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_spec3_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:08:42,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:08:42,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:08:42,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:08:42,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:08:42,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:08:42,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:08:42,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:08:42,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:08:42,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:08:42,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:08:42,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:08:42,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:08:42,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:08:42,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:08:42,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:08:42,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:08:42,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:08:42,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:08:42,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:08:42,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:08:42,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:08:42,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:08:42,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:08:42,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:08:42,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:08:42,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:08:42,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:08:42,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:08:42,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:08:42,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:08:42,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:08:42,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:08:42,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:08:42,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:08:42,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:08:42,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:08:42,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:08:42,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:08:42,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:08:42,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:08:42,597 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 [2019-09-16 17:08:42,613 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:08:42,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:08:42,614 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:08:42,614 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:08:42,615 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:08:42,615 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:08:42,615 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:08:42,615 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:08:42,616 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:08:42,616 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:08:42,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:08:42,617 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:08:42,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:08:42,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:08:42,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:08:42,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:08:42,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:08:42,618 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:08:42,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:08:42,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:08:42,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:08:42,619 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:08:42,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:08:42,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:08:42,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:08:42,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:08:42,620 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:08:42,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:08:42,620 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:08:42,620 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:08:42,649 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:08:42,662 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:08:42,666 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:08:42,667 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:08:42,668 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:08:42,668 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2019-09-16 17:08:42,732 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d02306b46/9d4ebb4b4d0a4ac8a85ffe821850a44c/FLAGfd697b479 [2019-09-16 17:08:43,289 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:08:43,290 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2019-09-16 17:08:43,309 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d02306b46/9d4ebb4b4d0a4ac8a85ffe821850a44c/FLAGfd697b479 [2019-09-16 17:08:43,573 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d02306b46/9d4ebb4b4d0a4ac8a85ffe821850a44c [2019-09-16 17:08:43,583 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:08:43,584 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:08:43,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:08:43,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:08:43,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:08:43,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:08:43" (1/1) ... [2019-09-16 17:08:43,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@344f0ed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:43, skipping insertion in model container [2019-09-16 17:08:43,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:08:43" (1/1) ... [2019-09-16 17:08:43,604 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:08:43,676 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:08:44,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:08:44,159 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:08:44,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:08:44,360 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:08:44,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:44 WrapperNode [2019-09-16 17:08:44,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:08:44,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:08:44,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:08:44,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:08:44,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:44" (1/1) ... [2019-09-16 17:08:44,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:44" (1/1) ... [2019-09-16 17:08:44,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:44" (1/1) ... [2019-09-16 17:08:44,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:44" (1/1) ... [2019-09-16 17:08:44,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:44" (1/1) ... [2019-09-16 17:08:44,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:44" (1/1) ... [2019-09-16 17:08:44,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:44" (1/1) ... [2019-09-16 17:08:44,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:08:44,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:08:44,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:08:44,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:08:44,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:44" (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 [2019-09-16 17:08:44,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:08:44,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:08:44,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-16 17:08:44,534 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-16 17:08:44,534 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-16 17:08:44,535 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-16 17:08:44,535 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-16 17:08:44,535 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:08:44,535 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-16 17:08:44,535 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-16 17:08:44,535 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-16 17:08:44,536 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-16 17:08:44,536 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-09-16 17:08:44,537 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-16 17:08:44,537 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-16 17:08:44,538 