/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:59:59,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:59:59,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:59:59,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:59:59,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:59:59,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:59:59,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:59:59,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:59:59,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:59:59,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:59:59,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:59:59,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:59:59,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:59:59,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:59:59,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:59:59,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:59:59,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:59:59,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:59:59,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:59:59,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:59:59,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:59:59,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:59:59,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:59:59,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:59:59,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:59:59,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:59:59,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:59:59,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:59:59,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:59:59,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:59:59,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:59:59,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:59:59,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:59:59,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:59:59,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:59:59,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:59:59,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:59:59,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:59:59,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:59:59,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:59:59,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:59:59,442 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 21:59:59,456 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:59:59,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:59:59,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:59:59,458 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:59:59,458 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:59:59,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:59:59,458 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:59:59,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:59:59,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:59:59,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:59:59,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:59:59,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:59:59,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:59:59,460 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:59:59,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:59:59,460 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:59:59,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:59:59,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:59:59,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:59:59,461 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:59:59,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:59:59,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:59:59,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:59:59,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:59:59,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:59:59,463 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:59:59,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:59:59,463 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:59:59,463 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:59:59,783 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:59:59,807 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:59:59,811 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:59:59,813 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:59:59,813 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:59:59,814 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product37.cil.c [2019-11-06 21:59:59,886 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cb829580/461a6be19469431cb3a1fc69232628a2/FLAG2bf22ad5a [2019-11-06 22:00:00,457 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:00:00,458 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product37.cil.c [2019-11-06 22:00:00,477 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cb829580/461a6be19469431cb3a1fc69232628a2/FLAG2bf22ad5a [2019-11-06 22:00:00,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cb829580/461a6be19469431cb3a1fc69232628a2 [2019-11-06 22:00:00,735 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:00:00,737 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:00:00,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:00:00,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:00:00,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:00:00,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:00" (1/1) ... [2019-11-06 22:00:00,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54ffe5f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:00, skipping insertion in model container [2019-11-06 22:00:00,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:00" (1/1) ... [2019-11-06 22:00:00,754 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:00:00,803 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:00:01,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:00:01,276 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:00:01,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:00:01,400 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:00:01,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:01 WrapperNode [2019-11-06 22:00:01,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:00:01,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:00:01,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:00:01,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:00:01,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:01" (1/1) ... [2019-11-06 22:00:01,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:01" (1/1) ... [2019-11-06 22:00:01,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:01" (1/1) ... [2019-11-06 22:00:01,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:01" (1/1) ... [2019-11-06 22:00:01,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:01" (1/1) ... [2019-11-06 22:00:01,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:01" (1/1) ... [2019-11-06 22:00:01,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:01" (1/1) ... [2019-11-06 22:00:01,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:00:01,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:00:01,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:00:01,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:00:01,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:00:01,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:00:01,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:00:01,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 22:00:01,564 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 22:00:01,564 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 22:00:01,564 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 22:00:01,565 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 22:00:01,565 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:00:01,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 22:00:01,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 22:00:01,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 22:00:01,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 22:00:01,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 22:00:01,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 22:00:01,566 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 22:00:01,566 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 22:00:01,566 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:00:01,567 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 22:00:01,567 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 22:00:01,567 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 22:00:01,567 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 22:00:01,567 