/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_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:02:25,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:02:25,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:02:25,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:02:25,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:02:25,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:02:25,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:02:25,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:02:25,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:02:25,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:02:25,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:02:25,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:02:25,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:02:25,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:02:25,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:02:25,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:02:25,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:02:25,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:02:25,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:02:25,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:02:25,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:02:25,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:02:25,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:02:25,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:02:25,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:02:25,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:02:25,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:02:25,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:02:25,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:02:25,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:02:25,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:02:25,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:02:25,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:02:25,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:02:25,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:02:25,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:02:25,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:02:25,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:02:25,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:02:25,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:02:25,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:02:25,336 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 15:02:25,355 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:02:25,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:02:25,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:02:25,357 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:02:25,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:02:25,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:02:25,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:02:25,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:02:25,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:02:25,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:02:25,359 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:02:25,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:02:25,359 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:02:25,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:02:25,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:02:25,360 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:02:25,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:02:25,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:02:25,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:02:25,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:02:25,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:02:25,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:02:25,362 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:02:25,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:02:25,776 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:02:25,780 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:02:25,781 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:02:25,782 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:02:25,783 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product42.cil.c [2020-09-04 15:02:25,871 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de00de154/0767deb4962140648ac9154058516928/FLAG6f98d6be1 [2020-09-04 15:02:26,503 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:02:26,505 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product42.cil.c [2020-09-04 15:02:26,523 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de00de154/0767deb4962140648ac9154058516928/FLAG6f98d6be1 [2020-09-04 15:02:26,790 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de00de154/0767deb4962140648ac9154058516928 [2020-09-04 15:02:26,803 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:02:26,805 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:02:26,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:02:26,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:02:26,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:02:26,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:02:26" (1/1) ... [2020-09-04 15:02:26,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c53af82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:26, skipping insertion in model container [2020-09-04 15:02:26,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:02:26" (1/1) ... [2020-09-04 15:02:26,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:02:26,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:02:27,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:02:27,342 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:02:27,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:02:27,497 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:02:27,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:27 WrapperNode [2020-09-04 15:02:27,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:02:27,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:02:27,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:02:27,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:02:27,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:27" (1/1) ... [2020-09-04 15:02:27,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:27" (1/1) ... [2020-09-04 15:02:27,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:27" (1/1) ... [2020-09-04 15:02:27,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:27" (1/1) ... [2020-09-04 15:02:27,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:27" (1/1) ... [2020-09-04 15:02:27,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:27" (1/1) ... [2020-09-04 15:02:27,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:27" (1/1) ... [2020-09-04 15:02:27,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:02:27,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:02:27,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:02:27,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:02:27,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 15:02:27,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:02:27,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:02:27,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:02:27,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:02:27,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:02:27,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:02:27,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:02:27,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:02:27,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:02:27,684 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:02:27,684 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:02:27,684 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:02:27,684 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:02:27,684 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:02:27,685 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:02:27,685 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:02:27,685 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:02:27,685 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:02:27,685 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:02:27,686 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:02:27,686 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-04 15:02:27,686 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:02:27,687 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:02:27,687 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:02:27,687 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:02:27,687 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:02:27,687 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:02:27,687 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-04 15:02:27,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:02:27,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-04 15:02:27,688 