/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:04:22,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:04:22,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:04:22,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:04:22,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:04:22,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:04:22,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:04:22,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:04:22,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:04:22,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:04:22,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:04:22,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:04:22,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:04:22,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:04:22,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:04:22,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:04:22,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:04:22,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:04:22,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:04:22,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:04:22,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:04:22,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:04:22,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:04:22,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:04:22,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:04:22,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:04:22,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:04:22,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:04:22,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:04:22,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:04:22,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:04:22,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:04:22,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:04:22,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:04:22,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:04:22,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:04:22,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:04:22,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:04:22,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:04:22,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:04:22,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:04:22,598 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 22:04:22,625 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:04:22,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:04:22,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:04:22,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:04:22,627 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:04:22,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:04:22,627 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:04:22,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:04:22,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:04:22,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:04:22,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:04:22,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:04:22,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:04:22,628 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:04:22,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:04:22,629 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:04:22,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:04:22,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:04:22,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:04:22,629 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:04:22,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:04:22,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:04:22,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:04:22,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:04:22,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:04:22,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:04:22,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:04:22,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:04:22,631 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:04:22,905 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:04:22,919 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:04:22,922 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:04:22,924 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:04:22,924 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:04:22,925 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product61.cil.c [2019-11-06 22:04:22,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d7a8a0e6/9963db21de30447db9db49dd824513b4/FLAG472a62ae1 [2019-11-06 22:04:23,550 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:04:23,551 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product61.cil.c [2019-11-06 22:04:23,569 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d7a8a0e6/9963db21de30447db9db49dd824513b4/FLAG472a62ae1 [2019-11-06 22:04:23,811 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d7a8a0e6/9963db21de30447db9db49dd824513b4 [2019-11-06 22:04:23,819 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:04:23,821 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:04:23,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:04:23,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:04:23,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:04:23,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:23" (1/1) ... [2019-11-06 22:04:23,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f16a43d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:23, skipping insertion in model container [2019-11-06 22:04:23,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:23" (1/1) ... [2019-11-06 22:04:23,840 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:04:23,896 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:04:24,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:04:24,350 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:04:24,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:04:24,485 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:04:24,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:24 WrapperNode [2019-11-06 22:04:24,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:04:24,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:04:24,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:04:24,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:04:24,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:24" (1/1) ... [2019-11-06 22:04:24,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:24" (1/1) ... [2019-11-06 22:04:24,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:24" (1/1) ... [2019-11-06 22:04:24,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:24" (1/1) ... [2019-11-06 22:04:24,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:24" (1/1) ... [2019-11-06 22:04:24,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:24" (1/1) ... [2019-11-06 22:04:24,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:24" (1/1) ... [2019-11-06 22:04:24,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:04:24,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:04:24,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:04:24,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:04:24,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:04:24,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:04:24,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:04:24,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 22:04:24,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 22:04:24,676 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 22:04:24,677 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 22:04:24,677 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 22:04:24,677 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 22:04:24,677 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 22:04:24,678 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 22:04:24,678 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:04:24,678 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-11-06 22:04:24,678 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 22:04:24,679 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 22:04:24,679 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 22:04:24,680 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 22:04:24,681 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 22:04:24,682 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 22:04:24,682 