java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:42:08,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:42:08,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:42:08,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:42:08,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:42:08,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:42:08,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:42:08,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:42:08,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:42:08,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:42:08,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:42:08,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:42:08,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:42:08,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:42:08,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:42:08,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:42:08,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:42:08,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:42:08,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:42:08,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:42:08,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:42:08,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:42:08,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:42:08,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:42:08,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:42:08,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:42:08,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:42:08,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:42:08,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:42:08,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:42:08,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:42:08,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:42:08,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:42:08,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:42:08,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:42:08,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:42:08,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:42:08,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:42:08,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:42:08,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:42:08,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:42:08,655 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 19:42:08,674 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:42:08,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:42:08,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:42:08,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:42:08,679 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:42:08,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:42:08,679 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:42:08,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:42:08,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:42:08,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:42:08,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:42:08,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:42:08,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:42:08,682 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:42:08,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:42:08,682 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:42:08,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:42:08,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:42:08,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:42:08,683 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:42:08,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:42:08,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:42:08,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:42:08,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:42:08,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:42:08,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:42:08,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:42:08,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:42:08,685 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:42:08,971 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:42:08,991 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:42:08,995 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:42:08,996 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:42:08,997 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:42:08,998 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2019-10-13 19:42:09,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/977ed8db4/e869e71360a5448e8bc8248b0b26cb4b/FLAG91b741fc1 [2019-10-13 19:42:09,547 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:42:09,548 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2019-10-13 19:42:09,561 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/977ed8db4/e869e71360a5448e8bc8248b0b26cb4b/FLAG91b741fc1 [2019-10-13 19:42:09,810 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/977ed8db4/e869e71360a5448e8bc8248b0b26cb4b [2019-10-13 19:42:09,820 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:42:09,822 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:42:09,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:42:09,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:42:09,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:42:09,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:42:09" (1/1) ... [2019-10-13 19:42:09,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191b1495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:09, skipping insertion in model container [2019-10-13 19:42:09,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:42:09" (1/1) ... [2019-10-13 19:42:09,837 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:42:09,886 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:42:10,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:42:10,324 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:42:10,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:42:10,448 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:42:10,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:10 WrapperNode [2019-10-13 19:42:10,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:42:10,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:42:10,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:42:10,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:42:10,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:10" (1/1) ... [2019-10-13 19:42:10,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:10" (1/1) ... [2019-10-13 19:42:10,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:10" (1/1) ... [2019-10-13 19:42:10,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:10" (1/1) ... [2019-10-13 19:42:10,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:10" (1/1) ... [2019-10-13 19:42:10,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:10" (1/1) ... [2019-10-13 19:42:10,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:10" (1/1) ... [2019-10-13 19:42:10,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:42:10,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:42:10,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:42:10,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:42:10,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:10" (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 19:42:10,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:42:10,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:42:10,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:42:10,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:42:10,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:42:10,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:42:10,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:42:10,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:42:10,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:42:10,581 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:42:10,581 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:42:10,581 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:42:10,581 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:42:10,581 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:42:10,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:42:10,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-13 19:42:10,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-13 19:42:10,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-13 19:42:10,582 