/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:00:48,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:00:48,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:00:48,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:00:48,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:00:48,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:00:48,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:00:48,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:00:48,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:00:48,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:00:48,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:00:48,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:00:48,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:00:48,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:00:48,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:00:48,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:00:48,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:00:48,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:00:48,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:00:48,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:00:48,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:00:48,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:00:48,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:00:48,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:00:48,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:00:48,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:00:48,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:00:48,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:00:48,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:00:48,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:00:48,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:00:48,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:00:48,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:00:48,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:00:48,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:00:48,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:00:48,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:00:48,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:00:48,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:00:48,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:00:48,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:00:48,640 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 22:00:48,676 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:00:48,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:00:48,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:00:48,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:00:48,678 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:00:48,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:00:48,678 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:00:48,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:00:48,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:00:48,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:00:48,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:00:48,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:00:48,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:00:48,681 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:00:48,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:00:48,681 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:00:48,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:00:48,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:00:48,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:00:48,683 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:00:48,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:00:48,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:00:48,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:00:48,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:00:48,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:00:48,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:00:48,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:00:48,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:00:48,685 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:00:48,956 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:00:48,974 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:00:48,979 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:00:48,981 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:00:48,981 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:00:48,982 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product57.cil.c [2019-11-06 22:00:49,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/134c121b2/f771338f721242899452ab71a382e001/FLAG4599cbd16 [2019-11-06 22:00:49,627 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:00:49,630 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product57.cil.c [2019-11-06 22:00:49,650 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/134c121b2/f771338f721242899452ab71a382e001/FLAG4599cbd16 [2019-11-06 22:00:49,928 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/134c121b2/f771338f721242899452ab71a382e001 [2019-11-06 22:00:49,936 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:00:49,938 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:00:49,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:00:49,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:00:49,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:00:49,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:49" (1/1) ... [2019-11-06 22:00:49,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@597a5628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:49, skipping insertion in model container [2019-11-06 22:00:49,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:49" (1/1) ... [2019-11-06 22:00:49,955 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:00:50,004 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:00:50,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:00:50,462 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:00:50,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:00:50,617 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:00:50,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:50 WrapperNode [2019-11-06 22:00:50,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:00:50,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:00:50,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:00:50,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:00:50,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:50" (1/1) ... [2019-11-06 22:00:50,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:50" (1/1) ... [2019-11-06 22:00:50,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:50" (1/1) ... [2019-11-06 22:00:50,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:50" (1/1) ... [2019-11-06 22:00:50,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:50" (1/1) ... [2019-11-06 22:00:50,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:50" (1/1) ... [2019-11-06 22:00:50,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:50" (1/1) ... [2019-11-06 22:00:50,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:00:50,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:00:50,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:00:50,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:00:50,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:00:50,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:00:50,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:00:50,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 22:00:50,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 22:00:50,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 22:00:50,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 22:00:50,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 22:00:50,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 22:00:50,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 22:00:50,782 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 22:00:50,782 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 22:00:50,783 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 22:00:50,783 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 22:00:50,783 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 22:00:50,783 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 22:00:50,783 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 22:00:50,784 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-06 22:00:50,784 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 22:00:50,784 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 22:00:50,784 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 22:00:50,784 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 22:00:50,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-11-06 22:00:50,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 22:00:50,785 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 22:00:50,785 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 