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:02:27,688 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:02:27,688 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:02:27,689 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:02:27,689 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:02:27,689 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:02:27,689 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:02:27,689 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:02:27,689 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:02:27,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:02:27,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:02:27,690 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:02:27,690 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:02:27,690 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:02:27,690 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:02:27,691 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:02:27,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:02:27,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:02:27,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:02:27,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:02:27,691 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:02:27,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:02:27,692 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:02:27,692 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:02:27,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:02:27,692 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:02:27,692 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:02:27,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:02:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:02:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:02:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:02:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:02:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:02:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:02:27,694 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:02:27,694 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:02:27,694 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-04 15:02:27,694 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:02:27,694 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:02:27,694 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:02:27,695 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:02:27,695 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:02:27,695 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:02:27,695 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:02:27,695 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-04 15:02:27,695 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:02:27,696 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:02:27,696 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:02:27,696 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-04 15:02:27,696 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:02:27,696 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:02:27,696 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:02:27,697 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:02:27,697 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:02:27,697 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:02:27,697 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:02:27,697 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:02:27,697 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:02:27,698 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:02:27,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:02:27,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:02:27,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:02:28,875 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:02:28,876 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:02:28,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:02:28 BoogieIcfgContainer [2020-09-04 15:02:28,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:02:28,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:02:28,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:02:28,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:02:28,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:02:26" (1/3) ... [2020-09-04 15:02:28,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d6536c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:02:28, skipping insertion in model container [2020-09-04 15:02:28,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:27" (2/3) ... [2020-09-04 15:02:28,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d6536c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:02:28, skipping insertion in model container [2020-09-04 15:02:28,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:02:28" (3/3) ... [2020-09-04 15:02:28,898 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product42.cil.c [2020-09-04 15:02:28,910 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:02:28,924 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:02:28,948 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:02:28,982 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:02:28,982 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:02:28,982 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:02:28,982 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:02:28,983 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:02:28,983 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:02:28,983 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:02:28,984 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:02:29,015 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states. [2020-09-04 15:02:29,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-04 15:02:29,049 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:29,050 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] [2020-09-04 15:02:29,051 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:29,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:29,060 INFO L82 PathProgramCache]: Analyzing trace with hash -2111431698, now seen corresponding path program 1 times [2020-09-04 15:02:29,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:29,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480679724] [2020-09-04 15:02:29,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:29,166 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:29,905 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:29,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:02:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:02:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:02:30,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480679724] [2020-09-04 15:02:30,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:30,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:02:30,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581060323] [2020-09-04 15:02:30,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:02:30,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:30,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:02:30,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:02:30,103 INFO L87 Difference]: Start difference. First operand 299 states. Second operand 3 states. [2020-09-04 15:02:31,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:31,463 INFO L93 Difference]: Finished difference Result 464 states and 551 transitions. [2020-09-04 15:02:31,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:02:31,466 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-04 15:02:31,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:31,499 INFO L225 Difference]: With dead ends: 464 [2020-09-04 15:02:31,500 INFO L226 Difference]: Without dead ends: 290 [2020-09-04 15:02:31,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:02:31,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-09-04 15:02:31,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 248. [2020-09-04 15:02:31,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-09-04 15:02:31,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 268 transitions. [2020-09-04 15:02:31,649 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 268 transitions. Word has length 142 [2020-09-04 15:02:31,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:31,650 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 268 transitions. [2020-09-04 15:02:31,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:02:31,651 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 268 transitions. [2020-09-04 15:02:31,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-04 15:02:31,655 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:31,656 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] [2020-09-04 15:02:31,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:02:31,656 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:31,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:31,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1885599248, now