10-13 19:37:57,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@453c3fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:57, skipping insertion in model container [2019-10-13 19:37:57,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:37:57" (1/1) ... [2019-10-13 19:37:57,699 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:37:57,758 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:37:58,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:37:58,232 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:37:58,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:37:58,358 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:37:58,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:58 WrapperNode [2019-10-13 19:37:58,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:37:58,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:37:58,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:37:58,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:37:58,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:58" (1/1) ... [2019-10-13 19:37:58,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:58" (1/1) ... [2019-10-13 19:37:58,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:58" (1/1) ... [2019-10-13 19:37:58,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:58" (1/1) ... [2019-10-13 19:37:58,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:58" (1/1) ... [2019-10-13 19:37:58,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:58" (1/1) ... [2019-10-13 19:37:58,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:58" (1/1) ... [2019-10-13 19:37:58,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:37:58,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:37:58,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:37:58,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:37:58,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:58" (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 [2019-10-13 19:37:58,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:37:58,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:37:58,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:37:58,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:37:58,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:37:58,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:37:58,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:37:58,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:37:58,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:37:58,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 19:37:58,519 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:37:58,519 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:37:58,519 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:37:58,520 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:37:58,521 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:37:58,521 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:37:58,524 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:37:58,524 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:37:58,524 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:37:58,524 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:37:58,524 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:37:58,525 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:37:58,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:37:58,525 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:37:58,525 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:37:58,525 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:37:58,525 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:37:58,526 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:37:58,526 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:37:58,526 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:37:58,526 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:37:58,526 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:37:58,526 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:37:58,527 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:37:58,527 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:37:58,527 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:37:58,527 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:37:58,527 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:37:58,527 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:37:58,527 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:37:58,528 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 19:37:58,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:37:58,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:37:58,529 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:37:58,529 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:37:58,529 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:37:58,529 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:37:58,529 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:37:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:37:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:37:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:37:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:37:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:37:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:37:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:37:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:37:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:37:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:37:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:37:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:37:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:37:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:37:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:37:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:37:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:37:58,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 19:37:58,533 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:37:58,533 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:37:58,533 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:37:58,534 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:37:58,534 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:37:58,534 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:37:58,534 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:37:58,534 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:37:58,535 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:37:58,535 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:37:58,536 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:37:58,536 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:37:58,536 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:37:58,536 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:37:58,536 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:37:58,536 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:37:58,537 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:37:58,537 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:37:58,537 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 19:37:58,538 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:37:58,538 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:37:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:37:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:37:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:37:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:37:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:37:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:37:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:37:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:37:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:37:59,764 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:37:59,764 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:37:59,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:59 BoogieIcfgContainer [2019-10-13 19:37:59,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:37:59,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:37:59,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:37:59,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:37:59,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:37:57" (1/3) ... [2019-10-13 19:37:59,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538eb5a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:37:59, skipping insertion in model container [2019-10-13 19:37:59,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:58" (2/3) ... [2019-10-13 19:37:59,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538eb5a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:37:59, skipping insertion in model container [2019-10-13 19:37:59,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:59" (3/3) ... [2019-10-13 19:37:59,780 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product50.cil.c [2019-10-13 19:37:59,790 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:37:59,801 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:37:59,812 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:37:59,853 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:37:59,853 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:37:59,853 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:37:59,853 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:37:59,854 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:37:59,854 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:37:59,854 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:37:59,854 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:37:59,877 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states. [2019-10-13 19:37:59,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 19:37:59,888 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:59,889 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] [2019-10-13 19:37:59,891 