/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 17:55:29,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 17:55:29,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 17:55:29,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 17:55:29,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 17:55:29,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 17:55:29,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 17:55:29,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 17:55:29,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 17:55:29,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 17:55:29,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 17:55:29,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 17:55:29,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 17:55:29,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 17:55:29,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 17:55:29,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 17:55:29,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 17:55:29,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 17:55:29,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 17:55:29,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 17:55:29,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 17:55:29,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 17:55:29,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 17:55:29,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 17:55:29,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 17:55:29,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 17:55:29,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 17:55:29,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 17:55:29,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 17:55:29,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 17:55:29,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 17:55:29,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 17:55:29,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 17:55:29,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 17:55:29,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 17:55:29,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 17:55:29,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 17:55:29,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 17:55:29,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 17:55:29,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 17:55:29,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 17:55:29,445 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 17:55:29,454 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 17:55:29,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 17:55:29,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 17:55:29,455 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 17:55:29,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 17:55:29,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 17:55:29,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 17:55:29,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 17:55:29,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 17:55:29,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 17:55:29,457 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 17:55:29,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 17:55:29,457 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 17:55:29,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 17:55:29,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 17:55:29,458 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 17:55:29,458 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 17:55:29,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 17:55:29,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 17:55:29,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 17:55:29,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 17:55:29,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 17:55:29,459 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 17:55:29,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 17:55:29,768 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 17:55:29,771 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 17:55:29,773 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 17:55:29,773 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 17:55:29,774 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c [2020-08-22 17:55:29,851 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/910bb89a3/6854be895503486c89398f9b68327d67/FLAG38a6fbf2a [2020-08-22 17:55:30,396 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 17:55:30,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c [2020-08-22 17:55:30,420 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/910bb89a3/6854be895503486c89398f9b68327d67/FLAG38a6fbf2a [2020-08-22 17:55:30,695 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/910bb89a3/6854be895503486c89398f9b68327d67 [2020-08-22 17:55:30,707 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 17:55:30,709 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 17:55:30,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 17:55:30,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 17:55:30,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 17:55:30,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:55:30" (1/1) ... [2020-08-22 17:55:30,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15979b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:55:30, skipping insertion in model container [2020-08-22 17:55:30,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:55:30" (1/1) ... [2020-08-22 17:55:30,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 17:55:30,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 17:55:31,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 17:55:31,244 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 17:55:31,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 17:55:31,383 INFO L208 MainTranslator]: Completed translation [2020-08-22 17:55:31,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:55:31 WrapperNode [2020-08-22 17:55:31,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 17:55:31,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 17:55:31,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 17:55:31,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 17:55:31,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:55:31" (1/1) ... [2020-08-22 17:55:31,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:55:31" (1/1) ... [2020-08-22 17:55:31,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:55:31" (1/1) ... [2020-08-22 17:55:31,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:55:31" (1/1) ... [2020-08-22 17:55:31,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:55:31" (1/1) ... [2020-08-22 17:55:31,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:55:31" (1/1) ... [2020-08-22 17:55:31,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:55:31" (1/1) ... [2020-08-22 17:55:31,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 17:55:31,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 17:55:31,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 17:55:31,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 17:55:31,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:55:31" (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 [2020-08-22 17:55:31,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 17:55:31,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 17:55:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 17:55:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 17:55:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 17:55:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 17:55:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 17:55:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 17:55:31,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 17:55:31,546 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 17:55:31,546 