seen corresponding path program 1 times [2020-09-04 15:02:31,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:31,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470925263] [2020-09-04 15:02:31,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:31,661 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:32,111 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:32,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:32,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:32,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:32,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:32,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:32,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:02:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:32,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:02:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:32,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:02:32,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470925263] [2020-09-04 15:02:32,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:32,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:02:32,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233186735] [2020-09-04 15:02:32,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:02:32,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:32,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:02:32,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:02:32,202 INFO L87 Difference]: Start difference. First operand 248 states and 268 transitions. Second operand 4 states. [2020-09-04 15:02:32,845 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:33,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:33,764 INFO L93 Difference]: Finished difference Result 377 states and 422 transitions. [2020-09-04 15:02:33,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:02:33,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-04 15:02:33,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:33,778 INFO L225 Difference]: With dead ends: 377 [2020-09-04 15:02:33,778 INFO L226 Difference]: Without dead ends: 273 [2020-09-04 15:02:33,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:02:33,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-09-04 15:02:33,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 238. [2020-09-04 15:02:33,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-09-04 15:02:33,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 255 transitions. [2020-09-04 15:02:33,880 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 255 transitions. Word has length 143 [2020-09-04 15:02:33,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:33,881 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 255 transitions. [2020-09-04 15:02:33,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:02:33,881 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 255 transitions. [2020-09-04 15:02:33,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-04 15:02:33,887 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:33,888 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] [2020-09-04 15:02:33,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:02:33,888 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:33,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:33,889 INFO L82 PathProgramCache]: Analyzing trace with hash 2133556188, now seen corresponding path program 1 times [2020-09-04 15:02:33,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:33,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487245061] [2020-09-04 15:02:33,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:33,892 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:34,310 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:34,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:34,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:34,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:34,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:34,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:34,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:02:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:34,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:02:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:34,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:02:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:34,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:02:34,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487245061] [2020-09-04 15:02:34,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:34,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:02:34,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489432778] [2020-09-04 15:02:34,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:02:34,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:34,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:02:34,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:02:34,495 INFO L87 Difference]: Start difference. First operand 238 states and 255 transitions. Second operand 10 states. [2020-09-04 15:02:35,027 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:35,384 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:02:35,696 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:02:36,023 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:36,314 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:02:36,601 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:38,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:38,161 INFO L93 Difference]: Finished difference Result 423 states and 484 transitions. [2020-09-04 15:02:38,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 15:02:38,163 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-09-04 15:02:38,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:38,166 INFO L225 Difference]: With dead ends: 423 [2020-09-04 15:02:38,167 INFO L226 Difference]: Without dead ends: 295 [2020-09-04 15:02:38,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-09-04 15:02:38,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-09-04 15:02:38,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 238. [2020-09-04 15:02:38,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-09-04 15:02:38,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 254 transitions. [2020-09-04 15:02:38,239 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 254 transitions. Word has length 156 [2020-09-04 15:02:38,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:38,240 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 254 transitions. [2020-09-04 15:02:38,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:02:38,240 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 254 transitions. [2020-09-04 15:02:38,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-04 15:02:38,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:38,243 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] [2020-09-04 15:02:38,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:02:38,243 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:38,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:38,244 INFO L82 PathProgramCache]: Analyzing trace with hash -874630023, now seen corresponding path program 1 times [2020-09-04 15:02:38,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:38,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639555206] [2020-09-04 15:02:38,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:38,247 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:38,662 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:38,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:38,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:38,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:38,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:38,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:38,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:38,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:02:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:38,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:02:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:38,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:02:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:38,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 15:02:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:38,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-09-04 15:02:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:38,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:02:38,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639555206] [2020-09-04 15:02:38,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:38,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 15:02:38,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630479756] [2020-09-04 15:02:38,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 15:02:38,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:38,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 