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_spec1_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:33:54,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:33:54,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:33:54,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:33:54,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:33:54,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:33:54,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:33:54,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:33:54,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:33:54,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:33:54,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:33:54,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:33:54,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:33:54,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:33:54,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:33:54,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:33:54,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:33:54,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:33:54,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:33:54,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:33:54,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:33:54,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:33:54,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:33:54,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:33:54,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:33:54,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:33:54,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:33:54,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:33:54,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:33:54,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:33:54,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:33:54,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:33:54,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:33:54,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:33:54,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:33:54,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:33:54,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:33:54,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:33:54,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:33:54,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:33:54,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:33:54,468 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:33:54,481 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:33:54,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:33:54,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:33:54,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:33:54,483 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:33:54,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:33:54,484 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:33:54,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:33:54,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:33:54,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:33:54,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:33:54,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:33:54,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:33:54,485 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:33:54,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:33:54,485 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:33:54,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:33:54,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:33:54,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:33:54,486 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:33:54,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:33:54,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:33:54,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:33:54,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:33:54,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:33:54,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:33:54,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:33:54,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:33:54,488 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:33:54,811 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:33:54,824 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:33:54,827 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:33:54,829 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:33:54,829 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:33:54,830 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product60.cil.c [2019-10-14 23:33:54,901 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/461504874/03b7ec4170994594aeb5338b6db32103/FLAG1a1436aae [2019-10-14 23:33:55,446 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:33:55,446 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product60.cil.c [2019-10-14 23:33:55,459 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/461504874/03b7ec4170994594aeb5338b6db32103/FLAG1a1436aae [2019-10-14 23:33:55,736 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/461504874/03b7ec4170994594aeb5338b6db32103 [2019-10-14 23:33:55,746 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:33:55,747 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:33:55,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:33:55,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:33:55,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:33:55,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:33:55" (1/1) ... [2019-10-14 23:33:55,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@626b4f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:55, skipping insertion in model container [2019-10-14 23:33:55,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:33:55" (1/1) ... [2019-10-14 23:33:55,763 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:33:55,817 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:33:56,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:33:56,325 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:33:56,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:33:56,472 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:33:56,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:56 WrapperNode [2019-10-14 23:33:56,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:33:56,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:33:56,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:33:56,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:33:56,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:56" (1/1) ... [2019-10-14 23:33:56,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:56" (1/1) ... [2019-10-14 23:33:56,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:56" (1/1) ... [2019-10-14 23:33:56,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:56" (1/1) ... [2019-10-14 23:33:56,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:56" (1/1) ... [2019-10-14 23:33:56,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:56" (1/1) ... [2019-10-14 23:33:56,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:56" (1/1) ... [2019-10-14 23:33:56,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:33:56,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:33:56,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:33:56,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:33:56,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:33:56,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:33:56,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:33:56,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:33:56,610 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:33:56,610 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:33:56,610 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:33:56,610 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:33:56,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:33:56,610 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:33:56,611 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:33:56,611 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:33:56,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:33:56,611 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:33:56,611 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:33:56,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:33:56,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:33:56,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-14 23:33:56,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:33:56,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:33:56,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:33:56,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:33:56,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:33:56,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:33:56,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:33:56,613 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:33:56,613 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:33:56,613 