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:59,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:59,898 INFO L82 PathProgramCache]: Analyzing trace with hash 291336746, now seen corresponding path program 1 times [2019-10-13 19:37:59,907 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:59,908 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544616086] [2019-10-13 19:37:59,908 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:59,908 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:59,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:00,577 WARN L191 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:00,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:00,677 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544616086] [2019-10-13 19:38:00,678 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:00,679 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:38:00,679 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057204776] [2019-10-13 19:38:00,686 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:38:00,687 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:00,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:38:00,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:38:00,705 INFO L87 Difference]: Start difference. First operand 184 states. Second operand 3 states. [2019-10-13 19:38:01,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:01,853 INFO L93 Difference]: Finished difference Result 318 states and 412 transitions. [2019-10-13 19:38:01,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:38:01,855 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-10-13 19:38:01,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:01,880 INFO L225 Difference]: With dead ends: 318 [2019-10-13 19:38:01,880 INFO L226 Difference]: Without dead ends: 171 [2019-10-13 19:38:01,888 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 [2019-10-13 19:38:01,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2019-10-13 19:38:01,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 138. [2019-10-13 19:38:01,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-10-13 19:38:01,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 161 transitions. [2019-10-13 19:38:01,996 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 161 transitions. Word has length 52 [2019-10-13 19:38:01,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:01,997 INFO L462 AbstractCegarLoop]: Abstraction has 138 states and 161 transitions. [2019-10-13 19:38:01,997 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:38:01,997 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 161 transitions. [2019-10-13 19:38:02,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 19:38:02,009 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:02,010 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] [2019-10-13 19:38:02,010 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:02,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:02,011 INFO L82 PathProgramCache]: Analyzing trace with hash -951540010, now seen corresponding path program 1 times [2019-10-13 19:38:02,011 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:02,012 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198412772] [2019-10-13 19:38:02,012 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:02,012 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:02,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,423 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:02,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198412772] [2019-10-13 19:38:02,460 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:02,460 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:38:02,460 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9488867] [2019-10-13 19:38:02,462 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:38:02,462 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:02,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:38:02,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:38:02,463 INFO L87 Difference]: Start difference. First operand 138 states and 161 transitions. Second operand 4 states. [2019-10-13 19:38:02,942 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:03,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:03,847 INFO L93 Difference]: Finished difference Result 247 states and 299 transitions. [2019-10-13 19:38:03,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:38:03,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-10-13 19:38:03,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:03,852 INFO L225 Difference]: With dead ends: 247 [2019-10-13 19:38:03,852 INFO L226 Difference]: Without dead ends: 155 [2019-10-13 19:38:03,854 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 [2019-10-13 19:38:03,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2019-10-13 19:38:03,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 129. [2019-10-13 19:38:03,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-10-13 19:38:03,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2019-10-13 19:38:03,888 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 53 [2019-10-13 19:38:03,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:03,888 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2019-10-13 19:38:03,889 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:38:03,889 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2019-10-13 19:38:03,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-13 19:38:03,891 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:03,891 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] [2019-10-13 19:38:03,891 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:03,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:03,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1718267444, now seen corresponding path program 1 times [2019-10-13 19:38:03,892 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:03,892 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298335754] [2019-10-13 19:38:03,892 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:03,892 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:03,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:04,262 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:04,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:04,323 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298335754] [2019-10-13 19:38:04,323 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:04,323 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:38:04,323 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551143239] [2019-10-13 19:38:04,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:38:04,324 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:04,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:38:04,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:38:04,325 INFO L87 Difference]: Start difference. First operand 129 states and 149 transitions. Second operand 8 states. [2019-10-13 19:38:04,814 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:05,149 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:05,461 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:05,731 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:07,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:07,085 INFO L93 Difference]: Finished difference Result 260 states and 317 transitions. [2019-10-13 19:38:07,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:38:07,085 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2019-10-13 19:38:07,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:07,088 INFO L225 Difference]: With dead ends: 260 [2019-10-13 19:38:07,088 INFO L226 Difference]: Without dead ends: 155 [2019-10-13 19:38:07,091 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:38:07,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2019-10-13 19:38:07,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 129. [2019-10-13 19:38:07,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-10-13 19:38:07,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 148 transitions. [2019-10-13 19:38:07,126 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 148 transitions. Word has length 58 [2019-10-13 19:38:07,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:07,127 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 148 transitions. [2019-10-13 19:38:07,127 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:07,127 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 148 transitions. [2019-10-13 19:38:07,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-10-13 19:38:07,129 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:07,129 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] [2019-10-13 19:38:07,129 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:07,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:07,130 INFO L82 PathProgramCache]: Analyzing trace with hash -625773272, now seen corresponding path program 1 times [2019-10-13 19:38:07,130 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:07,130 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528310052] [2019-10-13 19:38:07,130 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:07,131 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:07,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:07,431 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:07,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:07,522 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528310052] [2019-10-13 19:38:07,522 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:07,523 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:38:07,523 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387769521] [2019-10-13 19:38:07,524 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:38:07,524 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:07,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:38:07,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:38:07,525 INFO L87 Difference]: Start difference. First operand 129 states and 148 transitions. Second operand 6 states. [2019-10-13 19:38:07,915 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:09,293 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:09,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:09,921 INFO L93 Difference]: Finished difference Result 369 states and 453 transitions. [2019-10-13 19:38:09,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:38:09,922 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2019-10-13 19:38:09,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:09,925 INFO L225 Difference]: With dead ends: 369 [2019-10-13 19:38:09,926 INFO L226 Difference]: Without dead ends: 264 [2019-10-13 19:38:09,927 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 [2019-10-13 19:38:09,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2019-10-13 19:38:09,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 221. [2019-10-13 19:38:09,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2019-10-13 19:38:09,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 251 transitions. [2019-10-13 19:38:09,975 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 251 transitions. Word has length 71 [2019-10-13 19:38:09,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:09,976 INFO L462 AbstractCegarLoop]: Abstraction has 221 states and 251 transitions. [2019-10-13 19:38:09,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:38:09,976 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 251 transitions. [2019-10-13 19:38:09,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-10-13 19:38:09,978 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:09,978 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] [2019-10-13 19:38:09,978 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:09,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:09,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1888633043, now seen corresponding path program 1 times [2019-10-13 19:38:09,979 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:09,979 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332540974] [2019-10-13 19:38:09,979 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:09,979 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:09,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,299 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:10,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:10,421 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332540974] [2019-10-13 19:38:10,421 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:10,421 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:38:10,422 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898516565] [2019-10-13 19:38:10,424 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:38:10,424 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:10,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:38:10,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:38:10,426 INFO L87 Difference]: Start difference. First operand 221 states and 251 transitions. Second operand 8 states. [2019-10-13 19:38:10,943 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:12,389 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:12,716 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:12,988 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:13,280 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:14,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:14,160 INFO L93 Difference]: Finished difference Result 588 states and 730 transitions. [2019-10-13 19:38:14,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 19:38:14,162 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2019-10-13 19:38:14,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:14,170 INFO L225 Difference]: With dead ends: 588 [2019-10-13 19:38:14,170 INFO L226 Difference]: Without dead ends: 391 [2019-10-13 19:38:14,172 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:38:14,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2019-10-13 19:38:14,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 348. [2019-10-13 19:38:14,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2019-10-13 19:38:14,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 403 transitions. [2019-10-13 19:38:14,290 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 403 transitions. Word has length 85 [2019-10-13 19:38:14,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:14,291 INFO L462 AbstractCegarLoop]: Abstraction has 348 states and 403 transitions. [2019-10-13 19:38:14,291 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:14,291 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 403 transitions. [2019-10-13 19:38:14,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-13 19:38:14,293 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:14,293 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] [2019-10-13 19:38:14,293 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:14,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:14,294 INFO L82 PathProgramCache]: Analyzing trace with hash 408582233, now seen corresponding path program 1 times [2019-10-13 19:38:14,294 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:14,294 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313757005] [2019-10-13 19:38:14,295 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:14,295 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:14,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,598 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:14,757 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313757005] [2019-10-13 19:38:14,758 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:14,758 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:38:14,758 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579151056] [2019-10-13 19:38:14,759 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:38:14,759 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:14,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:38:14,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:38:14,759 INFO L87 Difference]: Start difference. First operand 348 states and 403 transitions. Second operand 10 states. [2019-10-13 19:38:15,217 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:16,744 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:17,058 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:17,335 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:17,598 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:18,015 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:19,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:19,290 INFO L93 Difference]: Finished difference Result 799 states and 1008 transitions. [2019-10-13 19:38:19,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:38:19,292 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2019-10-13 19:38:19,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:19,297 INFO L225 Difference]: With dead ends: 799 [2019-10-13 19:38:19,297 INFO L226 Difference]: Without dead ends: 591 [2019-10-13 19:38:19,298 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 [2019-10-13 19:38:19,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2019-10-13 19:38:19,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 519. [2019-10-13 19:38:19,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2019-10-13 19:38:19,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 610 transitions. [2019-10-13 19:38:19,394 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 610 transitions. Word has length 89 [2019-10-13 19:38:19,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:19,394 INFO L462 AbstractCegarLoop]: Abstraction has 519 states and 610 transitions. [2019-10-13 19:38:19,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:38:19,395 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 610 transitions. [2019-10-13 19:38:19,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-13 19:38:19,397 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:19,397 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] [2019-10-13 19:38:19,397 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:19,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:19,398 INFO L82 PathProgramCache]: Analyzing trace with hash -514101350, now seen corresponding path program 1 times [2019-10-13 19:38:19,398 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:19,398 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936760529] [2019-10-13 19:38:19,398 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:19,398 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:19,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,679 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:19,823 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936760529] [2019-10-13 19:38:19,823 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:19,824 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:38:19,824 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324078473] [2019-10-13 19:38:19,825 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:38:19,825 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:19,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:38:19,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:38:19,827 INFO L87 Difference]: Start difference. First operand 519 states and 610 transitions. Second operand 8 states. [2019-10-13 19:38:20,728 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:20,980 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:21,249 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:22,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:22,251 INFO L93 Difference]: Finished difference Result 962 states and 1177 transitions. [2019-10-13 19:38:22,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:38:22,252 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2019-10-13 19:38:22,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:22,259 INFO L225 Difference]: With dead ends: 