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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 02:48:50,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 02:48:50,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 02:48:50,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 02:48:50,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 02:48:50,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 02:48:50,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 02:48:50,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 02:48:50,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 02:48:50,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 02:48:50,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 02:48:50,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 02:48:50,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 02:48:50,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 02:48:50,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 02:48:50,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 02:48:50,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 02:48:50,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 02:48:50,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 02:48:50,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 02:48:50,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 02:48:50,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 02:48:50,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 02:48:50,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 02:48:50,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 02:48:50,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 02:48:50,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 02:48:50,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 02:48:50,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 02:48:50,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 02:48:50,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 02:48:50,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 02:48:50,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 02:48:50,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 02:48:50,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 02:48:50,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 02:48:50,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 02:48:50,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 02:48:50,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 02:48:50,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 02:48:50,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 02:48:50,735 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 02:48:50,752 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 02:48:50,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 02:48:50,752 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 02:48:50,753 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 02:48:50,753 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 02:48:50,753 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 02:48:50,754 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 02:48:50,754 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 02:48:50,754 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 02:48:50,754 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 02:48:50,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 02:48:50,755 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 02:48:50,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 02:48:50,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 02:48:50,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 02:48:50,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 02:48:50,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 02:48:50,756 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 02:48:50,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 02:48:50,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 02:48:50,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 02:48:50,757 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 02:48:50,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 02:48:50,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 02:48:50,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 02:48:50,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 02:48:50,758 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 02:48:50,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 02:48:50,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 02:48:50,759 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 02:48:50,804 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 02:48:50,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 02:48:50,826 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 02:48:50,827 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 02:48:50,827 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 02:48:50,828 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product47.cil.c [2019-09-10 02:48:50,898 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed22c91d6/9bbdadacf4d54a1f936160b00b7b2090/FLAGe4f0cc8e1 [2019-09-10 02:48:51,491 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 02:48:51,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product47.cil.c [2019-09-10 02:48:51,506 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed22c91d6/9bbdadacf4d54a1f936160b00b7b2090/FLAGe4f0cc8e1 [2019-09-10 02:48:51,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed22c91d6/9bbdadacf4d54a1f936160b00b7b2090 [2019-09-10 02:48:51,752 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 02:48:51,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 02:48:51,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 02:48:51,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 02:48:51,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 02:48:51,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:48:51" (1/1) ... [2019-09-10 02:48:51,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e8182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:48:51, skipping insertion in model container [2019-09-10 02:48:51,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:48:51" (1/1) ... [2019-09-10 02:48:51,777 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 02:48:51,848 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 02:48:52,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:48:52,389 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 02:48:52,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:48:52,543 INFO L192 MainTranslator]: Completed translation [2019-09-10 02:48:52,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:48:52 WrapperNode [2019-09-10 02:48:52,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 02:48:52,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 02:48:52,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 02:48:52,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 02:48:52,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:48:52" (1/1) ... [2019-09-10 02:48:52,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:48:52" (1/1) ... [2019-09-10 02:48:52,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:48:52" (1/1) ... [2019-09-10 02:48:52,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:48:52" (1/1) ... [2019-09-10 02:48:52,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:48:52" (1/1) ... [2019-09-10 02:48:52,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:48:52" (1/1) ... [2019-09-10 02:48:52,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:48:52" (1/1) ... [2019-09-10 02:48:52,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 02:48:52,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 