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 22:00:01,567 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 22:00:01,568 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 22:00:01,568 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 22:00:01,568 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 22:00:01,568 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 22:00:01,568 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 22:00:01,569 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 22:00:01,569 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 22:00:01,569 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 22:00:01,569 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 22:00:01,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 22:00:01,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-11-06 22:00:01,569 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 22:00:01,570 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 22:00:01,570 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 22:00:01,570 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 22:00:01,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:00:01,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:00:01,570 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 22:00:01,571 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 22:00:01,571 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 22:00:01,571 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 22:00:01,571 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 22:00:01,571 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 22:00:01,571 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 22:00:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 22:00:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 22:00:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 22:00:01,572 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 22:00:01,573 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 22:00:01,573 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 22:00:01,573 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:00:01,573 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 22:00:01,573 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 22:00:01,573 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 22:00:01,573 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 22:00:01,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 22:00:01,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 22:00:01,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:00:01,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 22:00:01,574 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 22:00:01,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:00:01,575 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 22:00:01,575 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 22:00:01,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:00:01,575 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 22:00:01,576 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 22:00:01,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:00:01,576 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 22:00:01,576 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 22:00:01,576 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 22:00:01,577 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 22:00:01,578 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 22:00:01,578 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 22:00:01,578 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 22:00:01,578 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 22:00:01,578 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-11-06 22:00:01,578 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 22:00:01,579 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 22:00:01,579 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 22:00:01,580 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:00:01,580 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 22:00:01,580 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 22:00:01,580 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 22:00:01,580 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 22:00:01,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:00:01,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 22:00:01,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:00:02,697 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:00:02,698 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 22:00:02,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:02 BoogieIcfgContainer [2019-11-06 22:00:02,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:00:02,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:00:02,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:00:02,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:00:02,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:00:00" (1/3) ... [2019-11-06 22:00:02,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27151228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:02, skipping insertion in model container [2019-11-06 22:00:02,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:01" (2/3) ... [2019-11-06 22:00:02,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27151228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:02, skipping insertion in model container [2019-11-06 22:00:02,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:02" (3/3) ... [2019-11-06 22:00:02,711 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product37.cil.c [2019-11-06 22:00:02,721 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:00:02,730 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:00:02,741 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:00:02,779 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:00:02,779 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:00:02,779 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:00:02,779 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:00:02,780 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:00:02,780 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:00:02,780 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:00:02,780 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:00:02,809 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2019-11-06 22:00:02,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-06 22:00:02,820 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:02,821 INFO L410 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] [2019-11-06 22:00:02,823 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:02,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:02,827 INFO L82 PathProgramCache]: Analyzing trace with hash -286818330, now seen corresponding path program 1 times [2019-11-06 22:00:02,834 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:02,835 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785560846] [2019-11-06 22:00:02,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:03,495 WARN L191 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:03,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:03,603 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785560846] [2019-11-06 22:00:03,604 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:03,605 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:00:03,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549833672] [2019-11-06 22:00:03,611 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:00:03,612 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:03,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:00:03,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:00:03,630 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 3 states. [2019-11-06 22:00:04,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:04,906 INFO L93 Difference]: Finished difference Result 299 states and 392 transitions. [2019-11-06 22:00:04,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:00:04,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-11-06 22:00:04,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:04,923 INFO L225 Difference]: With dead ends: 299 [2019-11-06 22:00:04,923 INFO L226 Difference]: Without dead ends: 161 [2019-11-06 22:00:04,928 INFO L630 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 [2019-11-06 22:00:04,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2019-11-06 22:00:05,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 129. [2019-11-06 22:00:05,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-11-06 22:00:05,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 152 transitions. [2019-11-06 22:00:05,010 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 152 transitions. Word has length 52 [2019-11-06 