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 22:04:24,682 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 22:04:24,682 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-06 22:04:24,682 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 22:04:24,682 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 22:04:24,682 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 22:04:24,683 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 22:04:24,683 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 22:04:24,683 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 22:04:24,683 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 22:04:24,683 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 22:04:24,683 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-06 22:04:24,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-11-06 22:04:24,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 22:04:24,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 22:04:24,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 22:04:24,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 22:04:24,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 22:04:24,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 22:04:24,685 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 22:04:24,685 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 22:04:24,685 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 22:04:24,685 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 22:04:24,685 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:04:24,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:04:24,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:04:24,686 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 22:04:24,686 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 22:04:24,686 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 22:04:24,686 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 22:04:24,686 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 22:04:24,686 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 22:04:24,686 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 22:04:24,686 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 22:04:24,686 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 22:04:24,687 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 22:04:24,687 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-06 22:04:24,687 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 22:04:24,687 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 22:04:24,687 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 22:04:24,687 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 22:04:24,687 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 22:04:24,688 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-11-06 22:04:24,688 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 22:04:24,688 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 22:04:24,688 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 22:04:24,688 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:04:24,688 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-06 22:04:24,689 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-11-06 22:04:24,689 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 22:04:24,689 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 22:04:24,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:04:24,689 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 22:04:24,689 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 22:04:24,690 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 22:04:24,690 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 22:04:24,690 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 22:04:24,690 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 22:04:24,690 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 22:04:24,690 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 22:04:24,690 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 22:04:24,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 22:04:24,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 22:04:24,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:04:24,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 22:04:24,691 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 22:04:24,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:04:24,692 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 22:04:24,692 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 22:04:24,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:04:24,692 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 22:04:24,692 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 22:04:24,692 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 22:04:24,692 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 22:04:24,693 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 22:04:24,693 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 22:04:24,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:04:24,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:04:24,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 22:04:24,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:04:25,839 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:04:25,839 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 22:04:25,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:25 BoogieIcfgContainer [2019-11-06 22:04:25,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:04:25,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:04:25,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:04:25,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:04:25,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:04:23" (1/3) ... [2019-11-06 22:04:25,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed5e18d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:25, skipping insertion in model container [2019-11-06 22:04:25,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:24" (2/3) ... [2019-11-06 22:04:25,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed5e18d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:25, skipping insertion in model container [2019-11-06 22:04:25,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:25" (3/3) ... [2019-11-06 22:04:25,852 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product61.cil.c [2019-11-06 22:04:25,862 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:04:25,870 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:04:25,882 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:04:25,909 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:04:25,909 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:04:25,909 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:04:25,909 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:04:25,909 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:04:25,910 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:04:25,910 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:04:25,910 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:04:25,932 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2019-11-06 22:04:25,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-06 22:04:25,940 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:25,942 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:04:25,944 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:25,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:25,948 INFO L82 PathProgramCache]: Analyzing trace with hash -389891839, now seen corresponding path program 1 times [2019-11-06 22:04:25,957 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:25,958 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268373586] [2019-11-06 22:04:25,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:26,602 WARN L191 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:26,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:26,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:26,708 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268373586] [2019-11-06 22:04:26,710 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:26,715 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:04:26,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339841399] [2019-11-06 22:04:26,723 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:04:26,724 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:26,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:04:26,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:04:26,742 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 3 states. [2019-11-06 22:04:28,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:28,091 