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-16 17:08:44,538 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-16 17:08:44,538 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-16 17:08:44,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-16 17:08:44,539 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-16 17:08:44,539 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-16 17:08:44,539 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-16 17:08:44,539 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-16 17:08:44,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-16 17:08:44,540 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-16 17:08:44,540 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-16 17:08:44,541 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-16 17:08:44,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-16 17:08:44,541 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-16 17:08:44,541 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-16 17:08:44,541 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-16 17:08:44,541 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-16 17:08:44,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-16 17:08:44,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-16 17:08:44,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-16 17:08:44,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-16 17:08:44,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-16 17:08:44,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-16 17:08:44,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-09-16 17:08:44,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:08:44,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:08:44,543 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-16 17:08:44,544 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-16 17:08:44,544 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-16 17:08:44,544 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-16 17:08:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-16 17:08:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-16 17:08:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-16 17:08:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-16 17:08:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-16 17:08:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-16 17:08:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-16 17:08:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-16 17:08:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-16 17:08:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:08:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-16 17:08:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-16 17:08:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-16 17:08:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-16 17:08:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-16 17:08:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-16 17:08:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-16 17:08:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-16 17:08:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-09-16 17:08:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-16 17:08:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-16 17:08:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-16 17:08:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-09-16 17:08:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-16 17:08:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:08:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-16 17:08:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-16 17:08:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-16 17:08:44,550 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-16 17:08:44,550 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:08:44,550 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:08:44,551 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-16 17:08:44,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:08:44,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:08:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:08:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:08:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-16 17:08:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:08:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-16 17:08:44,553 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-16 17:08:44,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:08:44,554 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-16 17:08:44,554 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-16 17:08:44,555 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-16 17:08:44,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:08:44,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 17:08:44,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:08:45,691 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:08:45,691 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-16 17:08:45,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:08:45 BoogieIcfgContainer [2019-09-16 17:08:45,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:08:45,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:08:45,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:08:45,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:08:45,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:08:43" (1/3) ... [2019-09-16 17:08:45,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138904d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:08:45, skipping insertion in model container [2019-09-16 17:08:45,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:08:44" (2/3) ... [2019-09-16 17:08:45,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138904d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:08:45, skipping insertion in model container [2019-09-16 17:08:45,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:08:45" (3/3) ... [2019-09-16 17:08:45,701 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product42.cil.c [2019-09-16 17:08:45,711 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:08:45,721 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:08:45,738 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:08:45,766 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:08:45,767 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:08:45,767 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:08:45,767 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:08:45,767 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:08:45,768 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:08:45,768 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:08:45,768 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:08:45,788 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2019-09-16 17:08:45,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-16 17:08:45,802 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:45,803 INFO L407 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] [2019-09-16 17:08:45,806 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:45,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:45,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1349332709, now seen corresponding path program 1 times [2019-09-16 17:08:45,815 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:45,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:45,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:45,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:45,873 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:46,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:46,198 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:46,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:08:46,199 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:46,205 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:08:46,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:08:46,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:08:46,224 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 2 states. [2019-09-16 17:08:46,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:46,253 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2019-09-16 17:08:46,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:08:46,254 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-09-16 17:08:46,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:46,267 INFO L225 Difference]: With dead ends: 138 [2019-09-16 17:08:46,268 INFO L226 Difference]: Without dead ends: 127 [2019-09-16 17:08:46,270 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 [2019-09-16 