02:48:52,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 02:48:52,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 02:48:52,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:48:52" (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 [2019-09-10 02:48:52,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 02:48:52,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 02:48:52,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-10 02:48:52,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-10 02:48:52,732 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-10 02:48:52,732 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-10 02:48:52,732 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-10 02:48:52,733 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-10 02:48:52,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-10 02:48:52,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-10 02:48:52,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-10 02:48:52,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-10 02:48:52,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-10 02:48:52,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-10 02:48:52,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-09-10 02:48:52,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-09-10 02:48:52,737 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-10 02:48:52,737 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-10 02:48:52,737 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-10 02:48:52,737 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-10 02:48:52,737 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 02:48:52,738 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-10 02:48:52,738 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-10 02:48:52,738 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-10 02:48:52,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-10 02:48:52,739 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-10 02:48:52,739 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-10 02:48:52,740 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-10 02:48:52,740 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-10 02:48:52,740 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-10 02:48:52,740 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-10 02:48:52,740 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-10 02:48:52,741 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-09-10 02:48:52,741 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-10 02:48:52,741 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-10 02:48:52,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-10 02:48:52,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-10 02:48:52,741 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-10 02:48:52,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-10 02:48:52,742 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-10 02:48:52,743 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-10 02:48:52,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 02:48:52,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 02:48:52,743 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-10 02:48:52,743 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-10 02:48:52,744 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-10 02:48:52,744 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-10 02:48:52,744 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-10 02:48:52,744 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-10 02:48:52,744 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-10 02:48:52,744 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 02:48:52,745 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-10 02:48:52,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-10 02:48:52,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 02:48:52,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 02:48:52,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 02:48:52,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 02:48:52,746 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-10 02:48:52,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 02:48:52,746 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-10 02:48:52,746 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-10 02:48:52,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 02:48:52,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-10 02:48:52,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-10 02:48:52,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 02:48:52,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-10 02:48:52,748 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-10 02:48:52,748 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-10 02:48:52,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-09-10 02:48:52,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-09-10 02:48:52,748 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-10 02:48:52,748 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-10 02:48:52,748 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-10 02:48:52,749 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-10 02:48:52,749 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-10 02:48:52,750 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-10 02:48:52,750 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-10 02:48:52,750 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-10 02:48:52,750 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-10 02:48:52,751 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 02:48:52,751 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-10 02:48:52,751 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-10 02:48:52,751 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-10 02:48:52,751 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-10 02:48:52,752 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-10 02:48:52,753 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-10 02:48:52,753 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-10 02:48:52,754 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-10 02:48:52,754 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-10 02:48:52,754 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-10 02:48:52,754 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-10 02:48:52,754 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-10 02:48:52,754 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-09-10 02:48:52,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 02:48:52,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-10 02:48:52,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 02:48:53,856 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 02:48:53,857 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-10 02:48:53,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:48:53 BoogieIcfgContainer [2019-09-10 02:48:53,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 02:48:53,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 02:48:53,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 02:48:53,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 02:48:53,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 02:48:51" (1/3) ... [2019-09-10 02:48:53,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37822e10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:48:53, skipping insertion in model container [2019-09-10 02:48:53,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:48:52" (2/3) ... [2019-09-10 02:48:53,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37822e10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:48:53, skipping