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:42:10,583 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:42:10,583 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:42:10,583 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:42:10,583 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:42:10,583 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:42:10,583 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:42:10,583 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:42:10,584 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:42:10,584 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:42:10,584 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:42:10,584 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:42:10,584 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:42:10,584 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:42:10,585 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:42:10,585 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:42:10,585 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:42:10,585 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:42:10,585 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:42:10,585 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:42:10,586 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 19:42:10,586 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 19:42:10,586 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:42:10,586 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:42:10,586 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:42:10,586 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:42:10,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:42:10,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:42:10,587 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:42:10,587 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:42:10,587 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:42:10,587 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:42:10,588 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:42:10,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:42:10,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:42:10,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:42:10,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:42:10,588 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:42:10,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:42:10,589 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:42:10,589 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:42:10,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:42:10,589 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:42:10,589 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:42:10,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:42:10,590 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:42:10,590 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:42:10,590 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:42:10,590 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:42:10,590 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:42:10,590 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:42:10,591 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:42:10,591 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:42:10,591 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-13 19:42:10,591 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:42:10,591 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:42:10,591 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:42:10,592 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:42:10,592 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:42:10,592 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:42:10,592 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:42:10,592 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:42:10,592 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:42:10,593 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-13 19:42:10,593 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-13 19:42:10,593 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:42:10,593 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:42:10,593 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:42:10,593 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:42:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:42:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 19:42:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 19:42:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:42:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:42:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:42:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:42:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:42:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:42:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:42:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:42:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:42:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:42:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:42:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:42:11,643 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:42:11,643 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:42:11,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:42:11 BoogieIcfgContainer [2019-10-13 19:42:11,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:42:11,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:42:11,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:42:11,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:42:11,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:42:09" (1/3) ... [2019-10-13 19:42:11,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d9469a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:42:11, skipping insertion in model container [2019-10-13 19:42:11,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:42:10" (2/3) ... [2019-10-13 19:42:11,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d9469a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:42:11, skipping insertion in model container [2019-10-13 19:42:11,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:42:11" (3/3) ... [2019-10-13 19:42:11,656 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product52.cil.c [2019-10-13 19:42:11,665 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:42:11,676 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:42:11,687 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:42:11,724 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:42:11,724 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:42:11,725 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:42:11,725 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:42:11,725 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:42:11,725 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:42:11,725 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:42:11,725 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:42:11,746 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2019-10-13 19:42:11,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-13 19:42:11,755 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:11,756 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:42:11,757 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:11,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:11,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1089631799, now seen corresponding path program 1 times [2019-10-13 19:42:11,773 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:11,773 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910299355] [2019-10-13 19:42:11,774 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:11,774 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:11,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:12,430 WARN L191 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:12,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:42:12,556 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910299355] [2019-10-13 19:42:12,558 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:12,558 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:42:12,558 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924103664] [2019-10-13 19:42:12,564 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:42:12,565 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:12,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:42:12,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:42:12,581 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 4 states. [2019-10-13 