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 17:55:31,546 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 17:55:31,546 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 17:55:31,546 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 17:55:31,547 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 17:55:31,547 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 17:55:31,547 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 17:55:31,547 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 17:55:31,547 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 17:55:31,547 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 17:55:31,548 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 17:55:31,548 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 17:55:31,548 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 17:55:31,548 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 17:55:31,548 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 17:55:31,548 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 17:55:31,549 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 17:55:31,549 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 17:55:31,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 17:55:31,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 17:55:31,549 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 17:55:31,549 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 17:55:31,550 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 17:55:31,550 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 17:55:31,550 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 17:55:31,550 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 17:55:31,550 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 17:55:31,550 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 17:55:31,551 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 17:55:31,551 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 17:55:31,551 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 17:55:31,551 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 17:55:31,551 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 17:55:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 17:55:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 17:55:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 17:55:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 17:55:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 17:55:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 17:55:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 17:55:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 17:55:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 17:55:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 17:55:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 17:55:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 17:55:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 17:55:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 17:55:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 17:55:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 17:55:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 17:55:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 17:55:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 17:55:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 17:55:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 17:55:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 17:55:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 17:55:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 17:55:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 17:55:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 17:55:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 17:55:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 17:55:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 17:55:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 17:55:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 17:55:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 17:55:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 17:55:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 17:55:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 17:55:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 17:55:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 17:55:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 17:55:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 17:55:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 17:55:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 17:55:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 17:55:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 17:55:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 17:55:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 17:55:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 17:55:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 17:55:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 17:55:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 17:55:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 17:55:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 17:55:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 17:55:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 17:55:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 17:55:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 17:55:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 17:55:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 17:55:32,674 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 17:55:32,674 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 17:55:32,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:55:32 BoogieIcfgContainer [2020-08-22 17:55:32,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 17:55:32,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 17:55:32,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 17:55:32,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 17:55:32,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:55:30" (1/3) ... [2020-08-22 17:55:32,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa488c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:55:32, skipping insertion in model container [2020-08-22 17:55:32,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:55:31" (2/3) ... [2020-08-22 17:55:32,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa488c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:55:32, skipping insertion in model container [2020-08-22 17:55:32,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:55:32" (3/3) ... [2020-08-22 17:55:32,690 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product56.cil.c [2020-08-22 17:55:32,701 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 17:55:32,709 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 17:55:32,724 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 17:55:32,743 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 17:55:32,744 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 17:55:32,744 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 17:55:32,744 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 17:55:32,744 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 17:55:32,744 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 17:55:32,744 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 17:55:32,745 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 17:55:32,767 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states. [2020-08-22 17:55:32,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-22 17:55:32,789 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:32,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:32,791 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:32,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:32,798 INFO L82 PathProgramCache]: Analyzing trace with hash 826882234, now seen corresponding path program 1 times [2020-08-22 