INFO L93 Difference]: Finished difference Result 351 states and 455 transitions. [2019-11-06 22:04:28,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:04:28,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-11-06 22:04:28,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:28,121 INFO L225 Difference]: With dead ends: 351 [2019-11-06 22:04:28,121 INFO L226 Difference]: Without dead ends: 189 [2019-11-06 22:04:28,129 INFO L630 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 [2019-11-06 22:04:28,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2019-11-06 22:04:28,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 153. [2019-11-06 22:04:28,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-11-06 22:04:28,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 181 transitions. [2019-11-06 22:04:28,248 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 181 transitions. Word has length 46 [2019-11-06 22:04:28,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:28,248 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 181 transitions. [2019-11-06 22:04:28,248 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:04:28,249 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 181 transitions. [2019-11-06 22:04:28,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-06 22:04:28,252 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:28,252 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:04:28,253 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:28,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:28,253 INFO L82 PathProgramCache]: Analyzing trace with hash 999791911, now seen corresponding path program 1 times [2019-11-06 22:04:28,253 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:28,254 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751520760] [2019-11-06 22:04:28,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:28,627 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:28,662 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751520760] [2019-11-06 22:04:28,663 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:28,663 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:04:28,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181631853] [2019-11-06 22:04:28,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:04:28,665 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:28,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:04:28,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:04:28,666 INFO L87 Difference]: Start difference. First operand 153 states and 181 transitions. Second operand 4 states. [2019-11-06 22:04:29,213 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:04:30,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:30,248 INFO L93 Difference]: Finished difference Result 284 states and 346 transitions. [2019-11-06 22:04:30,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:04:30,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-11-06 22:04:30,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:30,251 INFO L225 Difference]: With dead ends: 284 [2019-11-06 22:04:30,252 INFO L226 Difference]: Without dead ends: 173 [2019-11-06 22:04:30,253 INFO L630 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 [2019-11-06 22:04:30,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2019-11-06 22:04:30,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 144. [2019-11-06 22:04:30,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-06 22:04:30,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2019-11-06 22:04:30,294 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 47 [2019-11-06 22:04:30,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:30,295 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2019-11-06 22:04:30,295 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:04:30,295 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2019-11-06 22:04:30,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-06 22:04:30,297 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:30,297 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:04:30,298 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:30,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:30,298 INFO L82 PathProgramCache]: Analyzing trace with hash -314490359, now seen corresponding path program 1 times [2019-11-06 22:04:30,298 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:30,299 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735788910] [2019-11-06 22:04:30,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,658 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:30,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:30,753 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735788910] [2019-11-06 22:04:30,753 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:30,753 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:04:30,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334309144] [2019-11-06 22:04:30,754 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:04:30,754 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:30,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:04:30,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:04:30,755 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 8 states. [2019-11-06 22:04:31,212 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:31,545 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:31,827 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:32,099 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:33,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:33,647 INFO L93 Difference]: Finished difference Result 293 states and 360 transitions. [2019-11-06 22:04:33,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 22:04:33,648 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2019-11-06 22:04:33,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:33,652 INFO L225 Difference]: With dead ends: 293 [2019-11-06 22:04:33,652 INFO L226 Difference]: Without dead ends: 173 [2019-11-06 22:04:33,653 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:04:33,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2019-11-06 22:04:33,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 144. [2019-11-06 22:04:33,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-06 22:04:33,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2019-11-06 22:04:33,694 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 51 [2019-11-06 22:04:33,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:33,695 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2019-11-06 22:04:33,695 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:04:33,695 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2019-11-06 22:04:33,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-11-06 22:04:33,698 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:33,698 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:04:33,698 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:33,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:33,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1957039538, now seen corresponding path program 1 times [2019-11-06 22:04:33,699 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:33,699 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373722311] [2019-11-06 22:04:33,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:34,023 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:34,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:34,153 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373722311] [2019-11-06 22:04:34,153 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:34,153 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:04:34,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779647854] [2019-11-06 22:04:34,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:04:34,154 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:34,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:04:34,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:04:34,155 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand 6 states. [2019-11-06 22:04:34,583 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:35,971 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:04:36,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:36,729 INFO L93 Difference]: Finished difference Result 399 states and 490 transitions. [2019-11-06 22:04:36,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 22:04:36,731 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2019-11-06 22:04:36,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:36,734 INFO L225 Difference]: With dead ends: 399 [2019-11-06 