962 [2019-10-13 19:38:22,259 INFO L226 Difference]: Without dead ends: 579 [2019-10-13 19:38:22,261 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 [2019-10-13 19:38:22,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2019-10-13 19:38:22,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 519. [2019-10-13 19:38:22,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2019-10-13 19:38:22,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 609 transitions. [2019-10-13 19:38:22,349 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 609 transitions. Word has length 89 [2019-10-13 19:38:22,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:22,349 INFO L462 AbstractCegarLoop]: Abstraction has 519 states and 609 transitions. [2019-10-13 19:38:22,349 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:22,349 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 609 transitions. [2019-10-13 19:38:22,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-13 19:38:22,351 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:22,351 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] [2019-10-13 19:38:22,352 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:22,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:22,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1358106852, now seen corresponding path program 1 times [2019-10-13 19:38:22,352 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:22,352 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076088431] [2019-10-13 19:38:22,353 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:22,353 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:22,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:22,618 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:22,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:22,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:22,775 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076088431] [2019-10-13 19:38:22,775 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:22,776 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:38:22,776 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371895276] [2019-10-13 19:38:22,776 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:38:22,777 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:22,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:38:22,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:38:22,777 INFO L87 Difference]: Start difference. First operand 519 states and 609 transitions. Second operand 12 states. [2019-10-13 19:38:23,408 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:23,673 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:23,939 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:24,726 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:25,007 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:38:25,294 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:25,551 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:26,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:26,836 INFO L93 Difference]: Finished difference Result 1063 states and 1302 transitions. [2019-10-13 19:38:26,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 19:38:26,837 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2019-10-13 19:38:26,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:26,841 INFO L225 Difference]: With dead ends: 1063 [2019-10-13 19:38:26,841 INFO L226 Difference]: Without dead ends: 568 [2019-10-13 19:38:26,844 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-10-13 19:38:26,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2019-10-13 19:38:26,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 519. [2019-10-13 19:38:26,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2019-10-13 19:38:26,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 607 transitions. [2019-10-13 19:38:26,960 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 607 transitions. Word has length 89 [2019-10-13 19:38:26,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:26,961 INFO L462 AbstractCegarLoop]: Abstraction has 519 states and 607 transitions. [2019-10-13 19:38:26,961 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:38:26,961 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 607 transitions. [2019-10-13 19:38:26,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-10-13 19:38:26,966 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:26,966 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, 1] [2019-10-13 19:38:26,966 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:26,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:26,966 INFO L82 PathProgramCache]: Analyzing trace with hash -967187523, now seen corresponding path program 1 times [2019-10-13 19:38:26,967 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:26,967 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119698583] [2019-10-13 19:38:26,967 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:26,967 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:26,967 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:27,297 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:27,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:27,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:27,444 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119698583] [2019-10-13 19:38:27,444 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:27,444 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-13 19:38:27,447 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315465963] [2019-10-13 19:38:27,447 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-13 19:38:27,448 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:27,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-13 19:38:27,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:38:27,448 INFO L87 Difference]: Start difference. First operand 519 states and 607 transitions. Second operand 13 states. [2019-10-13 19:38:28,363 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:28,637 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:28,892 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:30,107 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:30,888 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:31,259 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:31,555 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:32,382 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:32,694 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:33,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:33,055 INFO L93 Difference]: Finished difference Result 1056 states and 1260 transitions. [2019-10-13 19:38:33,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-13 19:38:33,055 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 90 [2019-10-13 19:38:33,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:33,060 INFO L225 Difference]: With dead ends: 1056 [2019-10-13 19:38:33,060 INFO L226 Difference]: Without dead ends: 561 [2019-10-13 19:38:33,063 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2019-10-13 19:38:33,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2019-10-13 19:38:33,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 519. [2019-10-13 19:38:33,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2019-10-13 19:38:33,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 595 transitions. [2019-10-13 19:38:33,141 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 595 transitions. Word has length 90 [2019-10-13 19:38:33,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:33,142 INFO L462 AbstractCegarLoop]: Abstraction has 519 states and 595 transitions. [2019-10-13 19:38:33,142 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-13 19:38:33,142 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 595 transitions. [2019-10-13 19:38:33,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-13 19:38:33,145 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:33,145 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:33,145 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:33,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:33,146 INFO L82 PathProgramCache]: Analyzing trace with hash -129105783, now seen corresponding path program 1 times [2019-10-13 19:38:33,146 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:33,146 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923686205] [2019-10-13 19:38:33,146 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:33,147 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:33,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,445 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,636 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 19:38:33,637 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923686205] [2019-10-13 19:38:33,637 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573906684] [2019-10-13 19:38:33,637 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 [2019-10-13 19:38:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:33,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 22 conjunts are in the unsatisfiable core [2019-10-13 19:38:33,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:38:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 19:38:34,255 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:38:34,255 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2019-10-13 19:38:34,255 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972304951] [2019-10-13 19:38:34,256 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-13 19:38:34,257 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:34,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-13 19:38:34,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:38:34,258 INFO L87 Difference]: Start difference. First operand 519 states and 595 transitions. Second operand 19 states. [2019-10-13 19:38:34,990 WARN L191 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:35,932 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188