15:02:38,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-04 15:02:38,904 INFO L87 Difference]: Start difference. First operand 238 states and 254 transitions. Second operand 7 states. [2020-09-04 15:02:39,490 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:41,031 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:41,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:41,946 INFO L93 Difference]: Finished difference Result 594 states and 701 transitions. [2020-09-04 15:02:41,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-04 15:02:41,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-09-04 15:02:41,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:41,953 INFO L225 Difference]: With dead ends: 594 [2020-09-04 15:02:41,953 INFO L226 Difference]: Without dead ends: 466 [2020-09-04 15:02:41,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-04 15:02:41,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-09-04 15:02:42,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 339. [2020-09-04 15:02:42,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-09-04 15:02:42,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 365 transitions. [2020-09-04 15:02:42,089 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 365 transitions. Word has length 164 [2020-09-04 15:02:42,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:42,089 INFO L479 AbstractCegarLoop]: Abstraction has 339 states and 365 transitions. [2020-09-04 15:02:42,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 15:02:42,090 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 365 transitions. [2020-09-04 15:02:42,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-04 15:02:42,092 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:42,092 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] [2020-09-04 15:02:42,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:02:42,093 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:42,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:42,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1983899201, now seen corresponding path program 1 times [2020-09-04 15:02:42,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:42,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145160097] [2020-09-04 15:02:42,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:42,097 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:42,413 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:42,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:42,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:42,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:42,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:42,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:42,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:02:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:42,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:02:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:42,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:02:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:42,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:02:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:42,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:02:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:42,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-09-04 15:02:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:42,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-09-04 15:02:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:42,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:02:42,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145160097] [2020-09-04 15:02:42,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:42,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 15:02:42,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754526709] [2020-09-04 15:02:42,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 15:02:42,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:42,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 15:02:42,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-04 15:02:42,662 INFO L87 Difference]: Start difference. First operand 339 states and 365 transitions. Second operand 13 states. [2020-09-04 15:02:43,273 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:43,552 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:02:43,856 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:44,134 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:02:44,412 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:45,362 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:45,652 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:02:45,957 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:46,266 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:02:46,548 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:47,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:47,996 INFO L93 Difference]: Finished difference Result 700 states and 824 transitions. [2020-09-04 15:02:48,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 15:02:48,000 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 188 [2020-09-04 15:02:48,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:48,004 INFO L225 Difference]: With dead ends: 700 [2020-09-04 15:02:48,004 INFO L226 Difference]: Without dead ends: 471 [2020-09-04 15:02:48,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-09-04 15:02:48,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-09-04 15:02:48,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 345. [2020-09-04 15:02:48,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-09-04 15:02:48,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 371 transitions. [2020-09-04 15:02:48,107 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 371 transitions. Word has length 188 [2020-09-04 15:02:48,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:48,107 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 371 transitions. [2020-09-04 15:02:48,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 15:02:48,108 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 371 transitions. [2020-09-04 15:02:48,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-04 15:02:48,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:48,110 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] [2020-09-04 15:02:48,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:02:48,111 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:48,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:48,111 INFO L82 PathProgramCache]: Analyzing trace with hash 694378847, now seen corresponding path program 1 times [2020-09-04 15:02:48,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:48,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330446215] [2020-09-04 15:02:48,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:48,114 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:48,551 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:48,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:48,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:48,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:48,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:48,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:48,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:02:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:48,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:02:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:48,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:02:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:48,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:02:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:48,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:02:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:48,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-09-04 15:02:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:48,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-09-04 15:02:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:48,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:02:48,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330446215] [2020-09-04 15:02:48,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:48,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:02:48,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452762005] [2020-09-04 15:02:48,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:02:48,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:48,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:02:48,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:02:48,730 INFO L87 Difference]: Start difference. First operand 345 states and 371 transitions. Second operand 10 states. [2020-09-04 15:02:49,292 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:50,652 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:50,964 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:02:51,315 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:51,600 