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:33:56,614 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:33:56,614 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:33:56,614 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:33:56,614 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:33:56,614 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:33:56,614 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:33:56,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:33:56,615 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:33:56,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:33:56,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:33:56,615 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-14 23:33:56,615 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-14 23:33:56,615 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:33:56,616 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:33:56,616 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:33:56,616 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:33:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:33:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:33:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:33:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:33:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:33:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:33:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:33:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:33:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:33:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:33:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:33:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:33:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:33:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:33:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:33:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:33:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:33:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:33:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:33:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:33:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:33:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:33:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:33:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:33:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:33:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-14 23:33:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:33:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:33:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:33:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:33:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:33:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:33:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:33:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:33:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:33:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:33:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:33:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:33:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:33:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:33:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:33:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:33:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-14 23:33:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-14 23:33:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:33:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:33:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:33:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:33:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:33:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:33:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:33:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:33:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:33:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:33:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:33:56,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:33:56,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:33:57,693 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:33:57,694 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:33:57,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:33:57 BoogieIcfgContainer [2019-10-14 23:33:57,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:33:57,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:33:57,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:33:57,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:33:57,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:33:55" (1/3) ... [2019-10-14 23:33:57,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe00a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:33:57, skipping insertion in model container [2019-10-14 23:33:57,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:56" (2/3) ... [2019-10-14 23:33:57,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe00a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:33:57, skipping insertion in model container [2019-10-14 23:33:57,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:33:57" (3/3) ... [2019-10-14 23:33:57,703 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product60.cil.c [2019-10-14 23:33:57,713 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:33:57,721 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:33:57,732 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:33:57,757 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:33:57,757 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:33:57,758 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:33:57,758 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:33:57,758 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:33:57,758 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:33:57,758 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:33:57,758 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:33:57,781 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states. [2019-10-14 23:33:57,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-14 23:33:57,791 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:33:57,792 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:33:57,794 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:33:57,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:33:57,800 INFO L82 PathProgramCache]: Analyzing trace with hash -868868404, now seen corresponding path program 1 times [2019-10-14 23:33:57,808 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:33:57,809 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71957805] [2019-10-14 23:33:57,809 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:33:57,809 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:33:57,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:33:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:58,428 WARN L191 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:33:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:58,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:33:58,537 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71957805] [2019-10-14 23:33:58,539 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:33:58,539 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:33:58,540 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223714817] [2019-10-14 23:33:58,545 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:33:58,546 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:33:58,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:33:58,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:33:58,563 INFO L87 Difference]: Start difference. First operand 193 states. Second operand 3 states. [2019-10-14 23:33:59,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:33:59,811 INFO L93 Difference]: Finished difference Result 346 states and 447 transitions. [2019-10-14 23:33:59,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:33:59,813 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-14 23:33:59,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:33:59,828 INFO L225 Difference]: With dead ends: 346 [2019-10-14 23:33:59,829 INFO L226 Difference]: Without dead ends: 187 [2019-10-14 23:33:59,833 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:33:59,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2019-10-14 23:33:59,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 150. [2019-10-14 23:33:59,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-10-14 23:33:59,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 176 transitions. [2019-10-14 23:33:59,929 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 176 transitions. Word has length 46 [2019-10-14 23:33:59,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:33:59,929 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 176 transitions. [2019-10-14 