17:55:32,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:32,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224911501] [2020-08-22 17:55:32,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:32,873 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:33,556 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:33,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:33,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:33,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:33,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:33,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:33,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:55:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:33,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 17:55:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:33,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:55:33,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224911501] [2020-08-22 17:55:33,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:33,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 17:55:33,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135935451] [2020-08-22 17:55:33,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 17:55:33,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:33,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 17:55:33,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 17:55:33,800 INFO L87 Difference]: Start difference. First operand 342 states. Second operand 3 states. [2020-08-22 17:55:35,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:35,450 INFO L93 Difference]: Finished difference Result 554 states and 662 transitions. [2020-08-22 17:55:35,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 17:55:35,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-08-22 17:55:35,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:35,473 INFO L225 Difference]: With dead ends: 554 [2020-08-22 17:55:35,473 INFO L226 Difference]: Without dead ends: 337 [2020-08-22 17:55:35,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 17:55:35,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-08-22 17:55:35,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 291. [2020-08-22 17:55:35,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-08-22 17:55:35,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 320 transitions. [2020-08-22 17:55:35,640 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 320 transitions. Word has length 142 [2020-08-22 17:55:35,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:35,641 INFO L479 AbstractCegarLoop]: Abstraction has 291 states and 320 transitions. [2020-08-22 17:55:35,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 17:55:35,641 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 320 transitions. [2020-08-22 17:55:35,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-22 17:55:35,646 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:35,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:35,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 17:55:35,648 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:35,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:35,648 INFO L82 PathProgramCache]: Analyzing trace with hash -820599246, now seen corresponding path program 1 times [2020-08-22 17:55:35,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:35,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127488392] [2020-08-22 17:55:35,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:35,652 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:36,031 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:36,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:36,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:36,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:36,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:36,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:36,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 17:55:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:36,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 17:55:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:36,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:55:36,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127488392] [2020-08-22 17:55:36,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:36,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 17:55:36,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543533021] [2020-08-22 17:55:36,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 17:55:36,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:36,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 17:55:36,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 17:55:36,111 INFO L87 Difference]: Start difference. First operand 291 states and 320 transitions. Second operand 4 states. [2020-08-22 17:55:36,801 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:38,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:38,112 INFO L93 Difference]: Finished difference Result 461 states and 525 transitions. [2020-08-22 17:55:38,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 17:55:38,116 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-08-22 17:55:38,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:38,121 INFO L225 Difference]: With dead ends: 461 [2020-08-22 17:55:38,122 INFO L226 Difference]: Without dead ends: 320 [2020-08-22 17:55:38,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 17:55:38,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-08-22 17:55:38,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 281. [2020-08-22 17:55:38,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-08-22 17:55:38,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 307 transitions. [2020-08-22 17:55:38,207 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 307 transitions. Word has length 143 [2020-08-22 17:55:38,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:38,208 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 307 transitions. [2020-08-22 17:55:38,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 17:55:38,208 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 307 transitions. [2020-08-22 17:55:38,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-22 17:55:38,211 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:38,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:38,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 17:55:38,212 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:38,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:38,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1576489327, now seen corresponding path program 1 times [2020-08-22 17:55:38,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:38,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499907994] [2020-08-22 17:55:38,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:38,215 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:38,530 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:38,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:38,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:38,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:38,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:38,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:38,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 17:55:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:38,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 17:55:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:38,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 17:55:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:38,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:55:38,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499907994] [2020-08-22 17:55:38,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:38,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 17:55:38,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85609834] [2020-08-22 17:55:38,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 17:55:38,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:38,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 