22:00:05,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:05,011 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 152 transitions. [2019-11-06 22:00:05,011 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:00:05,011 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 152 transitions. [2019-11-06 22:00:05,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-06 22:00:05,015 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:05,015 INFO L410 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] [2019-11-06 22:00:05,015 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:05,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:05,015 INFO L82 PathProgramCache]: Analyzing trace with hash 2080874190, now seen corresponding path program 1 times [2019-11-06 22:00:05,016 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:05,016 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462189975] [2019-11-06 22:00:05,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:05,356 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:05,426 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462189975] [2019-11-06 22:00:05,426 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:05,426 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:00:05,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303842305] [2019-11-06 22:00:05,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:00:05,441 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:05,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:00:05,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:00:05,446 INFO L87 Difference]: Start difference. First operand 129 states and 152 transitions. Second operand 4 states. [2019-11-06 22:00:05,963 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:06,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:06,776 INFO L93 Difference]: Finished difference Result 232 states and 283 transitions. [2019-11-06 22:00:06,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:00:06,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-11-06 22:00:06,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:06,781 INFO L225 Difference]: With dead ends: 232 [2019-11-06 22:00:06,781 INFO L226 Difference]: Without dead ends: 145 [2019-11-06 22:00:06,783 INFO L630 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 [2019-11-06 22:00:06,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2019-11-06 22:00:06,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 120. [2019-11-06 22:00:06,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-11-06 22:00:06,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2019-11-06 22:00:06,818 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 53 [2019-11-06 22:00:06,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:06,818 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2019-11-06 22:00:06,818 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:00:06,818 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2019-11-06 22:00:06,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-06 22:00:06,821 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:06,821 INFO L410 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] [2019-11-06 22:00:06,821 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:06,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:06,821 INFO L82 PathProgramCache]: Analyzing trace with hash -655892717, now seen corresponding path program 1 times [2019-11-06 22:00:06,822 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:06,822 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723768507] [2019-11-06 22:00:06,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,160 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:07,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:07,317 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723768507] [2019-11-06 22:00:07,317 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:07,317 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:00:07,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937383607] [2019-11-06 22:00:07,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:00:07,320 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:07,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:00:07,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:00:07,321 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand 8 states. [2019-11-06 22:00:07,914 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:08,269 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:08,577 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:08,853 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:10,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:10,177 INFO L93 Difference]: Finished difference Result 241 states and 297 transitions. [2019-11-06 22:00:10,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 22:00:10,178 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-11-06 22:00:10,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:10,181 INFO L225 Difference]: With dead ends: 241 [2019-11-06 22:00:10,181 INFO L226 Difference]: Without dead ends: 145 [2019-11-06 22:00:10,182 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:00:10,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2019-11-06 22:00:10,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 120. [2019-11-06 22:00:10,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-11-06 22:00:10,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2019-11-06 22:00:10,215 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 57 [2019-11-06 22:00:10,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:10,216 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2019-11-06 22:00:10,216 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:00:10,216 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2019-11-06 22:00:10,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-11-06 22:00:10,219 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:10,219 INFO L410 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] [2019-11-06 22:00:10,219 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:10,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:10,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1564257937, now seen corresponding path program 1 times [2019-11-06 22:00:10,220 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:10,220 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688383102] [2019-11-06 22:00:10,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:10,522 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:10,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:10,610 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688383102] [2019-11-06 22:00:10,610 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:10,610 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:00:10,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104997093] [2019-11-06 22:00:10,611 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:00:10,611 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:10,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:00:10,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:00:10,612 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand 6 states. [2019-11-06 22:00:11,046 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:12,336 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:13,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:13,058 INFO L93 Difference]: Finished difference Result 345 states and 427 transitions. [2019-11-06 22:00:13,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 22:00:13,059 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2019-11-06 22:00:13,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:13,063 INFO L225 Difference]: With dead ends: 345 [2019-11-06 22:00:13,063 INFO L226 Difference]: Without dead ends: 249 [2019-11-06 22:00:13,064 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:00:13,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2019-11-06 22:00:13,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 208. [2019-11-06 22:00:13,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2019-11-06 22:00:13,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 238 transitions. [2019-11-06 22:00:13,116 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 238 transitions. Word has length 70 [2019-11-06 22:00:13,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:13,116 INFO L462 AbstractCegarLoop]: Abstraction has 208 states and 238 transitions. [2019-11-06 22:00:13,116 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:00:13,116 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 238 transitions. [2019-11-06 22:00:13,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-11-06 22:00:13,118 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:13,118 INFO L410 