23:33:59,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:33:59,930 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 176 transitions. [2019-10-14 23:33:59,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-14 23:33:59,933 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:33:59,933 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:33:59,933 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:33:59,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:33:59,934 INFO L82 PathProgramCache]: Analyzing trace with hash -276167130, now seen corresponding path program 1 times [2019-10-14 23:33:59,934 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:33:59,934 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966688288] [2019-10-14 23:33:59,935 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:33:59,935 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:33:59,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:33:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:00,276 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:00,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:00,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:34:00,311 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966688288] [2019-10-14 23:34:00,311 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:00,311 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:34:00,312 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349599160] [2019-10-14 23:34:00,313 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:34:00,314 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:00,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:34:00,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:34:00,314 INFO L87 Difference]: Start difference. First operand 150 states and 176 transitions. Second operand 4 states. [2019-10-14 23:34:00,784 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:01,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:01,760 INFO L93 Difference]: Finished difference Result 269 states and 326 transitions. [2019-10-14 23:34:01,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:34:01,761 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-14 23:34:01,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:01,765 INFO L225 Difference]: With dead ends: 269 [2019-10-14 23:34:01,765 INFO L226 Difference]: Without dead ends: 171 [2019-10-14 23:34:01,767 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:34:01,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2019-10-14 23:34:01,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 141. [2019-10-14 23:34:01,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-10-14 23:34:01,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 164 transitions. [2019-10-14 23:34:01,806 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 164 transitions. Word has length 47 [2019-10-14 23:34:01,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:01,807 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 164 transitions. [2019-10-14 23:34:01,807 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:34:01,807 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 164 transitions. [2019-10-14 23:34:01,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:34:01,809 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:01,809 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:34:01,809 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:01,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:01,810 INFO L82 PathProgramCache]: Analyzing trace with hash 106155889, now seen corresponding path program 1 times [2019-10-14 23:34:01,810 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:01,810 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426671356] [2019-10-14 23:34:01,810 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:01,811 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:01,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:02,142 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:02,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:34:02,224 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426671356] [2019-10-14 23:34:02,224 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:02,224 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:34:02,225 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144496024] [2019-10-14 23:34:02,225 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:34:02,226 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:02,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:34:02,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:34:02,226 INFO L87 Difference]: Start difference. First operand 141 states and 164 transitions. Second operand 8 states. [2019-10-14 23:34:02,631 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:02,962 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:34:03,242 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:03,488 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:04,273 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:06,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:06,398 INFO L93 Difference]: Finished difference Result 482 states and 593 transitions. [2019-10-14 23:34:06,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:34:06,399 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2019-10-14 23:34:06,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:06,403 INFO L225 Difference]: With dead ends: 482 [2019-10-14 23:34:06,404 INFO L226 Difference]: Without dead ends: 365 [2019-10-14 23:34:06,405 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:34:06,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2019-10-14 23:34:06,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 296. [2019-10-14 23:34:06,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2019-10-14 23:34:06,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 356 transitions. [2019-10-14 23:34:06,470 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 356 transitions. Word has length 52 [2019-10-14 23:34:06,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:06,471 INFO L462 AbstractCegarLoop]: Abstraction has 296 states and 356 transitions. [2019-10-14 23:34:06,471 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:34:06,471 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 356 transitions. [2019-10-14 23:34:06,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:34:06,474 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:06,474 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:34:06,474 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:06,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:06,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1448124188, now seen corresponding path program 1 times [2019-10-14 23:34:06,475 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:06,476 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273857525] [2019-10-14 23:34:06,476 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:06,476 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:06,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,831 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:34:06,938 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273857525] [2019-10-14 23:34:06,938 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:06,938 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:34:06,939 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632905270] [2019-10-14 23:34:06,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:34:06,939 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:06,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:34:06,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:34:06,940 INFO L87 Difference]: Start difference. First operand 296 states and 356 transitions. Second operand 8 states. [2019-10-14 23:34:07,455 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:08,567 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:08,907 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:09,231 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:09,558 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:10,040 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:11,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:11,261 INFO L93 Difference]: Finished difference Result 957 states and 1227 transitions. [2019-10-14 23:34:11,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 23:34:11,261 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-10-14 23:34:11,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:11,268 INFO L225 Difference]: With dead ends: 957 [2019-10-14 23:34:11,268 INFO L226 Difference]: Without dead ends: 685 [2019-10-14 23:34:11,270 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:34:11,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2019-10-14 23:34:11,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 547. [2019-10-14 23:34:11,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2019-10-14 23:34:11,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 662 transitions. [2019-10-14 23:34:11,421 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 