19:42:13,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:13,751 INFO L93 Difference]: Finished difference Result 328 states and 422 transitions. [2019-10-13 19:42:13,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:42:13,753 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2019-10-13 19:42:13,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:13,771 INFO L225 Difference]: With dead ends: 328 [2019-10-13 19:42:13,772 INFO L226 Difference]: Without dead ends: 181 [2019-10-13 19:42:13,777 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:42:13,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2019-10-13 19:42:13,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 148. [2019-10-13 19:42:13,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-10-13 19:42:13,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 174 transitions. [2019-10-13 19:42:13,890 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 174 transitions. Word has length 59 [2019-10-13 19:42:13,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:13,891 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 174 transitions. [2019-10-13 19:42:13,891 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:42:13,891 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 174 transitions. [2019-10-13 19:42:13,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-13 19:42:13,895 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:13,895 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:42:13,896 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:13,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:13,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1975382983, now seen corresponding path program 1 times [2019-10-13 19:42:13,896 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:13,897 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085687903] [2019-10-13 19:42:13,897 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:13,897 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:13,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:14,259 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:14,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:42:14,310 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085687903] [2019-10-13 19:42:14,310 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:14,310 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:42:14,310 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733430576] [2019-10-13 19:42:14,312 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:42:14,313 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:14,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:42:14,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:42:14,313 INFO L87 Difference]: Start difference. First operand 148 states and 174 transitions. Second operand 5 states. [2019-10-13 19:42:14,771 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:15,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:15,594 INFO L93 Difference]: Finished difference Result 263 states and 322 transitions. [2019-10-13 19:42:15,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:42:15,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2019-10-13 19:42:15,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:15,599 INFO L225 Difference]: With dead ends: 263 [2019-10-13 19:42:15,599 INFO L226 Difference]: Without dead ends: 171 [2019-10-13 19:42:15,601 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:42:15,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2019-10-13 19:42:15,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 139. [2019-10-13 19:42:15,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-10-13 19:42:15,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 162 transitions. [2019-10-13 19:42:15,639 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 162 transitions. Word has length 60 [2019-10-13 19:42:15,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:15,640 INFO L462 AbstractCegarLoop]: Abstraction has 139 states and 162 transitions. [2019-10-13 19:42:15,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:42:15,640 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 162 transitions. [2019-10-13 19:42:15,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-10-13 19:42:15,643 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:15,643 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:42:15,644 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:15,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:15,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1007889166, now seen corresponding path program 1 times [2019-10-13 19:42:15,645 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:15,645 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904318977] [2019-10-13 19:42:15,645 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:15,645 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:15,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:16,023 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:16,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:42:16,169 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904318977] [2019-10-13 19:42:16,169 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:16,170 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:42:16,170 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371558509] [2019-10-13 19:42:16,171 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:42:16,171 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:16,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:42:16,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:42:16,172 INFO L87 Difference]: Start difference. First operand 139 states and 162 transitions. Second operand 9 states. [2019-10-13 19:42:16,570 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:16,933 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-13 19:42:17,248 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:17,525 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:18,467 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:20,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:20,393 INFO L93 Difference]: Finished difference Result 466 states and 577 transitions. [2019-10-13 19:42:20,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 19:42:20,397 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2019-10-13 19:42:20,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:20,401 INFO L225 Difference]: With dead ends: 466 [2019-10-13 19:42:20,401 INFO L226 Difference]: Without dead ends: 355 [2019-10-13 19:42:20,403 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:42:20,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2019-10-13 19:42:20,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 294. [2019-10-13 19:42:20,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-10-13 19:42:20,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 356 transitions. [2019-10-13 19:42:20,476 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 356 transitions. Word has length 65 [2019-10-13 19:42:20,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:20,476 INFO L462 AbstractCegarLoop]: Abstraction has 294 states and 356 transitions. [2019-10-13 19:42:20,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:42:20,476 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 356 transitions. [2019-10-13 19:42:20,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-13 19:42:20,480 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:20,480 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:42:20,480 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:20,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:20,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1025318737, now seen corresponding path program 1 times [2019-10-13 19:42:20,481 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:20,481 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448152220] [2019-10-13 19:42:20,482 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:20,482 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:20,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:20,797 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:20,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:42:20,883 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448152220] [2019-10-13 19:42:20,884 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:20,884 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:42:20,884 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977507522] [2019-10-13 19:42:20,885 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:42:20,885 