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_spec5_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:31:29,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:31:29,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:31:29,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:31:29,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:31:29,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:31:29,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:31:29,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:31:29,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:31:29,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:31:29,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:31:29,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:31:29,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:31:29,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:31:29,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:31:29,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:31:29,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:31:29,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:31:29,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:31:29,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:31:29,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:31:29,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:31:29,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:31:29,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:31:29,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:31:29,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:31:29,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:31:29,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:31:29,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:31:29,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:31:29,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:31:29,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:31:29,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:31:29,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:31:29,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:31:29,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:31:29,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:31:29,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:31:29,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:31:29,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:31:29,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:31:29,658 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 [2019-09-20 13:31:29,674 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:31:29,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:31:29,675 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:31:29,675 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:31:29,676 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:31:29,676 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:31:29,676 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:31:29,677 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:31:29,677 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:31:29,677 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:31:29,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:31:29,678 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:31:29,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:31:29,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:31:29,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:31:29,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:31:29,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:31:29,679 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:31:29,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:31:29,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:31:29,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:31:29,680 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:31:29,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:31:29,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:31:29,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:31:29,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:31:29,681 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:31:29,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:31:29,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:31:29,682 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:31:29,710 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:31:29,723 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:31:29,727 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:31:29,728 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:31:29,729 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:31:29,729 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2019-09-20 13:31:29,801 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/118f0080a/3d4993c55f934a0a88c975d4c0b95825/FLAG149e983b7 [2019-09-20 13:31:30,404 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:31:30,405 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2019-09-20 13:31:30,420 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/118f0080a/3d4993c55f934a0a88c975d4c0b95825/FLAG149e983b7 [2019-09-20 13:31:30,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/118f0080a/3d4993c55f934a0a88c975d4c0b95825 [2019-09-20 13:31:30,671 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:31:30,673 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:31:30,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:30,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:31:30,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:31:30,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:30" (1/1) ... [2019-09-20 13:31:30,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4adaa9f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:30, skipping insertion in model container [2019-09-20 13:31:30,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:30" (1/1) ... [2019-09-20 13:31:30,694 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:31:30,759 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:31:31,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:31,248 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:31:31,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:31,407 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:31:31,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31 WrapperNode [2019-09-20 13:31:31,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:31,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:31:31,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:31:31,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:31:31,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (1/1) ... [2019-09-20 13:31:31,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (1/1) ... [2019-09-20 13:31:31,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (1/1) ... [2019-09-20 13:31:31,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (1/1) ... [2019-09-20 13:31:31,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (1/1) ... [2019-09-20 13:31:31,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (1/1) ... [2019-09-20 13:31:31,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (1/1) ... [2019-09-20 13:31:31,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:31:31,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:31:31,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:31:31,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:31:31,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (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 [2019-09-20 13:31:31,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:31:31,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:31:31,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:31,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:31,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:31,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:31,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:31:31,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:31:31,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:31:31,572 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:31:31,572 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:31:31,572 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:31:31,573 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:31:31,573 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:31:31,573 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:31:31,573 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:31:31,573 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:31:31,574 