17:55:38,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 17:55:38,691 INFO L87 Difference]: Start difference. First operand 281 states and 307 transitions. Second operand 10 states. [2020-08-22 17:55:39,325 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:39,767 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:40,075 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:55:40,319 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:40,581 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:55:40,833 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:41,774 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:44,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:44,651 INFO L93 Difference]: Finished difference Result 782 states and 917 transitions. [2020-08-22 17:55:44,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 17:55:44,652 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-08-22 17:55:44,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:44,661 INFO L225 Difference]: With dead ends: 782 [2020-08-22 17:55:44,661 INFO L226 Difference]: Without dead ends: 611 [2020-08-22 17:55:44,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-08-22 17:55:44,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2020-08-22 17:55:44,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 512. [2020-08-22 17:55:44,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-08-22 17:55:44,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 578 transitions. [2020-08-22 17:55:44,872 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 578 transitions. Word has length 156 [2020-08-22 17:55:44,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:44,873 INFO L479 AbstractCegarLoop]: Abstraction has 512 states and 578 transitions. [2020-08-22 17:55:44,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 17:55:44,873 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 578 transitions. [2020-08-22 17:55:44,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-22 17:55:44,876 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:44,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:44,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 17:55:44,877 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:44,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:44,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1953483698, now seen corresponding path program 1 times [2020-08-22 17:55:44,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:44,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355127538] [2020-08-22 17:55:44,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:44,881 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:45,181 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:45,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:45,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:45,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:45,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:45,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:45,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:45,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 17:55:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:45,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 17:55:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:45,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 17:55:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:45,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:55:45,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355127538] [2020-08-22 17:55:45,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:45,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 17:55:45,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199123238] [2020-08-22 17:55:45,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 17:55:45,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:45,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 17:55:45,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 17:55:45,317 INFO L87 Difference]: Start difference. First operand 512 states and 578 transitions. Second operand 9 states. [2020-08-22 17:55:45,837 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:47,019 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:47,301 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:55:47,719 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:47,996 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:48,267 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:48,635 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:55:48,930 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:49,596 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:50,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:50,956 INFO L93 Difference]: Finished difference Result 1442 states and 1734 transitions. [2020-08-22 17:55:50,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 17:55:50,957 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-08-22 17:55:50,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:50,971 INFO L225 Difference]: With dead ends: 1442 [2020-08-22 17:55:50,971 INFO L226 Difference]: Without dead ends: 1040 [2020-08-22 17:55:50,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-08-22 17:55:50,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2020-08-22 17:55:51,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 875. [2020-08-22 17:55:51,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 875 states. [2020-08-22 17:55:51,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1002 transitions. [2020-08-22 17:55:51,286 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1002 transitions. Word has length 161 [2020-08-22 17:55:51,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:51,287 INFO L479 AbstractCegarLoop]: Abstraction has 875 states and 1002 transitions. [2020-08-22 17:55:51,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 17:55:51,287 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1002 transitions. [2020-08-22 17:55:51,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-22 17:55:51,291 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:51,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:51,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 17:55:51,292 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:51,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:51,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1356616012, now seen corresponding path program 1 times [2020-08-22 17:55:51,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:51,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103381643] [2020-08-22 17:55:51,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:51,295 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:51,608 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:51,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:51,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:51,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:51,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:51,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:51,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:55:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:51,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 17:55:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:51,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 17:55:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:51,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-08-22 17:55:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:51,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:55:51,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103381643] [2020-08-22 17:55:51,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:51,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 17:55:51,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392826426] [2020-08-22 17:55:51,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 