insertion in model container [2019-09-10 02:48:53,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:48:53" (3/3) ... [2019-09-10 02:48:53,868 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product47.cil.c [2019-09-10 02:48:53,878 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 02:48:53,888 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 02:48:53,902 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 02:48:53,929 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 02:48:53,929 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 02:48:53,930 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 02:48:53,930 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 02:48:53,930 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 02:48:53,931 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 02:48:53,931 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 02:48:53,932 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 02:48:53,962 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states. [2019-09-10 02:48:53,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-09-10 02:48:53,981 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:48:53,983 INFO L399 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] [2019-09-10 02:48:53,987 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:48:53,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:53,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1859141612, now seen corresponding path program 1 times [2019-09-10 02:48:53,998 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:48:54,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:54,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:48:54,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:54,047 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:48:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:48:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:48:54,349 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:48:54,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 02:48:54,350 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:48:54,357 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:48:54,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:48:54,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:48:54,380 INFO L87 Difference]: Start difference. First operand 184 states. Second operand 2 states. [2019-09-10 02:48:54,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:48:54,407 INFO L93 Difference]: Finished difference Result 152 states and 180 transitions. [2019-09-10 02:48:54,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:48:54,409 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 51 [2019-09-10 02:48:54,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:48:54,421 INFO L225 Difference]: With dead ends: 152 [2019-09-10 02:48:54,421 INFO L226 Difference]: Without dead ends: 141 [2019-09-10 02:48:54,423 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:48:54,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-09-10 02:48:54,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2019-09-10 02:48:54,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-09-10 02:48:54,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 168 transitions. [2019-09-10 02:48:54,474 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 168 transitions. Word has length 51 [2019-09-10 02:48:54,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:48:54,475 INFO L475 AbstractCegarLoop]: Abstraction has 141 states and 168 transitions. [2019-09-10 02:48:54,475 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:48:54,475 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 168 transitions. [2019-09-10 02:48:54,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-10 02:48:54,479 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:48:54,479 INFO L399 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] [2019-09-10 02:48:54,480 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:48:54,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:54,481 INFO L82 PathProgramCache]: Analyzing trace with hash 2121847036, now seen corresponding path program 1 times [2019-09-10 02:48:54,481 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:48:54,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:54,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:48:54,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:54,483 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:48:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:48:54,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:48:54,660 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:48:54,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 02:48:54,660 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:48:54,664 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 02:48:54,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 02:48:54,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 02:48:54,665 INFO L87 Difference]: Start difference. First operand 141 states and 168 transitions. Second operand 3 states. [2019-09-10 02:48:54,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:48:54,690 INFO L93 Difference]: Finished difference Result 132 states and 156 transitions. [2019-09-10 02:48:54,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 02:48:54,690 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-09-10 02:48:54,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:48:54,693 INFO L225 Difference]: With dead ends: 132 [2019-09-10 02:48:54,693 INFO L226 Difference]: Without dead ends: 132 [2019-09-10 02:48:54,694 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 02:48:54,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-09-10 02:48:54,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2019-09-10 02:48:54,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2019-09-10 02:48:54,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 156 transitions. [2019-09-10 02:48:54,708 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 156 transitions. Word has length 52 [2019-09-10 02:48:54,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:48:54,709 INFO L475 AbstractCegarLoop]: Abstraction has 132 states and 156 transitions. [2019-09-10 02:48:54,709 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 02:48:54,709 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 156 transitions. [2019-09-10 02:48:54,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-09-10 02:48:54,712 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:48:54,712 INFO L399 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] [2019-09-10 02:48:54,712 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:48:54,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:54,712 INFO L82 PathProgramCache]: Analyzing trace with hash 51071948, now seen corresponding path program 1 times [2019-09-10 02:48:54,713 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:48:54,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:54,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:48:54,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:54,714 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:48:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:48:54,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:48:54,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:48:54,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:48:54,855 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:48:54,856 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:48:54,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:48:54,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:48:54,857 