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:20,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:42:20,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:42:20,886 INFO L87 Difference]: Start difference. First operand 294 states and 356 transitions. Second operand 9 states. [2019-10-13 19:42:21,376 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:22,121 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:22,961 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:23,299 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:23,578 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:23,874 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:24,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:24,724 INFO L93 Difference]: Finished difference Result 755 states and 986 transitions. [2019-10-13 19:42:24,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:42:24,725 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2019-10-13 19:42:24,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:24,730 INFO L225 Difference]: With dead ends: 755 [2019-10-13 19:42:24,730 INFO L226 Difference]: Without dead ends: 489 [2019-10-13 19:42:24,734 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:42:24,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2019-10-13 19:42:24,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 421. [2019-10-13 19:42:24,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2019-10-13 19:42:24,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 507 transitions. [2019-10-13 19:42:24,827 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 507 transitions. Word has length 70 [2019-10-13 19:42:24,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:24,827 INFO L462 AbstractCegarLoop]: Abstraction has 421 states and 507 transitions. [2019-10-13 19:42:24,827 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:42:24,828 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 507 transitions. [2019-10-13 19:42:24,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-13 19:42:24,830 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:24,830 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:42:24,830 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:24,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:24,831 INFO L82 PathProgramCache]: Analyzing trace with hash -2085443903, now seen corresponding path program 1 times [2019-10-13 19:42:24,831 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:24,831 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674118209] [2019-10-13 19:42:24,831 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:24,831 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:24,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:24,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:25,166 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:25,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:42:25,329 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674118209] [2019-10-13 19:42:25,329 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:25,329 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:42:25,330 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875480981] [2019-10-13 19:42:25,331 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:42:25,331 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:25,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:42:25,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:42:25,332 INFO L87 Difference]: Start difference. First operand 421 states and 507 transitions. Second operand 9 states. [2019-10-13 19:42:26,507 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:26,774 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-13 19:42:27,070 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:27,330 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:28,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:28,121 INFO L93 Difference]: Finished difference Result 903 states and 1149 transitions. [2019-10-13 19:42:28,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:42:28,122 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2019-10-13 19:42:28,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:28,127 INFO L225 Difference]: With dead ends: 903 [2019-10-13 19:42:28,127 INFO L226 Difference]: Without dead ends: 510 [2019-10-13 19:42:28,128 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:42:28,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2019-10-13 19:42:28,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 434. [2019-10-13 19:42:28,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2019-10-13 19:42:28,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 521 transitions. [2019-10-13 19:42:28,208 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 521 transitions. Word has length 93 [2019-10-13 19:42:28,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:28,209 INFO L462 AbstractCegarLoop]: Abstraction has 434 states and 521 transitions. [2019-10-13 19:42:28,209 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:42:28,209 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 521 transitions. [2019-10-13 19:42:28,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-13 19:42:28,211 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:28,211 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:42:28,212 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:28,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:28,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1383844029, now seen corresponding path program 1 times [2019-10-13 19:42:28,212 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:28,212 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781103084] [2019-10-13 19:42:28,213 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:28,213 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:28,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,548 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:28,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:42:28,702 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781103084] [2019-10-13 19:42:28,702 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:28,702 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 19:42:28,702 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084514140] [2019-10-13 19:42:28,703 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:42:28,703 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:28,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:42:28,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:42:28,704 INFO L87 Difference]: Start difference. First operand 434 states and 521 transitions. Second operand 11 states. [2019-10-13 19:42:29,383 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:29,645 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:29,899 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:30,843 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:31,162 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:31,434 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:32,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:32,387 INFO L93 Difference]: Finished difference Result 930 states and 1198 transitions. [2019-10-13 19:42:32,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:42:32,388 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2019-10-13 19:42:32,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:32,392 INFO L225 Difference]: With dead ends: 930 [2019-10-13 19:42:32,393 INFO L226 Difference]: Without dead ends: 524 [2019-10-13 19:42:32,394 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:42:32,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2019-10-13 19:42:32,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 442. [2019-10-13 19:42:32,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2019-10-13 19:42:32,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 529 transitions. [2019-10-13 19:42:32,507 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 529 transitions. Word has length 93 [2019-10-13 19:42:32,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:32,509 INFO L462 AbstractCegarLoop]: Abstraction has 442 states and 529 transitions. [2019-10-13 19:42:32,509 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 19:42:32,509 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 529 transitions. [2019-10-13 19:42:32,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-13 19:42:32,511 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:32,511 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:42:32,512 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:32,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:32,512 