22:04:36,735 INFO L226 Difference]: Without dead ends: 279 [2019-11-06 22:04:36,736 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:04:36,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2019-11-06 22:04:36,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 238. [2019-11-06 22:04:36,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-11-06 22:04:36,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 268 transitions. [2019-11-06 22:04:36,787 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 268 transitions. Word has length 69 [2019-11-06 22:04:36,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:36,788 INFO L462 AbstractCegarLoop]: Abstraction has 238 states and 268 transitions. [2019-11-06 22:04:36,788 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:04:36,788 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 268 transitions. [2019-11-06 22:04:36,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-11-06 22:04:36,790 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:36,790 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:04:36,791 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:36,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:36,791 INFO L82 PathProgramCache]: Analyzing trace with hash 868877799, now seen corresponding path program 1 times [2019-11-06 22:04:36,791 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:36,792 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979857589] [2019-11-06 22:04:36,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:37,184 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:37,340 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979857589] [2019-11-06 22:04:37,341 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:37,341 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 22:04:37,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61938515] [2019-11-06 22:04:37,342 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 22:04:37,342 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:37,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 22:04:37,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:04:37,343 INFO L87 Difference]: Start difference. First operand 238 states and 268 transitions. Second operand 12 states. [2019-11-06 22:04:38,003 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:38,367 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:38,650 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:38,913 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:39,528 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:04:40,630 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:40,991 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:41,291 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:41,588 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:04:41,911 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:42,201 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:43,742 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:44,184 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:45,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:45,213 INFO L93 Difference]: Finished difference Result 830 states and 1046 transitions. [2019-11-06 22:04:45,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-06 22:04:45,213 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2019-11-06 22:04:45,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:45,219 INFO L225 Difference]: With dead ends: 830 [2019-11-06 22:04:45,219 INFO L226 Difference]: Without dead ends: 616 [2019-11-06 22:04:45,221 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-11-06 22:04:45,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-11-06 22:04:45,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 558. [2019-11-06 22:04:45,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2019-11-06 22:04:45,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 648 transitions. [2019-11-06 22:04:45,353 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 648 transitions. Word has length 83 [2019-11-06 22:04:45,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:45,353 INFO L462 AbstractCegarLoop]: Abstraction has 558 states and 648 transitions. [2019-11-06 22:04:45,353 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 22:04:45,354 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 648 transitions. [2019-11-06 22:04:45,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-11-06 22:04:45,357 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:45,358 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:04:45,358 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:45,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:45,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1619741770, now seen corresponding path program 1 times [2019-11-06 22:04:45,359 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:45,359 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6931190] [2019-11-06 22:04:45,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,646 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:45,901 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 17 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-06 22:04:45,902 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6931190] [2019-11-06 22:04:45,902 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602533153] [2019-11-06 22:04:45,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:04:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:46,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-06 22:04:46,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:04:46,333 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:46,335 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 22:04:46,335 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2019-11-06 22:04:46,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900152574] [2019-11-06 22:04:46,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:04:46,337 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:46,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:04:46,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-11-06 22:04:46,337 INFO L87 Difference]: Start difference. First operand 558 states and 648 transitions. Second operand 8 states. [2019-11-06 22:04:47,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:47,820 INFO L93 Difference]: Finished difference Result 1396 states and 1790 transitions. [2019-11-06 22:04:47,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 22:04:47,821 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 162 [2019-11-06 22:04:47,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:47,828 INFO L225 Difference]: With dead ends: 1396 [2019-11-06 22:04:47,829 INFO L226 Difference]: Without dead ends: 986 [2019-11-06 22:04:47,831 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2019-11-06 22:04:47,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2019-11-06 22:04:47,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 912. [2019-11-06 22:04:47,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2019-11-06 22:04:48,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1107 transitions. [2019-11-06 22:04:48,003 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1107 transitions. Word has length 162 [2019-11-06 22:04:48,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:48,004 INFO L462 AbstractCegarLoop]: Abstraction has 912 states and 1107 transitions. [2019-11-06 22:04:48,004 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:04:48,004 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1107 transitions. [2019-11-06 22:04:48,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-11-06 22:04:48,006 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:48,007 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:04:48,211 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:04:48,212 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:48,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:48,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1510920712, now seen corresponding path program 1 times [2019-11-06 22:04:48,213 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:48,213 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984066213] [2019-11-06 22:04:48,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,505 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-06 22:04:48,683 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984066213] [2019-11-06 22:04:48,683 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012538332] [2019-11-06 22:04:48,683 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 [2019-11-06 