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:52,210 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:52,513 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:02:52,819 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:53,191 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:54,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:54,477 INFO L93 Difference]: Finished difference Result 1004 states and 1212 transitions. [2020-09-04 15:02:54,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 15:02:54,479 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 188 [2020-09-04 15:02:54,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:54,484 INFO L225 Difference]: With dead ends: 1004 [2020-09-04 15:02:54,484 INFO L226 Difference]: Without dead ends: 769 [2020-09-04 15:02:54,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-09-04 15:02:54,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-09-04 15:02:54,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 543. [2020-09-04 15:02:54,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-04 15:02:54,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 590 transitions. [2020-09-04 15:02:54,662 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 590 transitions. Word has length 188 [2020-09-04 15:02:54,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:54,662 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 590 transitions. [2020-09-04 15:02:54,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:02:54,663 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 590 transitions. [2020-09-04 15:02:54,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-04 15:02:54,665 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:54,666 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] [2020-09-04 15:02:54,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:02:54,666 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:54,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:54,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1001952340, now seen corresponding path program 1 times [2020-09-04 15:02:54,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:54,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027358366] [2020-09-04 15:02:54,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:54,670 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:55,042 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:55,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:55,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:55,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:55,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:55,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:55,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:02:55,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:55,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:02:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:55,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:02:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:55,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:02:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:55,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:02:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:55,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:02:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:55,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-09-04 15:02:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:55,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-04 15:02:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:55,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:02:55,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027358366] [2020-09-04 15:02:55,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:55,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:02:55,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512199856] [2020-09-04 15:02:55,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:02:55,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:55,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:02:55,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:02:55,236 INFO L87 Difference]: Start difference. First operand 543 states and 590 transitions. Second operand 11 states. [2020-09-04 15:02:55,788 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:57,402 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:57,651 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:58,048 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:59,377 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:59,704 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:00,010 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:00,320 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:00,602 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:01,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:01,150 INFO L93 Difference]: Finished difference Result 904 states and 1117 transitions. [2020-09-04 15:03:01,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-04 15:03:01,150 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 193 [2020-09-04 15:03:01,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:01,156 INFO L225 Difference]: With dead ends: 904 [2020-09-04 15:03:01,156 INFO L226 Difference]: Without dead ends: 901 [2020-09-04 15:03:01,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2020-09-04 15:03:01,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2020-09-04 15:03:01,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 543. [2020-09-04 15:03:01,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-04 15:03:01,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 589 transitions. [2020-09-04 15:03:01,357 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 589 transitions. Word has length 193 [2020-09-04 15:03:01,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:01,357 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 589 transitions. [2020-09-04 15:03:01,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:03:01,358 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 589 transitions. [2020-09-04 15:03:01,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-04 15:03:01,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:01,360 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:01,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 15:03:01,361 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:01,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:01,361 INFO L82 PathProgramCache]: Analyzing trace with hash 280021704, now seen corresponding path program 1 times [2020-09-04 15:03:01,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:01,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984683354] [2020-09-04 15:03:01,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:01,365 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:01,651 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:01,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:01,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:01,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:01,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:01,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:01,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:01,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:03:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:01,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:03:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:01,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:01,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:01,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:01,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:03:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:01,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:03:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:01,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:03:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:01,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-09-04 15:03:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:01,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-09-04 15:03:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:01,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:01,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984683354] [2020-09-04 15:03:01,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:01,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:03:01,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237377778] [2020-09-04 15:03:01,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:03:01,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:01,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:03:01,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:03:01,856 INFO L87 Difference]: Start difference. First operand 543 states and 589 transitions. Second operand 11 states. [2020-09-04 15:03:03,115 