17:08:46,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-09-16 17:08:46,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2019-09-16 17:08:46,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-09-16 17:08:46,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2019-09-16 17:08:46,325 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 52 [2019-09-16 17:08:46,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:46,326 INFO L475 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2019-09-16 17:08:46,326 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:08:46,326 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2019-09-16 17:08:46,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-09-16 17:08:46,330 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:46,330 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:46,331 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:46,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:46,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1093164693, now seen corresponding path program 1 times [2019-09-16 17:08:46,331 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:46,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:46,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:46,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:46,334 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:46,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:46,437 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:46,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:08:46,438 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:46,441 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:08:46,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:08:46,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:08:46,443 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand 3 states. [2019-09-16 17:08:46,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:46,470 INFO L93 Difference]: Finished difference Result 118 states and 136 transitions. [2019-09-16 17:08:46,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:08:46,471 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-09-16 17:08:46,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:46,475 INFO L225 Difference]: With dead ends: 118 [2019-09-16 17:08:46,476 INFO L226 Difference]: Without dead ends: 118 [2019-09-16 17:08:46,477 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 [2019-09-16 17:08:46,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-09-16 17:08:46,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2019-09-16 17:08:46,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2019-09-16 17:08:46,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2019-09-16 17:08:46,504 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 53 [2019-09-16 17:08:46,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:46,504 INFO L475 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2019-09-16 17:08:46,504 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:08:46,505 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2019-09-16 17:08:46,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-09-16 17:08:46,511 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:46,511 INFO L407 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] [2019-09-16 17:08:46,511 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:46,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:46,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1756790423, now seen corresponding path program 1 times [2019-09-16 17:08:46,512 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:46,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:46,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:46,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:46,515 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:46,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:46,682 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:46,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:08:46,683 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:46,683 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:08:46,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:08:46,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:08:46,684 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 7 states. [2019-09-16 17:08:47,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:47,071 INFO L93 Difference]: Finished difference Result 118 states and 135 transitions. [2019-09-16 17:08:47,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:08:47,072 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2019-09-16 17:08:47,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:47,074 INFO L225 Difference]: With dead ends: 118 [2019-09-16 17:08:47,075 INFO L226 Difference]: Without dead ends: 118 [2019-09-16 17:08:47,076 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 [2019-09-16 17:08:47,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-09-16 17:08:47,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2019-09-16 17:08:47,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2019-09-16 17:08:47,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2019-09-16 17:08:47,096 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 58 [2019-09-16 17:08:47,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:47,096 INFO L475 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2019-09-16 17:08:47,096 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:08:47,096 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2019-09-16 17:08:47,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-16 17:08:47,098 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:47,098 INFO L407 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] [2019-09-16 17:08:47,099 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:47,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:47,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1312872772, now seen corresponding path program 1 times [2019-09-16 17:08:47,099 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:47,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:47,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:47,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:47,103 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:47,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:47,228 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:47,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 17:08:47,228 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:47,229 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 17:08:47,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 17:08:47,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 17:08:47,230 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand 5 states. [2019-09-16 17:08:47,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:47,800 INFO L93 Difference]: Finished difference Result 220 states and 256 transitions. [2019-09-16 17:08:47,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:08:47,801 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2019-09-16 17:08:47,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:47,808 INFO L225 Difference]: With dead ends: 220 [2019-09-16 17:08:47,809 INFO L226 Difference]: Without dead ends: 220 [2019-09-16 17:08:47,809 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:08:47,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2019-09-16 17:08:47,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 201. [2019-09-16 17:08:47,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2019-09-16 17:08:47,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2019-09-16 17:08:47,840 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 66 [2019-09-16 17:08:47,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:47,841 INFO L475 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2019-09-16 17:08:47,842 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 17:08:47,842 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2019-09-16 17:08:47,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-16 17:08:47,844 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:47,844 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:47,847 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:47,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:47,848 INFO L82 PathProgramCache]: Analyzing trace with hash 362669874, now seen corresponding path program 1 times [2019-09-16 17:08:47,848 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:47,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:47,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:47,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:47,854 