17:55:51,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:51,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 17:55:51,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 17:55:51,793 INFO L87 Difference]: Start difference. First operand 875 states and 1002 transitions. Second operand 10 states. [2020-08-22 17:55:52,236 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:53,682 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:53,939 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:55:54,192 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:54,456 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:55:54,682 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:55,435 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:55,653 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:55,976 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:57,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:57,500 INFO L93 Difference]: Finished difference Result 2250 states and 2781 transitions. [2020-08-22 17:55:57,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 17:55:57,501 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-08-22 17:55:57,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:57,511 INFO L225 Difference]: With dead ends: 2250 [2020-08-22 17:55:57,511 INFO L226 Difference]: Without dead ends: 1485 [2020-08-22 17:55:57,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-08-22 17:55:57,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2020-08-22 17:55:57,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1217. [2020-08-22 17:55:57,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2020-08-22 17:55:57,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1409 transitions. [2020-08-22 17:55:57,834 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1409 transitions. Word has length 166 [2020-08-22 17:55:57,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:57,834 INFO L479 AbstractCegarLoop]: Abstraction has 1217 states and 1409 transitions. [2020-08-22 17:55:57,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 17:55:57,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1409 transitions. [2020-08-22 17:55:57,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-08-22 17:55:57,839 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:57,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:57,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 17:55:57,840 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:57,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:57,840 INFO L82 PathProgramCache]: Analyzing trace with hash 515628642, now seen corresponding path program 1 times [2020-08-22 17:55:57,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:57,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039480002] [2020-08-22 17:55:57,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:57,843 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:58,156 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:58,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:58,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:58,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:58,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:58,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:58,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:55:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:58,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:55:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:58,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 17:55:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:58,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:58,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:58,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:58,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:55:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:58,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:55:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:58,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-22 17:55:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:58,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-08-22 17:55:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:58,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:55:58,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039480002] [2020-08-22 17:55:58,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:58,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 17:55:58,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158785649] [2020-08-22 17:55:58,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 17:55:58,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:58,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 17:55:58,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-08-22 17:55:58,382 INFO L87 Difference]: Start difference. First operand 1217 states and 1409 transitions. Second operand 14 states. [2020-08-22 17:55:58,949 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:59,207 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:55:59,437 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:59,666 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:59,882 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:56:00,897 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:56:01,134 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:56:01,392 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:56:01,659 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:56:01,916 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:56:04,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:56:04,235 INFO L93 Difference]: Finished difference Result 2953 states and 3770 transitions. [2020-08-22 17:56:04,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 17:56:04,235 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 204 [2020-08-22 17:56:04,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:56:04,248 INFO L225 Difference]: With dead ends: 2953 [2020-08-22 17:56:04,248 INFO L226 Difference]: Without dead ends: 1846 [2020-08-22 17:56:04,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-08-22 17:56:04,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2020-08-22 17:56:04,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1247. [2020-08-22 17:56:04,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2020-08-22 17:56:04,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1441 transitions. [2020-08-22 17:56:04,887 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1441 transitions. Word has length 204 [2020-08-22 17:56:04,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:56:04,887 INFO L479 AbstractCegarLoop]: Abstraction has 1247 states and 1441 transitions. [2020-08-22 17:56:04,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 17:56:04,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1441 transitions. [2020-08-22 17:56:04,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-08-22 17:56:04,892 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:56:04,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:56:04,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 17:56:04,893 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:56:04,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:56:04,894 INFO L82 PathProgramCache]: Analyzing trace with hash 101997250, now seen corresponding path program 1 times [2020-08-22 17:56:04,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:56:04,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055354611] [2020-08-22 17:56:04,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:56:04,897 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:56:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:05,190 