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:03,365 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:03:03,675 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:03:03,968 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:04,272 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:04,546 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:06,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:06,193 INFO L93 Difference]: Finished difference Result 1348 states and 1650 transitions. [2020-09-04 15:03:06,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 15:03:06,194 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 216 [2020-09-04 15:03:06,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:06,203 INFO L225 Difference]: With dead ends: 1348 [2020-09-04 15:03:06,203 INFO L226 Difference]: Without dead ends: 915 [2020-09-04 15:03:06,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-09-04 15:03:06,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2020-09-04 15:03:06,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 559. [2020-09-04 15:03:06,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-09-04 15:03:06,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 605 transitions. [2020-09-04 15:03:06,506 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 605 transitions. Word has length 216 [2020-09-04 15:03:06,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:06,507 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 605 transitions. [2020-09-04 15:03:06,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:03:06,507 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 605 transitions. [2020-09-04 15:03:06,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-04 15:03:06,511 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:06,511 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:06,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 15:03:06,512 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:06,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:06,512 INFO L82 PathProgramCache]: Analyzing trace with hash -801927029, now seen corresponding path program 1 times [2020-09-04 15:03:06,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:06,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602912731] [2020-09-04 15:03:06,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:06,516 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:06,875 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:06,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:06,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:06,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:06,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:06,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:06,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:06,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:03:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:06,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:03:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:07,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:07,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:07,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:07,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:03:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:07,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:03:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:07,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:03:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:07,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-09-04 15:03:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:07,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-09-04 15:03:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:07,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602912731] [2020-09-04 15:03:07,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:07,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 15:03:07,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021290422] [2020-09-04 15:03:07,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 15:03:07,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:07,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 15:03:07,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-04 15:03:07,104 INFO L87 Difference]: Start difference. First operand 559 states and 605 transitions. Second operand 8 states. [2020-09-04 15:03:07,577 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:08,190 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:11,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:11,734 INFO L93 Difference]: Finished difference Result 2007 states and 2519 transitions. [2020-09-04 15:03:11,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-04 15:03:11,734 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 216 [2020-09-04 15:03:11,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:11,746 INFO L225 Difference]: With dead ends: 2007 [2020-09-04 15:03:11,746 INFO L226 Difference]: Without dead ends: 1558 [2020-09-04 15:03:11,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2020-09-04 15:03:11,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2020-09-04 15:03:12,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 981. [2020-09-04 15:03:12,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 981 states. [2020-09-04 15:03:12,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1093 transitions. [2020-09-04 15:03:12,127 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1093 transitions. Word has length 216 [2020-09-04 15:03:12,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:12,128 INFO L479 AbstractCegarLoop]: Abstraction has 981 states and 1093 transitions. [2020-09-04 15:03:12,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 15:03:12,128 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1093 transitions. [2020-09-04 15:03:12,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-09-04 15:03:12,132 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:12,133 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:12,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 15:03:12,133 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:12,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:12,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1521198117, now seen corresponding path program 1 times [2020-09-04 15:03:12,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:12,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386336703] [2020-09-04 15:03:12,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:12,142 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:12,489 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:12,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:12,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:12,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:12,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:12,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:12,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-04 15:03:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:12,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:03:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:12,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:03:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:12,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:03:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:12,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:12,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:12,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:12,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:03:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:12,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:03:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:13,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:03:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:13,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-09-04 15:03:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:13,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-09-04 15:03:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:13,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:03:13,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386336703] [2020-09-04 15:03:13,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:13,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-09-04 15:03:13,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639677657] [2020-09-04 15:03:13,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-04 15:03:13,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:13,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-04 15:03:13,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-09-04 15:03:13,182 INFO L87 Difference]: Start difference. First operand 981 states and 1093 transitions. Second operand 21 states. [2020-09-04 15:03:13,849 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:14,294 