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:47,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:47,964 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:47,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:08:47,964 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:47,964 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:08:47,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:08:47,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:08:47,965 INFO L87 Difference]: Start difference. First operand 201 states and 230 transitions. Second operand 6 states. [2019-09-16 17:08:48,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:48,162 INFO L93 Difference]: Finished difference Result 328 states and 380 transitions. [2019-09-16 17:08:48,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:08:48,162 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2019-09-16 17:08:48,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:48,167 INFO L225 Difference]: With dead ends: 328 [2019-09-16 17:08:48,167 INFO L226 Difference]: Without dead ends: 328 [2019-09-16 17:08:48,167 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:08:48,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2019-09-16 17:08:48,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 324. [2019-09-16 17:08:48,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2019-09-16 17:08:48,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 376 transitions. [2019-09-16 17:08:48,189 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 376 transitions. Word has length 80 [2019-09-16 17:08:48,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:48,189 INFO L475 AbstractCegarLoop]: Abstraction has 324 states and 376 transitions. [2019-09-16 17:08:48,189 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:08:48,190 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 376 transitions. [2019-09-16 17:08:48,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-16 17:08:48,192 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:48,192 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:48,193 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:48,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:48,193 INFO L82 PathProgramCache]: Analyzing trace with hash 871612076, now seen corresponding path program 1 times [2019-09-16 17:08:48,193 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:48,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:48,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:48,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:48,196 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:48,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:48,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:48,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:08:48,308 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:48,309 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:08:48,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:08:48,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:08:48,310 INFO L87 Difference]: Start difference. First operand 324 states and 376 transitions. Second operand 6 states. [2019-09-16 17:08:48,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:48,583 INFO L93 Difference]: Finished difference Result 496 states and 586 transitions. [2019-09-16 17:08:48,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:08:48,584 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2019-09-16 17:08:48,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:48,588 INFO L225 Difference]: With dead ends: 496 [2019-09-16 17:08:48,588 INFO L226 Difference]: Without dead ends: 496 [2019-09-16 17:08:48,589 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:08:48,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2019-09-16 17:08:48,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 478. [2019-09-16 17:08:48,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2019-09-16 17:08:48,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 565 transitions. [2019-09-16 17:08:48,643 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 565 transitions. Word has length 84 [2019-09-16 17:08:48,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:48,644 INFO L475 AbstractCegarLoop]: Abstraction has 478 states and 565 transitions. [2019-09-16 17:08:48,644 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:08:48,644 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 565 transitions. [2019-09-16 17:08:48,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-16 17:08:48,651 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:48,651 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:48,652 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:48,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:48,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1201377837, now seen corresponding path program 1 times [2019-09-16 17:08:48,652 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:48,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:48,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:48,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:48,656 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:48,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:48,746 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:48,746 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 17:08:48,746 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:48,746 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 17:08:48,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 17:08:48,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 17:08:48,747 INFO L87 Difference]: Start difference. First operand 478 states and 565 transitions. Second operand 5 states. [2019-09-16 17:08:48,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:48,775 INFO L93 Difference]: Finished difference Result 488 states and 575 transitions. [2019-09-16 17:08:48,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-16 17:08:48,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2019-09-16 17:08:48,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:48,781 INFO L225 Difference]: With dead ends: 488 [2019-09-16 17:08:48,781 INFO L226 Difference]: Without dead ends: 488 [2019-09-16 17:08:48,782 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 17:08:48,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2019-09-16 17:08:48,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 482. [2019-09-16 17:08:48,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2019-09-16 17:08:48,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 568 transitions. [2019-09-16 17:08:48,814 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 568 transitions. Word has length 84 [2019-09-16 17:08:48,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:48,815 INFO L475 AbstractCegarLoop]: Abstraction has 482 states and 568 transitions. [2019-09-16 17:08:48,815 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 17:08:48,815 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 568 transitions. [2019-09-16 17:08:48,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-16 17:08:48,820 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:48,821 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:08:48,821 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:48,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:48,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1128991279, now seen corresponding path program 1 times [2019-09-16 17:08:48,822 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:48,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:48,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:48,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:48,825 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:48,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:08:48,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:08:48,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-16 17:08:48,964 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:48,964 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-16 17:08:48,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-16 17:08:48,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:08:48,965 INFO L87 Difference]: Start difference. First operand 482 states and 568 transitions. Second operand 9 states. [2019-09-16 17:08:49,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:49,020 INFO L93 Difference]: Finished difference Result 499 states and 591 transitions. [2019-09-16 17:08:49,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-16 17:08:49,021 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2019-09-16 