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:31:31,574 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-09-20 13:31:31,574 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:31:31,574 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:31:31,574 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:31:31,574 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:31:31,575 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:31:31,575 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:31:31,575 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:31:31,575 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:31:31,575 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:31:31,575 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:31:31,576 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:31:31,576 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:31:31,576 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:31:31,576 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:31:31,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:31,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:31,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:31,577 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:31:31,577 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:31:31,577 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:31:31,577 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:31:31,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:31:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:31:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:31:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:31:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:31:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:31:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:31:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:31:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:31:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:31:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:31:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:31:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:31:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:31:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:31:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:31:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:31:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:31:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:31:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:31:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:31:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:31:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:31:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:31:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:31:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:31:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:31:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:31:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:31:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:31:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:31:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:31:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:31:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:31:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:31:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:31:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:31:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:31:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:31:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:31:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:31:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-09-20 13:31:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:31:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:31:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:31:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:31:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:31:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:31:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:31:32,654 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:31:32,655 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:31:32,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:32 BoogieIcfgContainer [2019-09-20 13:31:32,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:31:32,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:31:32,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:31:32,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:31:32,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:31:30" (1/3) ... [2019-09-20 13:31:32,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f810c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:32, skipping insertion in model container [2019-09-20 13:31:32,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:31" (2/3) ... [2019-09-20 13:31:32,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f810c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:32, skipping insertion in model container [2019-09-20 13:31:32,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:32" (3/3) ... [2019-09-20 13:31:32,667 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product43.cil.c [2019-09-20 13:31:32,694 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:31:32,706 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:31:32,724 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:31:32,764 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:31:32,764 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:31:32,764 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:31:32,765 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:31:32,765 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:31:32,766 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:31:32,766 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:31:32,766 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:31:32,786 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2019-09-20 13:31:32,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:31:32,798 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:32,799 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:32,801 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:32,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:32,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1951083148, now seen corresponding path program 1 times [2019-09-20 13:31:32,810 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:32,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:32,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:32,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:32,872 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:33,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:33,205 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:33,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:31:33,207 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:33,214 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:33,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:33,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:33,243 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 2 states. [2019-09-20 13:31:33,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:33,296 INFO L93 Difference]: Finished difference Result 150 states and 173 transitions. [2019-09-20 13:31:33,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:33,305 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:31:33,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:33,325 INFO L225 Difference]: With dead ends: 150 [2019-09-20 13:31:33,325 INFO L226 Difference]: Without dead ends: 139 [2019-09-20 13:31:33,330 INFO L636 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 [2019-09-20 13:31:33,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-09-20 13:31:33,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2019-09-20 13:31:33,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-09-20 13:31:33,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 161 transitions. [2019-09-20 13:31:33,420 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 161 transitions. Word has length 59 [2019-09-20 13:31:33,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:33,421 INFO L475 AbstractCegarLoop]: Abstraction has 139 states and 161 transitions. [2019-09-20 13:31:33,422 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:33,422 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 161 transitions. [2019-09-20 