INFO L82 PathProgramCache]: Analyzing trace with hash 341636868, now seen corresponding path program 1 times [2019-10-13 19:42:32,512 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:32,512 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599729486] [2019-10-13 19:42:32,513 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:32,513 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:32,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:32,811 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:32,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:42:32,934 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599729486] [2019-10-13 19:42:32,934 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:32,935 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:42:32,935 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279722100] [2019-10-13 19:42:32,935 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:42:32,935 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:32,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:42:32,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:42:32,936 INFO L87 Difference]: Start difference. First operand 442 states and 529 transitions. Second operand 7 states. [2019-10-13 19:42:33,339 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:33,850 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:35,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:35,852 INFO L93 Difference]: Finished difference Result 1411 states and 1828 transitions. [2019-10-13 19:42:35,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:42:35,853 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2019-10-13 19:42:35,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:35,866 INFO L225 Difference]: With dead ends: 1411 [2019-10-13 19:42:35,867 INFO L226 Difference]: Without dead ends: 997 [2019-10-13 19:42:35,870 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:42:35,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2019-10-13 19:42:36,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 919. [2019-10-13 19:42:36,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2019-10-13 19:42:36,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1115 transitions. [2019-10-13 19:42:36,126 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1115 transitions. Word has length 93 [2019-10-13 19:42:36,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:36,127 INFO L462 AbstractCegarLoop]: Abstraction has 919 states and 1115 transitions. [2019-10-13 19:42:36,127 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:42:36,127 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1115 transitions. [2019-10-13 19:42:36,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-13 19:42:36,132 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:36,132 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:42:36,132 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:36,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:36,133 INFO L82 PathProgramCache]: Analyzing trace with hash -643321942, now seen corresponding path program 1 times [2019-10-13 19:42:36,134 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:36,135 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056735480] [2019-10-13 19:42:36,136 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:36,136 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:36,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:36,575 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:36,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:36,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:42:36,715 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056735480] [2019-10-13 19:42:36,715 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:42:36,715 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:42:36,715 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878034831] [2019-10-13 19:42:36,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:42:36,716 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:36,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:42:36,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:42:36,717 INFO L87 Difference]: Start difference. First operand 919 states and 1115 transitions. Second operand 12 states. [2019-10-13 19:42:37,384 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:38,065 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:38,822 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:39,155 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:39,417 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-10-13 19:42:39,715 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:40,016 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:42:42,300 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:42:42,612 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:42:43,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:42:43,202 INFO L93 Difference]: Finished difference Result 2611 states and 3380 transitions. [2019-10-13 19:42:43,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-10-13 19:42:43,203 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2019-10-13 19:42:43,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:42:43,213 INFO L225 Difference]: With dead ends: 2611 [2019-10-13 19:42:43,214 INFO L226 Difference]: Without dead ends: 1912 [2019-10-13 19:42:43,217 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 19:42:43,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2019-10-13 19:42:43,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1606. [2019-10-13 19:42:43,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2019-10-13 19:42:43,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1936 transitions. [2019-10-13 19:42:43,465 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 1936 transitions. Word has length 97 [2019-10-13 19:42:43,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:42:43,465 INFO L462 AbstractCegarLoop]: Abstraction has 1606 states and 1936 transitions. [2019-10-13 19:42:43,465 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:42:43,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 1936 transitions. [2019-10-13 19:42:43,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 19:42:43,469 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:42:43,469 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 19:42:43,469 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:42:43,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:42:43,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1477147143, now seen corresponding path program 1 times [2019-10-13 19:42:43,470 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:42:43,470 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517527055] [2019-10-13 19:42:43,471 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:43,471 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:42:43,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:42:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,789 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:42:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:44,056 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 19:42:44,057 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517527055] [2019-10-13 19:42:44,057 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971257823] [2019-10-13 19:42:44,057 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 19:42:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:42:44,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 19:42:44,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:42:44,507 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 28 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:42:44,507 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:42:44,508 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 20 [2019-10-13 19:42:44,508 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732658581] [2019-10-13 19:42:44,509 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-13 19:42:44,509 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:42:44,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-13 19:42:44,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:42:44,509 INFO L87 Difference]: Start difference. First operand 1606 states and 1936 transitions. Second operand 20 states. [2019-10-13 19:42:45,386 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-13 19:42:45,775 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-10-13 19:42:46,066 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-13 19:42:46,343 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 196