INFO L87 Difference]: Start difference. First operand 132 states and 156 transitions. Second operand 7 states. [2019-09-10 02:48:55,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:48:55,440 INFO L93 Difference]: Finished difference Result 287 states and 348 transitions. [2019-09-10 02:48:55,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 02:48:55,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-09-10 02:48:55,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:48:55,445 INFO L225 Difference]: With dead ends: 287 [2019-09-10 02:48:55,446 INFO L226 Difference]: Without dead ends: 287 [2019-09-10 02:48:55,446 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-10 02:48:55,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2019-09-10 02:48:55,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 279. [2019-09-10 02:48:55,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2019-09-10 02:48:55,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 342 transitions. [2019-09-10 02:48:55,482 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 342 transitions. Word has length 56 [2019-09-10 02:48:55,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:48:55,482 INFO L475 AbstractCegarLoop]: Abstraction has 279 states and 342 transitions. [2019-09-10 02:48:55,483 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:48:55,483 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 342 transitions. [2019-09-10 02:48:55,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-09-10 02:48:55,486 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:48:55,487 INFO L399 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] [2019-09-10 02:48:55,487 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:48:55,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:55,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1476511447, now seen corresponding path program 1 times [2019-09-10 02:48:55,488 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:48:55,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:55,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:48:55,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:55,490 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:48:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:48:55,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:48:55,624 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:48:55,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 02:48:55,624 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:48:55,625 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 02:48:55,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 02:48:55,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 02:48:55,625 INFO L87 Difference]: Start difference. First operand 279 states and 342 transitions. Second operand 6 states. [2019-09-10 02:48:55,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:48:55,885 INFO L93 Difference]: Finished difference Result 512 states and 630 transitions. [2019-09-10 02:48:55,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 02:48:55,886 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2019-09-10 02:48:55,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:48:55,896 INFO L225 Difference]: With dead ends: 512 [2019-09-10 02:48:55,896 INFO L226 Difference]: Without dead ends: 512 [2019-09-10 02:48:55,897 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-10 02:48:55,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2019-09-10 02:48:55,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 506. [2019-09-10 02:48:55,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2019-09-10 02:48:55,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 624 transitions. [2019-09-10 02:48:55,989 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 624 transitions. Word has length 62 [2019-09-10 02:48:55,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:48:55,989 INFO L475 AbstractCegarLoop]: Abstraction has 506 states and 624 transitions. [2019-09-10 02:48:55,990 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 02:48:55,990 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 624 transitions. [2019-09-10 02:48:56,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-10 02:48:56,004 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:48:56,004 INFO L399 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] [2019-09-10 02:48:56,004 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:48:56,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:56,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1658122107, now seen corresponding path program 1 times [2019-09-10 02:48:56,005 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:48:56,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:56,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:48:56,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:56,009 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:48:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:48:56,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:48:56,157 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:48:56,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:48:56,157 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:48:56,160 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:48:56,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:48:56,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:48:56,162 INFO L87 Difference]: Start difference. First operand 506 states and 624 transitions. Second operand 7 states. [2019-09-10 02:48:56,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:48:56,909 INFO L93 Difference]: Finished difference Result 851 states and 1082 transitions. [2019-09-10 02:48:56,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-10 02:48:56,909 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2019-09-10 02:48:56,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:48:56,919 INFO L225 Difference]: With dead ends: 851 [2019-09-10 02:48:56,920 INFO L226 Difference]: Without dead ends: 851 [2019-09-10 02:48:56,920 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-10 02:48:56,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2019-09-10 02:48:56,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 755. [2019-09-10 02:48:56,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 755 states. [2019-09-10 02:48:56,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 919 transitions. [2019-09-10 02:48:56,971 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 919 transitions. Word has length 66 [2019-09-10 02:48:56,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:48:56,972 INFO L475 AbstractCegarLoop]: Abstraction has 755 states and 919 transitions. [2019-09-10 02:48:56,972 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:48:56,972 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 919 transitions. [2019-09-10 02:48:56,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-10 02:48:56,978 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:48:56,978 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:48:56,979 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:48:56,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:56,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1979078966, now seen corresponding path program 1 times [2019-09-10 02:48:56,980 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:48:56,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:56,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:48:56,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:56,981 