13:31:33,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:31:33,433 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:33,433 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:33,434 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:33,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:33,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1220523940, now seen corresponding path program 1 times [2019-09-20 13:31:33,435 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:33,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:33,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:33,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:33,439 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:33,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:33,622 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:33,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:31:33,623 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:33,625 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:31:33,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:31:33,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:31:33,627 INFO L87 Difference]: Start difference. First operand 139 states and 161 transitions. Second operand 3 states. [2019-09-20 13:31:33,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:33,654 INFO L93 Difference]: Finished difference Result 130 states and 149 transitions. [2019-09-20 13:31:33,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:31:33,656 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:31:33,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:33,658 INFO L225 Difference]: With dead ends: 130 [2019-09-20 13:31:33,658 INFO L226 Difference]: Without dead ends: 130 [2019-09-20 13:31:33,659 INFO L636 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 [2019-09-20 13:31:33,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-09-20 13:31:33,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2019-09-20 13:31:33,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-09-20 13:31:33,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2019-09-20 13:31:33,669 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 60 [2019-09-20 13:31:33,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:33,670 INFO L475 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2019-09-20 13:31:33,670 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:31:33,670 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2019-09-20 13:31:33,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-20 13:31:33,672 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:33,672 INFO L407 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] [2019-09-20 13:31:33,672 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:33,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:33,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1125066517, now seen corresponding path program 1 times [2019-09-20 13:31:33,673 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:33,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:33,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:33,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:33,676 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:33,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:33,808 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:33,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:33,808 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:33,809 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:33,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:33,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:33,811 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand 7 states. [2019-09-20 13:31:34,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:34,317 INFO L93 Difference]: Finished difference Result 288 states and 340 transitions. [2019-09-20 13:31:34,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:31:34,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2019-09-20 13:31:34,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:34,328 INFO L225 Difference]: With dead ends: 288 [2019-09-20 13:31:34,329 INFO L226 Difference]: Without dead ends: 288 [2019-09-20 13:31:34,329 INFO L636 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 [2019-09-20 13:31:34,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2019-09-20 13:31:34,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 268. [2019-09-20 13:31:34,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2019-09-20 13:31:34,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 318 transitions. [2019-09-20 13:31:34,363 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 318 transitions. Word has length 64 [2019-09-20 13:31:34,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:34,364 INFO L475 AbstractCegarLoop]: Abstraction has 268 states and 318 transitions. [2019-09-20 13:31:34,364 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:34,364 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 318 transitions. [2019-09-20 13:31:34,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-20 13:31:34,367 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:34,368 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:34,368 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:34,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:34,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1836372268, now seen corresponding path program 1 times [2019-09-20 13:31:34,369 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:34,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:34,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:34,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:34,373 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:34,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:31:34,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:34,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:34,564 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:34,564 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:34,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:34,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:34,565 INFO L87 Difference]: Start difference. First operand 268 states and 318 transitions. Second operand 7 states. [2019-09-20 13:31:35,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:35,354 INFO L93 Difference]: Finished difference Result 429 states and 529 transitions. [2019-09-20 13:31:35,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:31:35,355 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-20 13:31:35,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:35,359 INFO L225 Difference]: With dead ends: 429 [2019-09-20 13:31:35,359 INFO L226 Difference]: Without dead ends: 429 [2019-09-20 13:31:35,360 INFO L636 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 [2019-09-20 13:31:35,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2019-09-20 13:31:35,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 382. [2019-09-20 13:31:35,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2019-09-20 13:31:35,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 454 transitions. [2019-09-20 13:31:35,415 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 454 transitions. Word has length 70 [2019-09-20 13:31:35,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:35,416 INFO L475 AbstractCegarLoop]: Abstraction has 382 states and 454 transitions. [2019-09-20 13:31:35,416 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:35,416 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 454 transitions. [2019-09-20 13:31:35,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-20 13:31:35,419 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:35,419 INFO L407 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] [2019-09-20 13:31:35,419 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:35,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:35,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1329110427, now seen corresponding path program 1 times [2019-09-20 13:31:35,420 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:35,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:35,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:35,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:35,424 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:35,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:35,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:31:35,528 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:35,528 