17:08:49,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:49,024 INFO L225 Difference]: With dead ends: 499 [2019-09-16 17:08:49,024 INFO L226 Difference]: Without dead ends: 499 [2019-09-16 17:08:49,025 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-09-16 17:08:49,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2019-09-16 17:08:49,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 489. [2019-09-16 17:08:49,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2019-09-16 17:08:49,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 575 transitions. [2019-09-16 17:08:49,045 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 575 transitions. Word has length 84 [2019-09-16 17:08:49,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:49,045 INFO L475 AbstractCegarLoop]: Abstraction has 489 states and 575 transitions. [2019-09-16 17:08:49,045 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-16 17:08:49,045 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 575 transitions. [2019-09-16 17:08:49,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-16 17:08:49,048 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:08:49,048 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] [2019-09-16 17:08:49,048 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:08:49,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:49,049 INFO L82 PathProgramCache]: Analyzing trace with hash -482545033, now seen corresponding path program 1 times [2019-09-16 17:08:49,049 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:08:49,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:49,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:08:49,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:08:49,051 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:08:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:08:49,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-16 17:08:49,150 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:08:49,150 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:08:49,151 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 97 with the following transitions: [2019-09-16 17:08:49,154 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [83], [99], [103], [104], [105], [108], [110], [113], [123], [125], [134], [138], [142], [145], [150], [156], [158], [164], [167], [186], [188], [191], [196], [197], [199], [204], [206], [207], [208], [209], [215], [219], [252], [253], [265], [269], [270], [273], [274], [275], [298], [300], [301], [370], [371], [381], [383], [388], [390], [393], [395], [400], [407], [415], [416], [417], [418], [419], [420], [421], [422], [423], [455], [456], [457], [458], [463], [464], [469], [473], [474], [477], [478], [481], [482], [483], [491], [493], [494], [499], [500], [501], [502], [503], [504], [505], [507], [508], [509] [2019-09-16 17:08:49,205 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:08:49,205 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:08:49,299 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:08:49,300 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 126 variables. [2019-09-16 17:08:49,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:08:49,304 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:08:49,347 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-16 17:08:49,347 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:08:49,351 INFO L420 sIntCurrentIteration]: We unified 95 AI predicates to 95 [2019-09-16 17:08:49,351 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:08:49,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:08:49,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2019-09-16 17:08:49,353 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:08:49,353 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:08:49,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:08:49,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:08:49,354 INFO L87 Difference]: Start difference. First operand 489 states and 575 transitions. Second operand 2 states. [2019-09-16 17:08:49,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:08:49,354 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-16 17:08:49,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:08:49,355 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 96 [2019-09-16 17:08:49,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:08:49,355 INFO L225 Difference]: With dead ends: 2 [2019-09-16 17:08:49,355 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:08:49,356 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:08:49,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:08:49,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:08:49,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:08:49,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:08:49,357 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 96 [2019-09-16 17:08:49,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:08:49,357 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:08:49,357 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:08:49,357 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:08:49,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:08:49,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:08:49 BoogieIcfgContainer [2019-09-16 17:08:49,363 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:08:49,366 INFO L168 Benchmark]: Toolchain (without parser) took 5780.66 ms. Allocated memory was 132.6 MB in the beginning and 264.8 MB in the end (delta: 132.1 MB). Free memory was 87.1 MB in the beginning and 101.0 MB in the end (delta: -14.0 MB). Peak memory consumption was 118.1 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:49,367 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 132.6 MB. Free memory was 106.9 MB in the beginning and 106.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:08:49,370 INFO L168 Benchmark]: CACSL2BoogieTranslator took 775.88 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 86.9 MB in the beginning and 163.9 MB in the end (delta: -77.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:49,372 INFO L168 Benchmark]: Boogie Preprocessor took 94.61 ms. Allocated memory is still 199.2 MB. Free memory was 163.9 MB in the beginning and 159.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:49,380 INFO L168 Benchmark]: RCFGBuilder took 1235.96 ms. Allocated memory was 199.2 MB in the beginning and 222.8 MB in the end (delta: 23.6 MB). Free memory was 159.5 MB in the beginning and 193.7 MB in the end (delta: -34.2 MB). Peak memory consumption was 90.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:49,383 INFO L168 Benchmark]: TraceAbstraction took 3669.13 ms. Allocated memory was 222.8 MB in the beginning and 264.8 MB in the end (delta: 41.9 MB). Free memory was 193.7 MB in the beginning and 101.0 MB in the end (delta: 92.6 MB). Peak memory consumption was 134.6 MB. Max. memory is 7.1 GB. [2019-09-16 17:08:49,389 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 132.6 MB. Free memory was 106.9 MB in the beginning and 106.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 775.88 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 86.9 MB in the beginning and 163.9 MB in the end (delta: -77.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.61 ms. Allocated memory is still 199.2 MB. Free memory was 163.9 MB in the beginning and 159.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1235.96 ms. Allocated memory was 199.2 MB in the beginning and 222.8 MB in the end (delta: 23.6 MB). Free memory was 159.5 MB in the beginning and 193.7 MB in the end (delta: -34.2 MB). Peak memory consumption was 90.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3669.13 ms. Allocated memory was 222.8 MB in the beginning and 264.8 MB in the end (delta: 41.9 MB). Free memory was 193.7 MB in the beginning and 101.0 MB in the end (delta: 92.6 MB). Peak memory consumption was 134.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 497]: 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 39 procedures, 229 locations, 1 error locations. SAFE Result, 3.6s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1168 SDtfs, 519 SDslu, 2877 SDs, 0 SdLazy, 602 SolverSat, 134 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 166 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=489occurred 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, 1.1789473684210525 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 57 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 657 NumberOfCodeBlocks, 657 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 648 ConstructedInterpolants, 0 QuantifiedInterpolants, 78557 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 1/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...