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:56:05,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:56:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:05,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:56:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:05,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:56:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:05,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:56:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:05,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:56:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:05,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:56:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:05,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:56:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:05,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 17:56:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:05,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:56:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:05,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:56:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:05,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:56:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:05,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:56:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:05,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:56:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:05,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-22 17:56:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:05,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-08-22 17:56:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:05,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:56:05,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055354611] [2020-08-22 17:56:05,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:56:05,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 17:56:05,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152733190] [2020-08-22 17:56:05,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 17:56:05,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:56:05,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 17:56:05,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-08-22 17:56:05,415 INFO L87 Difference]: Start difference. First operand 1247 states and 1441 transitions. Second operand 11 states. [2020-08-22 17:56:06,897 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:56:07,162 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:56:07,456 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 17:56:07,745 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:56:08,016 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:56:08,246 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:56:10,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:56:10,247 INFO L93 Difference]: Finished difference Result 2995 states and 3739 transitions. [2020-08-22 17:56:10,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 17:56:10,248 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 204 [2020-08-22 17:56:10,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:56:10,259 INFO L225 Difference]: With dead ends: 2995 [2020-08-22 17:56:10,259 INFO L226 Difference]: Without dead ends: 1858 [2020-08-22 17:56:10,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-08-22 17:56:10,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2020-08-22 17:56:10,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1279. [2020-08-22 17:56:10,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-08-22 17:56:10,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1473 transitions. [2020-08-22 17:56:10,863 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1473 transitions. Word has length 204 [2020-08-22 17:56:10,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:56:10,865 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 1473 transitions. [2020-08-22 17:56:10,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 17:56:10,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1473 transitions. [2020-08-22 17:56:10,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-08-22 17:56:10,877 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:56:10,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:56:10,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 17:56:10,878 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:56:10,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:56:10,878 INFO L82 PathProgramCache]: Analyzing trace with hash 446110533, now seen corresponding path program 1 times [2020-08-22 17:56:10,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:56:10,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293596266] [2020-08-22 17:56:10,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:56:10,883 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:56:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:11,195 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:56:11,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:56:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:11,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:56:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:11,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:56:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:11,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:56:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:11,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:56:11,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:11,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:56:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:11,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 17:56:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:11,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 17:56:11,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:11,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:56:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:11,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:56:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:11,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:56:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:11,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:56:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:11,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:56:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:11,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-22 17:56:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:11,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-08-22 17:56:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:56:11,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:56:11,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293596266] [2020-08-22 17:56:11,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:56:11,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 17:56:11,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517211983] [2020-08-22 17:56:11,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 17:56:11,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:56:11,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 17:56:11,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 17:56:11,447 INFO L87 Difference]: Start difference. First operand 1279 states and 1473 transitions. Second operand 8 states. [2020-08-22 17:56:11,954 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:56:12,585 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:56:17,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:56:17,246 INFO L93 Difference]: Finished difference Result 4593 states and 5883 transitions. [2020-08-22 17:56:17,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 17:56:17,246 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 204 [2020-08-22 17:56:17,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:56:17,267 INFO L225 Difference]: With dead ends: 4593 [2020-08-22 17:56:17,268 INFO L226 Difference]: Without dead ends: 3424 [2020-08-22 17:56:17,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-08-22 17:56:17,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3424 states. [2020-08-22 17:56:18,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3424 