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:31:35,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:31:35,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:31:35,529 INFO L87 Difference]: Start difference. First operand 382 states and 454 transitions. Second operand 4 states. [2019-09-20 13:31:35,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:35,865 INFO L93 Difference]: Finished difference Result 1052 states and 1308 transitions. [2019-09-20 13:31:35,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:31:35,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2019-09-20 13:31:35,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:35,878 INFO L225 Difference]: With dead ends: 1052 [2019-09-20 13:31:35,878 INFO L226 Difference]: Without dead ends: 1052 [2019-09-20 13:31:35,878 INFO L636 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 [2019-09-20 13:31:35,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2019-09-20 13:31:35,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1032. [2019-09-20 13:31:35,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2019-09-20 13:31:35,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1269 transitions. [2019-09-20 13:31:35,947 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1269 transitions. Word has length 102 [2019-09-20 13:31:35,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:35,950 INFO L475 AbstractCegarLoop]: Abstraction has 1032 states and 1269 transitions. [2019-09-20 13:31:35,950 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:31:35,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1269 transitions. [2019-09-20 13:31:35,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-20 13:31:35,958 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:35,958 INFO L407 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] [2019-09-20 13:31:35,958 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:35,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:35,959 INFO L82 PathProgramCache]: Analyzing trace with hash 359529404, now seen corresponding path program 1 times [2019-09-20 13:31:35,959 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:35,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:35,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:35,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:35,962 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:36,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:36,079 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:36,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:31:36,080 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:36,080 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:31:36,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:31:36,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:31:36,081 INFO L87 Difference]: Start difference. First operand 1032 states and 1269 transitions. Second operand 6 states. [2019-09-20 13:31:36,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:36,130 INFO L93 Difference]: Finished difference Result 1074 states and 1321 transitions. [2019-09-20 13:31:36,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:31:36,131 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2019-09-20 13:31:36,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:36,139 INFO L225 Difference]: With dead ends: 1074 [2019-09-20 13:31:36,139 INFO L226 Difference]: Without dead ends: 1074 [2019-09-20 13:31:36,140 INFO L636 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 [2019-09-20 13:31:36,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2019-09-20 13:31:36,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1062. [2019-09-20 13:31:36,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1062 states. [2019-09-20 13:31:36,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1301 transitions. [2019-09-20 13:31:36,187 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1301 transitions. Word has length 102 [2019-09-20 13:31:36,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:36,188 INFO L475 AbstractCegarLoop]: Abstraction has 1062 states and 1301 transitions. [2019-09-20 13:31:36,188 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:31:36,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1301 transitions. [2019-09-20 13:31:36,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-20 13:31:36,191 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:36,191 INFO L407 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] [2019-09-20 13:31:36,192 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:36,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:36,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1689858438, now seen corresponding path program 1 times [2019-09-20 13:31:36,192 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:36,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:36,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:36,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:36,195 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:36,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:36,291 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:36,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:31:36,291 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:36,292 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:31:36,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:31:36,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:31:36,292 INFO L87 Difference]: Start difference. First operand 1062 states and 1301 transitions. Second operand 8 states. [2019-09-20 13:31:36,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:36,325 INFO L93 Difference]: Finished difference Result 863 states and 1044 transitions. [2019-09-20 13:31:36,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:31:36,326 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 102 [2019-09-20 13:31:36,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:36,330 INFO L225 Difference]: With dead ends: 863 [2019-09-20 13:31:36,331 INFO L226 Difference]: Without dead ends: 863 [2019-09-20 13:31:36,331 INFO L636 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 [2019-09-20 13:31:36,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2019-09-20 13:31:36,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 863. [2019-09-20 13:31:36,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2019-09-20 13:31:36,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1044 transitions. [2019-09-20 13:31:36,363 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1044 transitions. Word has length 102 [2019-09-20 13:31:36,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:36,364 INFO L475 AbstractCegarLoop]: Abstraction has 863 states and 1044 transitions. [2019-09-20 13:31:36,364 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:31:36,364 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1044 transitions. [2019-09-20 13:31:36,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-20 13:31:36,366 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:36,366 INFO L407 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] [2019-09-20 13:31:36,367 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:36,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:36,367 INFO L82 PathProgramCache]: Analyzing trace with hash -764679949, now seen corresponding path program 1 times [2019-09-20 13:31:36,367 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:36,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:36,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:36,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:36,370 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:36,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:36,589 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:36,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:31:36,591 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:36,592 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:31:36,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:31:36,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:31:36,594 INFO L87 Difference]: Start difference. First operand 863 states and 1044 transitions. Second operand 9 states. [2019-09-20 13:31:37,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:37,732 INFO L93 Difference]: Finished difference Result 1711 states and 2072 transitions. [2019-09-20 13:31:37,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:31:37,733 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2019-09-20 13:31:37,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:37,746 INFO L225 Difference]: With dead ends: 1711 [2019-09-20 13:31:37,747 INFO L226 Difference]: Without dead ends: 1711 [2019-09-20 13:31:37,747 