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:48:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:48:57,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:48:57,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:48:57,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 02:48:57,121 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:48:57,121 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 02:48:57,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 02:48:57,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 02:48:57,122 INFO L87 Difference]: Start difference. First operand 755 states and 919 transitions. Second operand 4 states. [2019-09-10 02:48:57,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:48:57,434 INFO L93 Difference]: Finished difference Result 2057 states and 2629 transitions. [2019-09-10 02:48:57,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 02:48:57,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2019-09-10 02:48:57,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:48:57,453 INFO L225 Difference]: With dead ends: 2057 [2019-09-10 02:48:57,453 INFO L226 Difference]: Without dead ends: 2057 [2019-09-10 02:48:57,454 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 02:48:57,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2019-09-10 02:48:57,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 2011. [2019-09-10 02:48:57,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2011 states. [2019-09-10 02:48:57,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2011 states to 2011 states and 2537 transitions. [2019-09-10 02:48:57,556 INFO L78 Accepts]: Start accepts. Automaton has 2011 states and 2537 transitions. Word has length 103 [2019-09-10 02:48:57,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:48:57,557 INFO L475 AbstractCegarLoop]: Abstraction has 2011 states and 2537 transitions. [2019-09-10 02:48:57,557 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 02:48:57,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2011 states and 2537 transitions. [2019-09-10 02:48:57,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-10 02:48:57,568 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:48:57,569 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:48:57,569 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:48:57,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:57,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1738538837, now seen corresponding path program 1 times [2019-09-10 02:48:57,569 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:48:57,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:57,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:48:57,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:57,573 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:48:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:48:57,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:48:57,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:48:57,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 02:48:57,685 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:48:57,686 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 02:48:57,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 02:48:57,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 02:48:57,687 INFO L87 Difference]: Start difference. First operand 2011 states and 2537 transitions. Second operand 6 states. [2019-09-10 02:48:57,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:48:57,726 INFO L93 Difference]: Finished difference Result 2095 states and 2641 transitions. [2019-09-10 02:48:57,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 02:48:57,726 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2019-09-10 02:48:57,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:48:57,739 INFO L225 Difference]: With dead ends: 2095 [2019-09-10 02:48:57,739 INFO L226 Difference]: Without dead ends: 2095 [2019-09-10 02:48:57,739 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:48:57,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2019-09-10 02:48:57,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 2071. [2019-09-10 02:48:57,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2071 states. [2019-09-10 02:48:57,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2601 transitions. [2019-09-10 02:48:57,832 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2601 transitions. Word has length 103 [2019-09-10 02:48:57,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:48:57,833 INFO L475 AbstractCegarLoop]: Abstraction has 2071 states and 2601 transitions. [2019-09-10 02:48:57,833 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 02:48:57,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2601 transitions. [2019-09-10 02:48:57,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-10 02:48:57,837 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:48:57,837 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:48:57,838 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:48:57,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:57,838 INFO L82 PathProgramCache]: Analyzing trace with hash 189733865, now seen corresponding path program 1 times [2019-09-10 02:48:57,838 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:48:57,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:57,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:48:57,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:57,839 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:48:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:48:57,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:48:57,954 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:48:57,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-10 02:48:57,956 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:48:57,957 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-10 02:48:57,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-10 02:48:57,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-10 02:48:57,963 INFO L87 Difference]: Start difference. First operand 2071 states and 2601 transitions. Second operand 8 states. [2019-09-10 02:48:58,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:48:58,011 INFO L93 Difference]: Finished difference Result 1715 states and 2123 transitions. [2019-09-10 02:48:58,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 02:48:58,012 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2019-09-10 02:48:58,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:48:58,021 INFO L225 Difference]: With dead ends: 1715 [2019-09-10 02:48:58,022 INFO L226 Difference]: Without dead ends: 1715 [2019-09-10 02:48:58,022 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-10 02:48:58,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2019-09-10 02:48:58,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1715. [2019-09-10 02:48:58,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1715 states. [2019-09-10 02:48:58,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2123 transitions. [2019-09-10 02:48:58,092 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2123 transitions. Word has length 103 [2019-09-10 02:48:58,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:48:58,092 INFO L475 AbstractCegarLoop]: Abstraction has 1715 states and 2123 transitions. [2019-09-10 02:48:58,092 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-10 02:48:58,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2123 transitions. [2019-09-10 02:48:58,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-10 02:48:58,097 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:48:58,097 INFO L399 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, 1, 1, 1] [2019-09-10 02:48:58,098 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:48:58,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:58,098 