22:00:50,785 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:00:50,785 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 22:00:50,785 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 22:00:50,786 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 22:00:50,786 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 22:00:50,786 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 22:00:50,786 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 22:00:50,786 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 22:00:50,786 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 22:00:50,787 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-06 22:00:50,787 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 22:00:50,787 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 22:00:50,787 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 22:00:50,787 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 22:00:50,787 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 22:00:50,787 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:00:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:00:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:00:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 22:00:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 22:00:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 22:00:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 22:00:50,789 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 22:00:50,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 22:00:50,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 22:00:50,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:00:50,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 22:00:50,789 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 22:00:50,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:00:50,790 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 22:00:50,790 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 22:00:50,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:00:50,790 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 22:00:50,790 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 22:00:50,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:00:50,791 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 22:00:50,791 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 22:00:50,791 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 22:00:50,791 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 22:00:50,791 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 22:00:50,792 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 22:00:50,792 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 22:00:50,792 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 22:00:50,792 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-06 22:00:50,792 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 22:00:50,792 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 22:00:50,793 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 22:00:50,793 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 22:00:50,793 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 22:00:50,793 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 22:00:50,793 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-11-06 22:00:50,793 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 22:00:50,794 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 22:00:50,794 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 22:00:50,794 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 22:00:50,794 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 22:00:50,794 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 22:00:50,794 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 22:00:50,795 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:00:50,795 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-06 22:00:50,795 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 22:00:50,795 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 22:00:50,795 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 22:00:50,795 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 22:00:50,795 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 22:00:50,796 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 22:00:50,796 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 22:00:50,796 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:00:50,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:00:50,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 22:00:50,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:00:51,993 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:00:51,994 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 22:00:51,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:51 BoogieIcfgContainer [2019-11-06 22:00:51,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:00:51,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:00:51,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:00:52,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:00:52,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:00:49" (1/3) ... [2019-11-06 22:00:52,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df3c073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:52, skipping insertion in model container [2019-11-06 22:00:52,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:50" (2/3) ... [2019-11-06 22:00:52,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df3c073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:52, skipping insertion in model container [2019-11-06 22:00:52,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:51" (3/3) ... [2019-11-06 22:00:52,006 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product57.cil.c [2019-11-06 22:00:52,016 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:00:52,025 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:00:52,037 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:00:52,074 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:00:52,075 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:00:52,075 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:00:52,075 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:00:52,075 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:00:52,075 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:00:52,075 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:00:52,075 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:00:52,103 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2019-11-06 22:00:52,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-06 22:00:52,119 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:52,121 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:52,123 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:52,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:52,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1038310593, now seen corresponding path program 1 times [2019-11-06 22:00:52,136 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:52,137 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871921033] [2019-11-06 22:00:52,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:52,814 WARN L191 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:52,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:52,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:52,942 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871921033] [2019-11-06 22:00:52,943 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:52,945 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:00:52,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060281386] [2019-11-06 22:00:52,961 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:00:52,962 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:52,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:00:52,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:00:52,980 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 3 states. [2019-11-06 22:00:54,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:54,147 INFO L93 Difference]: Finished difference Result 335 states and 432 transitions. [2019-11-06 22:00:54,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:00:54,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-11-06 22:00:54,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:54,164 INFO L225 Difference]: With dead ends: 335 [2019-11-06 22:00:54,164 INFO L226 Difference]: Without dead ends: 180 [2019-11-06 22:00:54,169 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:00:54,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2019-11-06 22:00:54,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 146. [2019-11-06 22:00:54,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-11-06 22:00:54,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2019-11-06 22:00:54,286 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 52 [2019-11-06 22:00:54,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:54,287 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2019-11-06 