662 transitions. Word has length 57 [2019-10-14 23:34:11,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:11,421 INFO L462 AbstractCegarLoop]: Abstraction has 547 states and 662 transitions. [2019-10-14 23:34:11,421 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:34:11,421 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 662 transitions. [2019-10-14 23:34:11,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-14 23:34:11,424 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:11,425 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:34:11,425 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:11,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:11,425 INFO L82 PathProgramCache]: Analyzing trace with hash -432580704, now seen corresponding path program 1 times [2019-10-14 23:34:11,425 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:11,426 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565085838] [2019-10-14 23:34:11,426 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:11,426 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:11,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,703 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:11,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:34:11,784 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565085838] [2019-10-14 23:34:11,784 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:11,784 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:34:11,784 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282367721] [2019-10-14 23:34:11,785 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:34:11,785 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:11,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:34:11,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:34:11,786 INFO L87 Difference]: Start difference. First operand 547 states and 662 transitions. Second operand 9 states. [2019-10-14 23:34:12,217 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:13,226 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:13,510 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:13,778 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:14,525 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:14,864 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:16,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:16,021 INFO L93 Difference]: Finished difference Result 1505 states and 1996 transitions. [2019-10-14 23:34:16,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 23:34:16,021 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2019-10-14 23:34:16,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:16,029 INFO L225 Difference]: With dead ends: 1505 [2019-10-14 23:34:16,029 INFO L226 Difference]: Without dead ends: 982 [2019-10-14 23:34:16,031 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-10-14 23:34:16,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2019-10-14 23:34:16,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 795. [2019-10-14 23:34:16,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2019-10-14 23:34:16,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 971 transitions. [2019-10-14 23:34:16,218 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 971 transitions. Word has length 61 [2019-10-14 23:34:16,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:16,219 INFO L462 AbstractCegarLoop]: Abstraction has 795 states and 971 transitions. [2019-10-14 23:34:16,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:34:16,219 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 971 transitions. [2019-10-14 23:34:16,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-14 23:34:16,225 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:16,226 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, 1, 1] [2019-10-14 23:34:16,226 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:16,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:16,227 INFO L82 PathProgramCache]: Analyzing trace with hash -2030363971, now seen corresponding path program 1 times [2019-10-14 23:34:16,227 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:16,227 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864769744] [2019-10-14 23:34:16,227 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:16,228 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:16,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,530 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:34:16,671 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864769744] [2019-10-14 23:34:16,672 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:16,672 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:34:16,672 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191827653] [2019-10-14 23:34:16,673 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:34:16,673 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:16,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:34:16,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:34:16,674 INFO L87 Difference]: Start difference. First operand 795 states and 971 transitions. Second operand 9 states. [2019-10-14 23:34:18,008 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:18,277 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:34:18,584 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:18,840 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:20,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:20,073 INFO L93 Difference]: Finished difference Result 1837 states and 2468 transitions. [2019-10-14 23:34:20,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:34:20,077 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2019-10-14 23:34:20,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:20,087 INFO L225 Difference]: With dead ends: 1837 [2019-10-14 23:34:20,087 INFO L226 Difference]: Without dead ends: 1066 [2019-10-14 23:34:20,090 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:34:20,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2019-10-14 23:34:20,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 821. [2019-10-14 23:34:20,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2019-10-14 23:34:20,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 999 transitions. [2019-10-14 23:34:20,269 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 999 transitions. Word has length 99 [2019-10-14 23:34:20,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:20,270 INFO L462 AbstractCegarLoop]: Abstraction has 821 states and 999 transitions. [2019-10-14 23:34:20,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:34:20,270 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 999 transitions. [2019-10-14 23:34:20,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-14 23:34:20,272 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:20,272 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, 1, 1] [2019-10-14 23:34:20,273 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:20,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:20,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1136877633, now seen corresponding path program 1 times [2019-10-14 23:34:20,273 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:20,273 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555250664] [2019-10-14 23:34:20,274 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:20,274 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:20,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,539 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:34:20,718 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555250664] [2019-10-14 23:34:20,718 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:20,718 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-14 23:34:20,718 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402477867] [2019-10-14 23:34:20,719 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 23:34:20,719 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:20,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 23:34:20,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:34:20,720 INFO L87 Difference]: Start difference. First operand 821 states and 999 transitions. Second operand 11 states. [2019-10-14 23:34:21,246 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:21,490 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:21,731 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:22,583 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:22,863 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:23,120 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:24,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:24,471 INFO L93 Difference]: Finished difference Result 1883 states and 2516 transitions. [2019-10-14 23:34:24,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 23:34:24,471 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 99 [2019-10-14 23:34:24,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:24,479 INFO L225 Difference]: With dead ends: 1883 [2019-10-14 23:34:24,480 INFO L226 Difference]: Without dead ends: 1086 [2019-10-14 23:34:24,484 