INFO L82 PathProgramCache]: Analyzing trace with hash -237992882, now seen corresponding path program 1 times [2019-09-10 02:48:58,098 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:48:58,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:58,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:48:58,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:48:58,099 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:48:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:48:58,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-10 02:48:58,275 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:48:58,275 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 02:48:58,276 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 108 with the following transitions: [2019-09-10 02:48:58,281 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [92], [108], [112], [113], [114], [129], [132], [134], [143], [147], [151], [154], [159], [162], [167], [170], [186], [188], [191], [193], [196], [199], [211], [212], [222], [224], [229], [232], [235], [237], [242], [244], [245], [246], [247], [253], [257], [299], [303], [304], [307], [308], [311], [313], [316], [326], [327], [328], [352], [354], [355], [373], [374], [424], [425], [432], [434], [435], [443], [444], [445], [446], [447], [448], [449], [450], [451], [491], [492], [493], [494], [495], [496], [499], [503], [504], [505], [506], [507], [509], [510], [511], [512], [513], [514], [517], [518], [519], [525], [526], [527], [528], [535], [536], [537], [539], [540], [545], [546], [547] [2019-09-10 02:48:58,323 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:48:58,323 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:48:58,402 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 02:48:58,404 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 69 root evaluator evaluations with a maximum evaluation depth of 0. Performed 69 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-09-10 02:48:58,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:48:58,409 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 02:48:58,455 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-10 02:48:58,455 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 02:48:58,459 INFO L420 sIntCurrentIteration]: We unified 106 AI predicates to 106 [2019-09-10 02:48:58,460 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 02:48:58,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 02:48:58,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 13 [2019-09-10 02:48:58,461 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:48:58,462 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:48:58,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:48:58,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:48:58,462 INFO L87 Difference]: Start difference. First operand 1715 states and 2123 transitions. Second operand 2 states. [2019-09-10 02:48:58,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:48:58,463 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-10 02:48:58,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:48:58,463 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 107 [2019-09-10 02:48:58,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:48:58,464 INFO L225 Difference]: With dead ends: 2 [2019-09-10 02:48:58,464 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 02:48:58,464 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:48:58,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 02:48:58,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 02:48:58,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 02:48:58,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 02:48:58,465 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 107 [2019-09-10 02:48:58,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:48:58,466 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 02:48:58,466 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:48:58,466 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 02:48:58,466 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 02:48:58,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 02:48:58 BoogieIcfgContainer [2019-09-10 02:48:58,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 02:48:58,474 INFO L168 Benchmark]: Toolchain (without parser) took 6719.45 ms. Allocated memory was 134.2 MB in the beginning and 308.3 MB in the end (delta: 174.1 MB). Free memory was 89.8 MB in the beginning and 113.1 MB in the end (delta: -23.3 MB). Peak memory consumption was 150.8 MB. Max. memory is 7.1 GB. [2019-09-10 02:48:58,475 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 134.2 MB. Free memory was 108.7 MB in the beginning and 108.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 02:48:58,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 787.15 ms. Allocated memory was 134.2 MB in the beginning and 199.8 MB in the end (delta: 65.5 MB). Free memory was 89.6 MB in the beginning and 164.1 MB in the end (delta: -74.5 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2019-09-10 02:48:58,477 INFO L168 Benchmark]: Boogie Preprocessor took 108.79 ms. Allocated memory is still 199.8 MB. Free memory was 164.1 MB in the beginning and 159.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2019-09-10 02:48:58,478 INFO L168 Benchmark]: RCFGBuilder took 1202.63 ms. Allocated memory was 199.8 MB in the beginning and 227.5 MB in the end (delta: 27.8 MB). Free memory was 159.3 MB in the beginning and 190.2 MB in the end (delta: -30.8 MB). Peak memory consumption was 85.0 MB. Max. memory is 7.1 GB. [2019-09-10 02:48:58,479 INFO L168 Benchmark]: TraceAbstraction took 4611.86 ms. Allocated memory was 227.5 MB in the beginning and 308.3 MB in the end (delta: 80.7 MB). Free memory was 190.2 MB in the beginning and 113.1 MB in the end (delta: 77.1 MB). Peak memory consumption was 157.8 MB. Max. memory is 7.1 GB. [2019-09-10 02:48:58,483 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 134.2 MB. Free memory was 108.7 MB in the beginning and 108.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 787.15 ms. Allocated memory was 134.2 MB in the beginning and 199.8 MB in the end (delta: 65.5 MB). Free memory was 89.6 MB in the beginning and 164.1 MB in the end (delta: -74.5 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.79 ms. Allocated memory is still 199.8 MB. Free memory was 164.1 MB in the beginning and 159.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1202.63 ms. Allocated memory was 199.8 MB in the beginning and 227.5 MB in the end (delta: 27.8 MB). Free memory was 159.3 MB in the beginning and 190.2 MB in the end (delta: -30.8 MB). Peak memory consumption was 85.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4611.86 ms. Allocated memory was 227.5 MB in the beginning and 308.3 MB in the end (delta: 80.7 MB). Free memory was 190.2 MB in the beginning and 113.1 MB in the end (delta: 77.1 MB). Peak memory consumption was 157.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 243 locations, 1 error locations. SAFE Result, 4.5s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1443 SDtfs, 884 SDslu, 3339 SDs, 0 SdLazy, 934 SolverSat, 182 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 180 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2071occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 1.0377358490566038 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 180 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 703 NumberOfCodeBlocks, 703 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 694 ConstructedInterpolants, 0 QuantifiedInterpolants, 90774 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 10/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...