22:00:54,287 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:00:54,287 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2019-11-06 22:00:54,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-06 22:00:54,291 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:54,291 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:54,292 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:54,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:54,292 INFO L82 PathProgramCache]: Analyzing trace with hash 2043760100, now seen corresponding path program 1 times [2019-11-06 22:00:54,292 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:54,292 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167983208] [2019-11-06 22:00:54,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:54,659 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:54,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:54,724 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167983208] [2019-11-06 22:00:54,724 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:54,724 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:00:54,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142829257] [2019-11-06 22:00:54,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:00:54,727 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:54,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:00:54,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:00:54,728 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand 4 states. [2019-11-06 22:00:55,169 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:56,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:56,054 INFO L93 Difference]: Finished difference Result 268 states and 323 transitions. [2019-11-06 22:00:56,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:00:56,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-11-06 22:00:56,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:56,058 INFO L225 Difference]: With dead ends: 268 [2019-11-06 22:00:56,058 INFO L226 Difference]: Without dead ends: 164 [2019-11-06 22:00:56,060 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:00:56,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-11-06 22:00:56,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 137. [2019-11-06 22:00:56,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-11-06 22:00:56,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2019-11-06 22:00:56,096 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 53 [2019-11-06 22:00:56,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:56,097 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2019-11-06 22:00:56,097 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:00:56,097 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2019-11-06 22:00:56,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-06 22:00:56,099 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:56,100 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:56,100 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:56,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:56,100 INFO L82 PathProgramCache]: Analyzing trace with hash -69539003, now seen corresponding path program 1 times [2019-11-06 22:00:56,101 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:56,101 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981563226] [2019-11-06 22:00:56,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,476 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:56,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:56,617 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981563226] [2019-11-06 22:00:56,618 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:56,618 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:00:56,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267449193] [2019-11-06 22:00:56,619 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:00:56,619 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:56,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:00:56,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:00:56,620 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand 8 states. [2019-11-06 22:00:57,069 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:57,433 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:57,710 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:57,971 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:59,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:59,396 INFO L93 Difference]: Finished difference Result 277 states and 337 transitions. [2019-11-06 22:00:59,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 22:00:59,397 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-11-06 22:00:59,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:59,399 INFO L225 Difference]: With dead ends: 277 [2019-11-06 22:00:59,399 INFO L226 Difference]: Without dead ends: 164 [2019-11-06 22:00:59,401 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 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 22:00:59,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-11-06 22:00:59,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 137. [2019-11-06 22:00:59,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-11-06 22:00:59,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 158 transitions. [2019-11-06 22:00:59,435 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 158 transitions. Word has length 57 [2019-11-06 22:00:59,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:59,436 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 158 transitions. [2019-11-06 22:00:59,436 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:00:59,436 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 158 transitions. [2019-11-06 22:00:59,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-11-06 22:00:59,439 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:59,439 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:59,439 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:59,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:59,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1758854223, now seen corresponding path program 1 times [2019-11-06 22:00:59,440 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:59,440 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087331669] [2019-11-06 22:00:59,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,734 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:59,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:59,815 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087331669] [2019-11-06 22:00:59,815 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:59,815 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:00:59,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921108303] [2019-11-06 22:00:59,816 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:00:59,816 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:59,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:00:59,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:00:59,817 INFO L87 Difference]: Start difference. First operand 137 states and 158 transitions. Second operand 6 states. [2019-11-06 22:01:00,178 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:01:01,448 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:02,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:01:02,273 INFO L93 Difference]: Finished difference Result 381 states and 467 transitions. [2019-11-06 22:01:02,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 22:01:02,273 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2019-11-06 22:01:02,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:01:02,279 INFO L225 Difference]: With dead ends: 381 [2019-11-06 22:01:02,279 INFO L226 Difference]: Without dead ends: 268 [2019-11-06 22:01:02,280 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:01:02,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2019-11-06 22:01:02,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 227. [2019-11-06 22:01:02,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2019-11-06 22:01:02,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 259 transitions. [2019-11-06 22:01:02,337 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 259 transitions. Word has length 70 [2019-11-06 22:01:02,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:01:02,338 INFO L462 AbstractCegarLoop]: Abstraction has 227 states and 259 transitions. [2019-11-06 22:01:02,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:01:02,338 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 259 transitions. [2019-11-06 22:01:02,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-11-06 22:01:02,341 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:01:02,341 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:01:02,341 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:01:02,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:01:02,342 INFO L82 PathProgramCache]: Analyzing trace with hash 19039556, now seen corresponding path program 1 times [2019-11-06 