22:04:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:48,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-06 22:04:48,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:04:48,922 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-06 22:04:48,923 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 22:04:48,923 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 10 [2019-11-06 22:04:48,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476261497] [2019-11-06 22:04:48,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:04:48,924 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:48,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:04:48,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:04:48,925 INFO L87 Difference]: Start difference. First operand 912 states and 1107 transitions. Second operand 6 states. [2019-11-06 22:04:49,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:49,133 INFO L93 Difference]: Finished difference Result 1828 states and 2310 transitions. [2019-11-06 22:04:49,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 22:04:49,133 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2019-11-06 22:04:49,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:49,140 INFO L225 Difference]: With dead ends: 1828 [2019-11-06 22:04:49,140 INFO L226 Difference]: Without dead ends: 940 [2019-11-06 22:04:49,143 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:04:49,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2019-11-06 22:04:49,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 932. [2019-11-06 22:04:49,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2019-11-06 22:04:49,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1131 transitions. [2019-11-06 22:04:49,307 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1131 transitions. Word has length 146 [2019-11-06 22:04:49,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:49,307 INFO L462 AbstractCegarLoop]: Abstraction has 932 states and 1131 transitions. [2019-11-06 22:04:49,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:04:49,308 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1131 transitions. [2019-11-06 22:04:49,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-11-06 22:04:49,310 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:49,310 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:04:49,514 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:04:49,515 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:49,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:49,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1165071670, now seen corresponding path program 1 times [2019-11-06 22:04:49,516 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:49,517 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638578193] [2019-11-06 22:04:49,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:49,865 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:49,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:50,112 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-06 22:04:50,112 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638578193] [2019-11-06 22:04:50,113 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167598865] [2019-11-06 22:04:50,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:04:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:50,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-06 22:04:50,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:04:50,401 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-06 22:04:50,401 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 22:04:50,401 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2019-11-06 22:04:50,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047473447] [2019-11-06 22:04:50,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:04:50,402 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:50,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:04:50,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-11-06 22:04:50,403 INFO L87 Difference]: Start difference. First operand 932 states and 1131 transitions. Second operand 5 states. [2019-11-06 22:04:50,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:50,594 INFO L93 Difference]: Finished difference Result 1658 states and 2062 transitions. [2019-11-06 22:04:50,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:04:50,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2019-11-06 22:04:50,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:50,600 INFO L225 Difference]: With dead ends: 1658 [2019-11-06 22:04:50,600 INFO L226 Difference]: Without dead ends: 750 [2019-11-06 22:04:50,605 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-11-06 22:04:50,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2019-11-06 22:04:50,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 750. [2019-11-06 22:04:50,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 750 states. [2019-11-06 22:04:50,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 901 transitions. [2019-11-06 22:04:50,785 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 901 transitions. Word has length 146 [2019-11-06 22:04:50,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:50,785 INFO L462 AbstractCegarLoop]: Abstraction has 750 states and 901 transitions. [2019-11-06 22:04:50,786 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:04:50,786 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 901 transitions. [2019-11-06 22:04:50,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-11-06 22:04:50,788 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:50,788 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:04:50,993 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:04:50,993 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:50,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:50,994 INFO L82 PathProgramCache]: Analyzing trace with hash 667358703, now seen corresponding path program 1 times [2019-11-06 22:04:50,994 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:50,994 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967767498] [2019-11-06 22:04:50,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,296 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-06 22:04:51,675 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967767498] [2019-11-06 22:04:51,675 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307242448] [2019-11-06 22:04:51,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:04:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-06 22:04:51,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:04:52,159 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:52,160 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:04:52,160 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2019-11-06 22:04:52,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657199456] [2019-11-06 22:04:52,161 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-06 22:04:52,162 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:52,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-06 22:04:52,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-11-06 22:04:52,162 INFO L87 Difference]: Start difference. First operand 750 states and 901 transitions. Second operand 22 states. [2019-11-06 22:04:53,113 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:54,051 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:54,391 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:04:54,889 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:04:56,704 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:57,129 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:57,412 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:57,739 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:58,061 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:04:58,452 WARN L191 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:58,868 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:59,181 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:04:59,468 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:04:59,779 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:05:00,304 WARN L191 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 190 [2019-11-06 22:05:00,677 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:05:01,246 WARN L191 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 191 [2019-11-06 22:05:01,544 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:05:01,867 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:05:02,403 WARN L191 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 191 [2019-11-06 22:05:02,705 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 191