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:31:37,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2019-09-20 13:31:37,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1516. [2019-09-20 13:31:37,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1516 states. [2019-09-20 13:31:37,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 1816 transitions. [2019-09-20 13:31:37,867 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 1816 transitions. Word has length 106 [2019-09-20 13:31:37,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:37,869 INFO L475 AbstractCegarLoop]: Abstraction has 1516 states and 1816 transitions. [2019-09-20 13:31:37,869 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:31:37,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 1816 transitions. [2019-09-20 13:31:37,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-09-20 13:31:37,875 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:37,876 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:37,876 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:37,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:37,877 INFO L82 PathProgramCache]: Analyzing trace with hash -60868023, now seen corresponding path program 1 times [2019-09-20 13:31:37,877 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:37,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:37,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:37,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:37,882 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:38,074 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-20 13:31:38,075 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:31:38,075 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:31:38,077 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 150 with the following transitions: [2019-09-20 13:31:38,080 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [92], [108], [112], [113], [114], [117], [119], [122], [129], [132], [133], [134], [143], [147], [151], [154], [157], [159], [165], [167], [170], [195], [197], [202], [205], [206], [208], [213], [215], [216], [217], [218], [222], [225], [229], [235], [262], [263], [266], [270], [273], [277], [278], [281], [282], [283], [285], [286], [287], [289], [292], [294], [297], [300], [309], [311], [312], [313], [337], [339], [340], [358], [359], [409], [410], [420], [428], [429], [430], [431], [432], [433], [434], [435], [436], [470], [471], [472], [473], [476], [477], [478], [479], [484], [485], [488], [489], [490], [491], [492], [493], [494], [495], [496], [497], [498], [499], [500], [501], [506], [507], [508], [509], [510], [511], [512], [516], [517], [518], [520], [521], [526], [527], [528] [2019-09-20 13:31:38,135 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:31:38,136 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:31:38,227 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:31:38,229 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. [2019-09-20 13:31:38,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:38,234 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:31:38,292 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:31:38,292 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:31:38,297 INFO L420 sIntCurrentIteration]: We unified 148 AI predicates to 148 [2019-09-20 13:31:38,301 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:31:38,302 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:31:38,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-20 13:31:38,302 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:38,303 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:38,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:38,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:38,303 INFO L87 Difference]: Start difference. First operand 1516 states and 1816 transitions. Second operand 2 states. [2019-09-20 13:31:38,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:38,304 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:31:38,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:38,304 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 149 [2019-09-20 13:31:38,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:38,305 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:31:38,305 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:31:38,305 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:38,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:31:38,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:31:38,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:31:38,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:31:38,306 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 149 [2019-09-20 13:31:38,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:38,307 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:31:38,307 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:38,307 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:31:38,307 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:31:38,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:31:38 BoogieIcfgContainer [2019-09-20 13:31:38,312 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:31:38,315 INFO L168 Benchmark]: Toolchain (without parser) took 7641.77 ms. Allocated memory was 136.8 MB in the beginning and 347.6 MB in the end (delta: 210.8 MB). Free memory was 83.1 MB in the beginning and 93.7 MB in the end (delta: -10.6 MB). Peak memory consumption was 200.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:38,316 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 136.8 MB. Free memory was 102.8 MB in the beginning and 102.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:31:38,317 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.99 ms. Allocated memory was 136.8 MB in the beginning and 197.7 MB in the end (delta: 60.8 MB). Free memory was 82.9 MB in the beginning and 162.6 MB in the end (delta: -79.7 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:38,318 INFO L168 Benchmark]: Boogie Preprocessor took 96.27 ms. Allocated memory is still 197.7 MB. Free memory was 162.6 MB in the beginning and 158.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:38,319 INFO L168 Benchmark]: RCFGBuilder took 1151.92 ms. Allocated memory is still 197.7 MB. Free memory was 158.7 MB in the beginning and 70.8 MB in the end (delta: 87.9 MB). Peak memory consumption was 87.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:38,320 INFO L168 Benchmark]: TraceAbstraction took 5654.14 ms. Allocated memory was 197.7 MB in the beginning and 347.6 MB in the end (delta: 149.9 MB). Free memory was 70.2 MB in the beginning and 93.7 MB in the end (delta: -23.5 MB). Peak memory consumption was 126.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:38,324 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 136.8 MB. Free memory was 102.8 MB in the beginning and 102.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 733.99 ms. Allocated memory was 136.8 MB in the beginning and 197.7 MB in the end (delta: 60.8 MB). Free memory was 82.9 MB in the beginning and 162.6 MB in the end (delta: -79.7 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.27 ms. Allocated memory is still 197.7 MB. Free memory was 162.6 MB in the beginning and 158.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1151.92 ms. Allocated memory is still 197.7 MB. Free memory was 158.7 MB in the beginning and 70.8 MB in the end (delta: 87.9 MB). Peak memory consumption was 87.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5654.14 ms. Allocated memory was 197.7 MB in the beginning and 347.6 MB in the end (delta: 149.9 MB). Free memory was 70.2 MB in the beginning and 93.7 MB in the end (delta: -23.5 MB). Peak memory consumption was 126.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 961]: 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, 238 locations, 1 error locations. SAFE Result, 5.5s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 3.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1431 SDtfs, 1062 SDslu, 3185 SDs, 0 SdLazy, 1555 SolverSat, 301 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 235 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1516occurred in iteration=8, 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, 0.8581081081081081 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 294 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 814 NumberOfCodeBlocks, 814 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 805 ConstructedInterpolants, 0 QuantifiedInterpolants, 127284 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 57/62 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...