22:01:02,342 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:01:02,342 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156502428] [2019-11-06 22:01:02,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:01:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:02,654 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:01:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:02,771 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 22:01:02,772 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156502428] [2019-11-06 22:01:02,772 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:01:02,772 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:01:02,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452679096] [2019-11-06 22:01:02,774 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:01:02,775 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:01:02,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:01:02,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:01:02,777 INFO L87 Difference]: Start difference. First operand 227 states and 259 transitions. Second operand 8 states. [2019-11-06 22:01:03,209 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:01:04,794 WARN L191 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:05,085 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:05,350 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:05,596 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:01:06,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:01:06,424 INFO L93 Difference]: Finished difference Result 603 states and 748 transitions. [2019-11-06 22:01:06,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-06 22:01:06,425 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2019-11-06 22:01:06,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:01:06,429 INFO L225 Difference]: With dead ends: 603 [2019-11-06 22:01:06,429 INFO L226 Difference]: Without dead ends: 400 [2019-11-06 22:01:06,430 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-11-06 22:01:06,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2019-11-06 22:01:06,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 360. [2019-11-06 22:01:06,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2019-11-06 22:01:06,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 419 transitions. [2019-11-06 22:01:06,513 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 419 transitions. Word has length 84 [2019-11-06 22:01:06,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:01:06,514 INFO L462 AbstractCegarLoop]: Abstraction has 360 states and 419 transitions. [2019-11-06 22:01:06,514 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:01:06,514 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 419 transitions. [2019-11-06 22:01:06,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-06 22:01:06,516 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:01:06,516 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:01:06,516 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:01:06,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:01:06,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1361015554, now seen corresponding path program 1 times [2019-11-06 22:01:06,517 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:01:06,517 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998005062] [2019-11-06 22:01:06,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:01:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:06,825 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:01:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:06,942 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 22:01:06,942 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998005062] [2019-11-06 22:01:06,942 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:01:06,942 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 22:01:06,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437492274] [2019-11-06 22:01:06,943 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:01:06,943 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:01:06,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 22:01:06,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:01:06,944 INFO L87 Difference]: Start difference. First operand 360 states and 419 transitions. Second operand 10 states. [2019-11-06 22:01:07,401 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:01:08,986 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:09,283 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:01:09,581 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:01:09,834 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:01:10,171 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:11,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:01:11,452 INFO L93 Difference]: Finished difference Result 819 states and 1032 transitions. [2019-11-06 22:01:11,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-06 22:01:11,453 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2019-11-06 22:01:11,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:01:11,460 INFO L225 Difference]: With dead ends: 819 [2019-11-06 22:01:11,460 INFO L226 Difference]: Without dead ends: 605 [2019-11-06 22:01:11,461 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-11-06 22:01:11,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2019-11-06 22:01:11,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 537. [2019-11-06 22:01:11,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2019-11-06 22:01:11,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 634 transitions. [2019-11-06 22:01:11,544 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 634 transitions. Word has length 88 [2019-11-06 22:01:11,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:01:11,545 INFO L462 AbstractCegarLoop]: Abstraction has 537 states and 634 transitions. [2019-11-06 22:01:11,545 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 22:01:11,545 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 634 transitions. [2019-11-06 22:01:11,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-06 22:01:11,547 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:01:11,547 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:01:11,547 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:01:11,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:01:11,548 INFO L82 PathProgramCache]: Analyzing trace with hash 2011268159, now seen corresponding path program 1 times [2019-11-06 22:01:11,548 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:01:11,548 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054262631] [2019-11-06 22:01:11,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:01:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:11,795 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:01:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:11,935 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 22:01:11,935 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054262631] [2019-11-06 22:01:11,936 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:01:11,936 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:01:11,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902142014] [2019-11-06 22:01:11,937 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:01:11,937 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:01:11,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:01:11,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:01:11,938 INFO L87 Difference]: Start difference. First operand 537 states and 634 transitions. Second operand 8 states. [2019-11-06 22:01:12,924 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:13,211 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:01:13,485 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:14,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:01:14,614 INFO L93 Difference]: Finished difference Result 988 states and 1209 transitions. [2019-11-06 22:01:14,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 22:01:14,616 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2019-11-06 22:01:14,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:01:14,620 INFO L225 Difference]: With dead ends: 988 [2019-11-06 22:01:14,620 INFO L226 Difference]: Without dead ends: 593 [2019-11-06 22:01:14,622 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:01:14,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2019-11-06 22:01:14,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 537. [2019-11-06 22:01:14,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2019-11-06 22:01:14,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 633 transitions. [2019-11-06 22:01:14,742 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 633 transitions. Word has length 88 [2019-11-06 22:01:14,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:01:14,742 INFO L462 AbstractCegarLoop]: Abstraction has 537 states and 633 transitions. [2019-11-06 22:01:14,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:01:14,743 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 