to 2499. [2020-08-22 17:56:18,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2499 states. [2020-08-22 17:56:18,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 2905 transitions. [2020-08-22 17:56:18,491 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 2905 transitions. Word has length 204 [2020-08-22 17:56:18,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:56:18,492 INFO L479 AbstractCegarLoop]: Abstraction has 2499 states and 2905 transitions. [2020-08-22 17:56:18,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 17:56:18,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 2905 transitions. [2020-08-22 17:56:18,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-08-22 17:56:18,497 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:56:18,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:56:18,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 17:56:18,498 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:56:18,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:56:18,498 INFO L82 PathProgramCache]: Analyzing trace with hash 2057395573, now seen corresponding path program 1 times [2020-08-22 17:56:18,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:56:18,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881021050] [2020-08-22 17:56:18,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:56:18,501 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:56:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 17:56:18,552 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 17:56:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 17:56:18,600 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 17:56:18,791 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 17:56:18,791 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 17:56:18,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 17:56:18,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:56:18 BoogieIcfgContainer [2020-08-22 17:56:18,817 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 17:56:18,818 INFO L168 Benchmark]: Toolchain (without parser) took 48109.53 ms. Allocated memory was 145.8 MB in the beginning and 1.1 GB in the end (delta: 906.5 MB). Free memory was 102.2 MB in the beginning and 488.4 MB in the end (delta: -386.2 MB). Peak memory consumption was 520.3 MB. Max. memory is 7.1 GB. [2020-08-22 17:56:18,819 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 145.8 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 17:56:18,820 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.11 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 102.0 MB in the beginning and 171.0 MB in the end (delta: -69.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-08-22 17:56:18,820 INFO L168 Benchmark]: Boogie Preprocessor took 94.40 ms. Allocated memory is still 202.9 MB. Free memory was 171.0 MB in the beginning and 166.1 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-08-22 17:56:18,821 INFO L168 Benchmark]: RCFGBuilder took 1202.46 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 166.1 MB in the beginning and 171.4 MB in the end (delta: -5.3 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB. [2020-08-22 17:56:18,822 INFO L168 Benchmark]: TraceAbstraction took 46134.17 ms. Allocated memory was 235.9 MB in the beginning and 1.1 GB in the end (delta: 816.3 MB). Free memory was 171.4 MB in the beginning and 488.4 MB in the end (delta: -317.0 MB). Peak memory consumption was 499.4 MB. Max. memory is 7.1 GB. [2020-08-22 17:56:18,825 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 145.8 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 673.11 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 102.0 MB in the beginning and 171.0 MB in the end (delta: -69.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.40 ms. Allocated memory is still 202.9 MB. Free memory was 171.0 MB in the beginning and 166.1 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1202.46 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 166.1 MB in the beginning and 171.4 MB in the end (delta: -5.3 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46134.17 ms. Allocated memory was 235.9 MB in the beginning and 1.1 GB in the end (delta: 816.3 MB). Free memory was 171.4 MB in the beginning and 488.4 MB in the end (delta: -317.0 MB). Peak memory consumption was 499.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 806]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L490] int pumpRunning = 0; [L491] int systemActive = 1; [L811] int cleanupTimeShifts = 4; [L908] int waterLevel = 1; [L909] int methaneLevelCritical = 0; [L884] int retValue_acc ; [L885] int tmp ; [L889] FCALL select_helpers() [L890] FCALL select_features() [L891] CALL, EXPR valid_product() [L766] int retValue_acc ; [L769] retValue_acc = 1 [L770] return (retValue_acc); [L891] RET, EXPR valid_product() [L891] tmp = valid_product() [L893] COND TRUE \read(tmp) [L895] FCALL setup() [L896] CALL runTest() [L878] CALL test() [L413] int splverifierCounter ; [L414] int tmp ; [L415] int tmp___0 ; [L416] int tmp___1 ; [L417] int tmp___2 ; [L420] splverifierCounter = 0 [L422] COND TRUE 1 [L424] COND TRUE splverifierCounter < 4 [L430] tmp = __VERIFIER_nondet_int() [L432] COND TRUE \read(tmp) [L434] CALL waterRise() [L926] COND TRUE waterLevel < 2 [L927] waterLevel = waterLevel + 1 [L434] RET waterRise() [L440] tmp___0 = __VERIFIER_nondet_int() [L442] COND TRUE \read(tmp___0) [L444] CALL changeMethaneLevel() [L938] COND FALSE !(\read(methaneLevelCritical)) [L941] methaneLevelCritical = 1 [L444] RET changeMethaneLevel() [L450] tmp___2 = __VERIFIER_nondet_int() [L452] COND TRUE \read(tmp___2) [L454] CALL startSystem() [L732] systemActive = 1 [L454] RET startSystem() [L469] CALL timeShift() [L498] COND FALSE !(\read(pumpRunning)) [L505] COND TRUE \read(systemActive) [L507] CALL processEnvironment() [L579] int tmp ; [L582] COND FALSE !(\read(pumpRunning)) [L597] CALL processEnvironment__wrappee__lowWaterSensor() [L553] int tmp ; [L556] COND FALSE !(\read(pumpRunning)) [L571] CALL processEnvironment__wrappee__highWaterSensor() [L527] int tmp ; [L530] COND TRUE ! pumpRunning [L532] CALL, EXPR isHighWaterLevel() [L676] int retValue_acc ; [L677] int tmp ; [L678] int tmp___0 ; [L682] CALL, EXPR isHighWaterSensorDry() [L988] int retValue_acc ; [L991] COND FALSE !(waterLevel < 2) [L995] retValue_acc = 0 [L996] return (retValue_acc); [L682] RET, EXPR isHighWaterSensorDry() [L682] tmp = isHighWaterSensorDry() [L684] COND FALSE !(\read(tmp)) [L687] tmp___0 = 1 [L689] retValue_acc = tmp___0 [L690] return (retValue_acc); [L532] RET, EXPR isHighWaterLevel() [L532] tmp = isHighWaterLevel() [L534] COND TRUE \read(tmp) [L536] CALL activatePump() [L607] pumpRunning = 1 [L536] RET activatePump() [L571] RET processEnvironment__wrappee__highWaterSensor() [L597] RET processEnvironment__wrappee__lowWaterSensor() [L507] RET processEnvironment() [L513] CALL __utac_acc__Specification1_spec__1() [L777] int tmp ; [L778] int tmp___0 ; [L782] CALL, EXPR isMethaneLevelCritical() [L947] int retValue_acc ; [L950] retValue_acc = methaneLevelCritical [L951] return (retValue_acc); [L782] RET, EXPR isMethaneLevelCritical() [L782] tmp = isMethaneLevelCritical() [L784] COND TRUE \read(tmp) [L786] CALL, EXPR isPumpRunning() [L631] int retValue_acc ; [L634] retValue_acc = pumpRunning [L635] return (retValue_acc); [L786] RET, EXPR isPumpRunning() [L786] tmp___0 = isPumpRunning() [L788] COND TRUE \read(tmp___0) [L790] CALL __automaton_fail() [L806] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 659 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 46.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 37.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2250 SDtfs, 4800 SDslu, 4382 SDs, 0 SdLazy, 10294 SolverSat, 1617 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 342 GetRequests, 211 SyntacticMatches, 4 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 12.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2499occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 2720 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...