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:34:24,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2019-10-14 23:34:24,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 837. [2019-10-14 23:34:24,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 837 states. [2019-10-14 23:34:24,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1015 transitions. [2019-10-14 23:34:24,654 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1015 transitions. Word has length 99 [2019-10-14 23:34:24,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:24,655 INFO L462 AbstractCegarLoop]: Abstraction has 837 states and 1015 transitions. [2019-10-14 23:34:24,655 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 23:34:24,655 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1015 transitions. [2019-10-14 23:34:24,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-14 23:34:24,659 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:24,659 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, 1, 1] [2019-10-14 23:34:24,659 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:24,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:24,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1144636992, now seen corresponding path program 1 times [2019-10-14 23:34:24,665 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:24,665 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187677045] [2019-10-14 23:34:24,666 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:24,666 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:24,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:24,983 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:34:25,162 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187677045] [2019-10-14 23:34:25,162 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:25,163 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:34:25,163 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914725453] [2019-10-14 23:34:25,164 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:34:25,164 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:25,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:34:25,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:34:25,165 INFO L87 Difference]: Start difference. First operand 837 states and 1015 transitions. Second operand 7 states. [2019-10-14 23:34:25,614 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:26,129 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:28,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:28,709 INFO L93 Difference]: Finished difference Result 2811 states and 3793 transitions. [2019-10-14 23:34:28,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:34:28,709 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2019-10-14 23:34:28,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:28,722 INFO L225 Difference]: With dead ends: 2811 [2019-10-14 23:34:28,722 INFO L226 Difference]: Without dead ends: 1998 [2019-10-14 23:34:28,726 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:34:28,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2019-10-14 23:34:29,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1675. [2019-10-14 23:34:29,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1675 states. [2019-10-14 23:34:29,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 2053 transitions. [2019-10-14 23:34:29,011 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 2053 transitions. Word has length 99 [2019-10-14 23:34:29,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:29,011 INFO L462 AbstractCegarLoop]: Abstraction has 1675 states and 2053 transitions. [2019-10-14 23:34:29,011 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:34:29,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 2053 transitions. [2019-10-14 23:34:29,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-14 23:34:29,014 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:29,015 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, 1, 1, 1, 1, 1, 1] [2019-10-14 23:34:29,015 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:29,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:29,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1694878310, now seen corresponding path program 1 times [2019-10-14 23:34:29,016 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:29,016 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666234451] [2019-10-14 23:34:29,016 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:29,016 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:29,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:29,274 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:29,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:34:29,552 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666234451] [2019-10-14 23:34:29,552 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260638211] [2019-10-14 23:34:29,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:34:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:29,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-14 23:34:29,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:34:29,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:34:29,972 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:34:29,972 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 22 [2019-10-14 23:34:29,972 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831674502] [2019-10-14 23:34:29,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:34:29,973 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:29,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:34:29,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:34:29,974 INFO L87 Difference]: Start difference. First operand 1675 states and 2053 transitions. Second operand 8 states. [2019-10-14 23:34:30,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:30,731 INFO L93 Difference]: Finished difference Result 3258 states and 4014 transitions. [2019-10-14 23:34:30,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:34:30,732 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2019-10-14 23:34:30,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:30,747 INFO L225 Difference]: With dead ends: 3258 [2019-10-14 23:34:30,747 INFO L226 Difference]: Without dead ends: 1607 [2019-10-14 23:34:30,754 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:34:30,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2019-10-14 23:34:31,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1607. [2019-10-14 23:34:31,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1607 states. [2019-10-14 23:34:31,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 1931 transitions. [2019-10-14 23:34:31,089 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 1931 transitions. Word has length 103 [2019-10-14 23:34:31,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:31,089 INFO L462 AbstractCegarLoop]: Abstraction has 1607 states and 1931 transitions. [2019-10-14 23:34:31,089 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:34:31,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 1931 transitions. [2019-10-14 23:34:31,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-14 23:34:31,095 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:31,095 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:34:31,299 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:34:31,300 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:31,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:31,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1284440909, now seen corresponding path program 1 times [2019-10-14 23:34:31,301 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:31,301 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554611596] [2019-10-14 23:34:31,301 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:31,301 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:31,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,699 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,000 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 17 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-14 23:34:32,000 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554611596] [2019-10-14 23:34:32,001 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984482679] [2019-10-14 23:34:32,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:34:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-14 23:34:32,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:34:32,356 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:34:32,357 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:34:32,357 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 19 [2019-10-14 23:34:32,357 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578374794] [2019-10-14 23:34:32,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:34:32,358 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:32,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:34:32,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2019-10-14 23:34:32,359 INFO L87 Difference]: Start difference. First operand 1607 states and 1931 transitions. Second operand 9 states.