633 transitions. [2019-11-06 22:01:14,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-06 22:01:14,744 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:01:14,745 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:01:14,745 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:01:14,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:01:14,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1167262657, now seen corresponding path program 1 times [2019-11-06 22:01:14,746 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:01:14,746 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338436757] [2019-11-06 22:01:14,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:01:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:15,026 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:01:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:15,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:15,156 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 22:01:15,156 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338436757] [2019-11-06 22:01:15,157 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:01:15,157 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 22:01:15,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579617564] [2019-11-06 22:01:15,158 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 22:01:15,158 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:01:15,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 22:01:15,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:01:15,159 INFO L87 Difference]: Start difference. First operand 537 states and 633 transitions. Second operand 12 states. [2019-11-06 22:01:15,780 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:16,041 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:16,294 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:17,050 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:17,319 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:01:17,617 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:17,882 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:19,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:01:19,424 INFO L93 Difference]: Finished difference Result 1117 states and 1376 transitions. [2019-11-06 22:01:19,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-06 22:01:19,427 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2019-11-06 22:01:19,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:01:19,432 INFO L225 Difference]: With dead ends: 1117 [2019-11-06 22:01:19,432 INFO L226 Difference]: Without dead ends: 604 [2019-11-06 22:01:19,436 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-11-06 22:01:19,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2019-11-06 22:01:19,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 544. [2019-11-06 22:01:19,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2019-11-06 22:01:19,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 640 transitions. [2019-11-06 22:01:19,535 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 640 transitions. Word has length 88 [2019-11-06 22:01:19,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:01:19,536 INFO L462 AbstractCegarLoop]: Abstraction has 544 states and 640 transitions. [2019-11-06 22:01:19,536 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 22:01:19,536 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 640 transitions. [2019-11-06 22:01:19,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-06 22:01:19,541 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:01:19,542 INFO L410 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] [2019-11-06 22:01:19,542 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:01:19,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:01:19,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1269276973, now seen corresponding path program 1 times [2019-11-06 22:01:19,543 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:01:19,543 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925216426] [2019-11-06 22:01:19,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:01:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:19,854 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:01:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:20,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:01:20,106 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925216426] [2019-11-06 22:01:20,107 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741191744] [2019-11-06 22:01:20,107 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 22:01:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:20,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-06 22:01:20,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:01:20,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:01:20,484 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 22:01:20,484 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 17 [2019-11-06 22:01:20,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162673652] [2019-11-06 22:01:20,485 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:01:20,485 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:01:20,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:01:20,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-11-06 22:01:20,486 INFO L87 Difference]: Start difference. First operand 544 states and 640 transitions. Second operand 8 states. [2019-11-06 22:01:21,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:01:21,071 INFO L93 Difference]: Finished difference Result 1571 states and 1888 transitions. [2019-11-06 22:01:21,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 22:01:21,072 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2019-11-06 22:01:21,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:01:21,079 INFO L225 Difference]: With dead ends: 1571 [2019-11-06 22:01:21,079 INFO L226 Difference]: Without dead ends: 1051 [2019-11-06 22:01:21,081 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-11-06 22:01:21,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2019-11-06 22:01:21,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1048. [2019-11-06 22:01:21,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1048 states. [2019-11-06 22:01:21,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1236 transitions. [2019-11-06 22:01:21,275 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1236 transitions. Word has length 100 [2019-11-06 22:01:21,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:01:21,277 INFO L462 AbstractCegarLoop]: Abstraction has 1048 states and 1236 transitions. [2019-11-06 22:01:21,277 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:01:21,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1236 transitions. [2019-11-06 22:01:21,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-11-06 22:01:21,282 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:01:21,282 INFO L410 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, 1] [2019-11-06 22:01:21,506 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:01:21,506 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:01:21,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:01:21,507 INFO L82 PathProgramCache]: Analyzing trace with hash -2017960913, now seen corresponding path program 1 times [2019-11-06 22:01:21,507 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:01:21,507 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856437723] [2019-11-06 22:01:21,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:01:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:21,871 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:01:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:01:22,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:01:22,035 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856437723] [2019-11-06 22:01:22,035 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:01:22,035 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-11-06 22:01:22,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150512791] [2019-11-06 22:01:22,036 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-06 22:01:22,036 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:01:22,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-06 22:01:22,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-11-06 22:01:22,037 INFO L87 Difference]: Start difference. First operand 1048 states and 1236 transitions. Second operand 14 states. [2019-11-06 22:01:23,045 WARN L191 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:23,388 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:23,660 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:01:24,290 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:01:25,217 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:01:25,636 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:26,306 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:01:26,629 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:01:26,928 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190