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] [2019-11-06 22:00:13,119 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:13,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:13,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1686316557, now seen corresponding path program 1 times [2019-11-06 22:00:13,119 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:13,119 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852508397] [2019-11-06 22:00:13,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,446 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:13,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:13,567 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852508397] [2019-11-06 22:00:13,567 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:13,567 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:00:13,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135619972] [2019-11-06 22:00:13,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:00:13,568 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:13,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:00:13,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:00:13,569 INFO L87 Difference]: Start difference. First operand 208 states and 238 transitions. Second operand 8 states. [2019-11-06 22:00:14,066 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:15,472 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:15,820 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:16,104 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:16,353 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:17,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:17,136 INFO L93 Difference]: Finished difference Result 551 states and 690 transitions. [2019-11-06 22:00:17,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-06 22:00:17,136 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2019-11-06 22:00:17,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:17,141 INFO L225 Difference]: With dead ends: 551 [2019-11-06 22:00:17,141 INFO L226 Difference]: Without dead ends: 367 [2019-11-06 22:00:17,142 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-11-06 22:00:17,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2019-11-06 22:00:17,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 327. [2019-11-06 22:00:17,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2019-11-06 22:00:17,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 382 transitions. [2019-11-06 22:00:17,216 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 382 transitions. Word has length 84 [2019-11-06 22:00:17,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:17,216 INFO L462 AbstractCegarLoop]: Abstraction has 327 states and 382 transitions. [2019-11-06 22:00:17,217 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:00:17,217 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 382 transitions. [2019-11-06 22:00:17,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-06 22:00:17,218 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:17,219 INFO L410 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] [2019-11-06 22:00:17,219 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:17,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:17,219 INFO L82 PathProgramCache]: Analyzing trace with hash 645528839, now seen corresponding path program 1 times [2019-11-06 22:00:17,219 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:17,220 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700353311] [2019-11-06 22:00:17,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,547 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:17,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:17,638 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700353311] [2019-11-06 22:00:17,638 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:17,638 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 22:00:17,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614740312] [2019-11-06 22:00:17,639 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:00:17,639 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:17,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 22:00:17,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:00:17,640 INFO L87 Difference]: Start difference. First operand 327 states and 382 transitions. Second operand 10 states. [2019-11-06 22:00:18,220 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:19,657 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:19,959 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:20,229 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:20,476 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:20,847 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:22,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:22,087 INFO L93 Difference]: Finished difference Result 748 states and 953 transitions. [2019-11-06 22:00:22,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-06 22:00:22,088 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2019-11-06 22:00:22,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:22,094 INFO L225 Difference]: With dead ends: 748 [2019-11-06 22:00:22,094 INFO L226 Difference]: Without dead ends: 553 [2019-11-06 22:00:22,095 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-11-06 22:00:22,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2019-11-06 22:00:22,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 485. [2019-11-06 22:00:22,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2019-11-06 22:00:22,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 576 transitions. [2019-11-06 22:00:22,199 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 576 transitions. Word has length 88 [2019-11-06 22:00:22,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:22,201 INFO L462 AbstractCegarLoop]: Abstraction has 485 states and 576 transitions. [2019-11-06 22:00:22,201 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 22:00:22,201 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 576 transitions. [2019-11-06 22:00:22,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-06 22:00:22,205 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:22,205 INFO L410 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] [2019-11-06 22:00:22,205 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:22,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:22,206 INFO L82 PathProgramCache]: Analyzing trace with hash -277154744, now seen corresponding path program 1 times [2019-11-06 22:00:22,206 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:22,206 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627327086] [2019-11-06 22:00:22,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:22,450 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:22,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:22,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:22,580 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627327086] [2019-11-06 22:00:22,580 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:22,580 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:00:22,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039755199] [2019-11-06 22:00:22,581 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:00:22,581 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:22,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:00:22,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:00:22,582 INFO L87 Difference]: Start difference. First operand 485 states and 576 transitions. Second operand 8 states. [2019-11-06 22:00:23,647 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:23,891 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:24,156 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:25,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:25,193 INFO L93 Difference]: Finished difference Result 898 states and 1109 transitions. [2019-11-06 22:00:25,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 22:00:25,201 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2019-11-06 22:00:25,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:25,205 INFO L225 Difference]: With dead ends: 898 [2019-11-06 22:00:25,205 INFO L226 Difference]: Without dead ends: 541 [2019-11-06 22:00:25,206 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:00:25,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2019-11-06 22:00:25,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 485. [2019-11-06 22:00:25,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2019-11-06 22:00:25,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 575 transitions. [2019-11-06 22:00:25,289 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 575 transitions. Word has length 88 [2019-11-06 22:00:25,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:25,290 INFO L462 AbstractCegarLoop]: Abstraction has 485 states and 575 transitions. [2019-11-06 22:00:25,290 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:00:25,290 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 575 transitions. [2019-11-06 22:00:25,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-06 22:00:25,292 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:25,292 INFO L410 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] [2019-11-06 22:00:25,293 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:25,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:25,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1121160246, now seen corresponding path program 1 times [2019-11-06 22:00:25,293 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:25,294 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781585147] [2019-11-06 22:00:25,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,578 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:25,715 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781585147] [2019-11-06 22:00:25,715 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:25,716 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 22:00:25,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388538481] [2019-11-06 22:00:25,717 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 22:00:25,721 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:25,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 22:00:25,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:00:25,722 INFO L87 Difference]: Start difference. First operand 485 states and 575 transitions. Second operand 12 states. [2019-11-06 22:00:26,575 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:26,830 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:27,083 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:27,849 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:28,107 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:00:28,399 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:28,663 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:29,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:29,914 INFO L93 Difference]: Finished difference Result 997 states and 1235 transitions. [2019-11-06 22:00:29,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-06 22:00:29,914 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2019-11-06 22:00:29,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:29,919 INFO L225 Difference]: With dead ends: 997 [2019-11-06 22:00:29,919 INFO L226 Difference]: Without dead ends: 536 [2019-11-06 22:00:29,921 INFO L630 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 [2019-11-06 22:00:29,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2019-11-06 22:00:30,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 485. [2019-11-06 22:00:30,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2019-11-06 22:00:30,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 573 transitions. [2019-11-06 22:00:30,018 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 573 transitions. Word has length 88 [2019-11-06 22:00:30,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:30,019 INFO L462 AbstractCegarLoop]: Abstraction has 485 states and 573 transitions. [2019-11-06 22:00:30,019 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 22:00:30,019 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 573 transitions. [2019-11-06 22:00:30,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-06 22:00:30,020 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:30,021 INFO L410 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] [2019-11-06 22:00:30,021 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:30,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:30,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1811416500, now seen corresponding path program 1 times [2019-11-06 22:00:30,022 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:30,022 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753897539] [2019-11-06 22:00:30,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,326 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:30,491 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753897539] [2019-11-06 22:00:30,491 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:30,491 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-11-06 22:00:30,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011464057] [2019-11-06 22:00:30,492 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-06 22:00:30,492 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:30,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-06 22:00:30,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-11-06 22:00:30,493 INFO L87 Difference]: Start difference. First operand 485 states and 573 transitions. Second operand 13 states. [2019-11-06 22:00:31,309 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:31,576 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:31,821 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:32,871 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:33,663 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:34,036 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:34,331 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:35,095 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:35,383 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:35,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:35,729 INFO L93 Difference]: Finished difference Result 985 states and 1186 transitions. [2019-11-06 22:00:35,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-06 22:00:35,730 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 89 [2019-11-06 22:00:35,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:35,733 INFO L225 Difference]: With dead ends: 985 [2019-11-06 22:00:35,733 INFO L226 Difference]: Without dead ends: 524 [2019-11-06 22:00:35,735 INFO L630 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 [2019-11-06 22:00:35,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2019-11-06 22:00:35,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 485. [2019-11-06 22:00:35,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2019-11-06 22:00:35,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 561 transitions. [2019-11-06 22:00:35,796 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 561 transitions. Word has length 89 [2019-11-06 22:00:35,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:35,796 INFO L462 AbstractCegarLoop]: Abstraction has 485 states and 561 transitions. [2019-11-06 22:00:35,797 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-06 22:00:35,797 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 561 transitions. [2019-11-06 22:00:35,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-11-06 22:00:35,799 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:35,800 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:35,800 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:35,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:35,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1360854695, now seen corresponding path program 1 times [2019-11-06 22:00:35,801 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:35,801 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337983642] [2019-11-06 22:00:35,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:36,067 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:36,258 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-06 22:00:36,258 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337983642] [2019-11-06 22:00:36,259 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588522088] [2019-11-06 22:00:36,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:00:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:36,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-06 22:00:36,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:00:36,756 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-06 22:00:36,757 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:00:36,757 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2019-11-06 22:00:36,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419079654] [2019-11-06 22:00:36,759 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-06 22:00:36,759 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:36,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-06 22:00:36,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2019-11-06 22:00:36,760 INFO L87 Difference]: Start difference. First operand 485 states and 561 transitions. Second operand 19 states. [2019-11-06 22:00:37,604 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:38,440 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:38,768 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:00:39,153 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189