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:14,612 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:03:14,925 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:15,239 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:03:15,544 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:16,595 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:18,212 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:18,555 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:03:18,961 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:19,317 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:19,679 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:03:20,018 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:03:20,342 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:20,688 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:03:21,046 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:21,472 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:03:21,850 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:22,207 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:03:22,916 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-09-04 15:03:23,681 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 190 [2020-09-04 15:03:24,288 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-09-04 15:03:27,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:27,723 INFO L93 Difference]: Finished difference Result 2374 states and 2860 transitions. [2020-09-04 15:03:27,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-09-04 15:03:27,724 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 221 [2020-09-04 15:03:27,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:27,733 INFO L225 Difference]: With dead ends: 2374 [2020-09-04 15:03:27,733 INFO L226 Difference]: Without dead ends: 1503 [2020-09-04 15:03:27,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=737, Invalid=3169, Unknown=0, NotChecked=0, Total=3906 [2020-09-04 15:03:27,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2020-09-04 15:03:28,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 938. [2020-09-04 15:03:28,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 938 states. [2020-09-04 15:03:28,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1031 transitions. [2020-09-04 15:03:28,123 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1031 transitions. Word has length 221 [2020-09-04 15:03:28,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:28,123 INFO L479 AbstractCegarLoop]: Abstraction has 938 states and 1031 transitions. [2020-09-04 15:03:28,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-04 15:03:28,124 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1031 transitions. [2020-09-04 15:03:28,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-09-04 15:03:28,126 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:28,127 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:03:28,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 15:03:28,127 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:28,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:28,128 INFO L82 PathProgramCache]: Analyzing trace with hash 296618272, now seen corresponding path program 1 times [2020-09-04 15:03:28,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:28,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952700587] [2020-09-04 15:03:28,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:28,168 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:03:28,244 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:03:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:03:28,323 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:03:28,630 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:03:28,630 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:03:28,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 15:03:28,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:03:28 BoogieIcfgContainer [2020-09-04 15:03:28,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:03:28,666 INFO L168 Benchmark]: Toolchain (without parser) took 61861.10 ms. Allocated memory was 143.7 MB in the beginning and 844.6 MB in the end (delta: 701.0 MB). Free memory was 101.6 MB in the beginning and 664.4 MB in the end (delta: -562.8 MB). Peak memory consumption was 138.2 MB. Max. memory is 7.1 GB. [2020-09-04 15:03:28,666 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 143.7 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 15:03:28,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.86 ms. Allocated memory was 143.7 MB in the beginning and 205.5 MB in the end (delta: 61.9 MB). Free memory was 101.4 MB in the beginning and 174.0 MB in the end (delta: -72.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-09-04 15:03:28,668 INFO L168 Benchmark]: Boogie Preprocessor took 97.22 ms. Allocated memory is still 205.5 MB. Free memory was 174.0 MB in the beginning and 169.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-09-04 15:03:28,669 INFO L168 Benchmark]: RCFGBuilder took 1291.38 ms. Allocated memory was 205.5 MB in the beginning and 236.5 MB in the end (delta: 30.9 MB). Free memory was 169.1 MB in the beginning and 176.4 MB in the end (delta: -7.4 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. [2020-09-04 15:03:28,669 INFO L168 Benchmark]: TraceAbstraction took 59774.02 ms. Allocated memory was 236.5 MB in the beginning and 844.6 MB in the end (delta: 608.2 MB). Free memory was 176.4 MB in the beginning and 664.4 MB in the end (delta: -488.0 MB). Peak memory consumption was 120.2 MB. Max. memory is 7.1 GB. [2020-09-04 15:03:28,673 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 143.7 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 691.86 ms. Allocated memory was 143.7 MB in the beginning and 205.5 MB in the end (delta: 61.9 MB). Free memory was 101.4 MB in the beginning and 174.0 MB in the end (delta: -72.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.22 ms. Allocated memory is still 205.5 MB. Free memory was 174.0 MB in the beginning and 169.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1291.38 ms. Allocated memory was 205.5 MB in the beginning and 236.5 MB in the end (delta: 30.9 MB). Free memory was 169.1 MB in the beginning and 176.4 MB in the end (delta: -7.4 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 59774.02 ms. Allocated memory was 236.5 MB in the beginning and 844.6 MB in the end (delta: 608.2 MB). Free memory was 176.4 MB in the beginning and 664.4 MB in the end (delta: -488.0 MB). Peak memory consumption was 120.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 764]: 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; [L413] int waterLevel = 1; [L414] int methaneLevelCritical = 0; [L581] int pumpRunning = 0; [L582] int systemActive = 1; [L833] int cleanupTimeShifts = 4; [L906] int retValue_acc ; [L907] int tmp ; [L911] FCALL select_helpers() [L912] FCALL select_features() [L913] CALL, EXPR valid_product() [L824] int retValue_acc ; [L827] retValue_acc = 1 [L828] return (retValue_acc); [L913] RET, EXPR valid_product() [L913] tmp = valid_product() [L915] COND TRUE \read(tmp) [L917] FCALL setup() [L918] CALL runTest() [L900] CALL test() [L511] int splverifierCounter ; [L512] int tmp ; [L513] int tmp___0 ; [L514] int tmp___1 ; [L515] int tmp___2 ; [L518] splverifierCounter = 0 [L520] COND TRUE 1 [L522] COND TRUE splverifierCounter < 4 [L528] tmp = __VERIFIER_nondet_int() [L530] COND TRUE \read(tmp) [L532] CALL waterRise() [L431] COND TRUE waterLevel < 2 [L432] waterLevel = waterLevel + 1 [L532] RET waterRise() [L538] tmp___0 = __VERIFIER_nondet_int() [L540] COND FALSE !(\read(tmp___0)) [L548] tmp___2 = __VERIFIER_nondet_int() [L550] COND TRUE \read(tmp___2) [L552] CALL startSystem() [L755] systemActive = 1 [L552] RET startSystem() [L565] CALL timeShift() [L589] COND FALSE !(\read(pumpRunning)) [L596] COND TRUE \read(systemActive) [L598] CALL processEnvironment() [L618] int tmp ; [L621] COND TRUE ! pumpRunning [L623] CALL, EXPR isHighWaterLevel() [L733] int retValue_acc ; [L734] int tmp ; [L735] int tmp___0 ; [L739] CALL, EXPR isHighWaterSensorDry() [L493] int retValue_acc ; [L496] COND FALSE !(waterLevel < 2) [L500] retValue_acc = 0 [L501] return (retValue_acc); [L739] RET, EXPR isHighWaterSensorDry() [L739] tmp = isHighWaterSensorDry() [L741] COND FALSE !(\read(tmp)) [L744] tmp___0 = 1 [L746] retValue_acc = tmp___0 [L747] return (retValue_acc); [L623] RET, EXPR isHighWaterLevel() [L623] tmp = isHighWaterLevel() [L625] COND TRUE \read(tmp) [L627] CALL activatePump() [L652] int tmp ; [L656] CALL, EXPR isMethaneAlarm() [L677] int retValue_acc ; [L681] CALL, EXPR isMethaneLevelCritical() [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); [L681] RET, EXPR isMethaneLevelCritical() [L681] retValue_acc = isMethaneLevelCritical() [L683] return (retValue_acc); [L656] RET, EXPR isMethaneAlarm() [L656] tmp = isMethaneAlarm() [L658] COND FALSE !(\read(tmp)) [L662] CALL activatePump__wrappee__highWaterSensor() [L646] pumpRunning = 1 [L662] RET activatePump__wrappee__highWaterSensor() [L627] RET activatePump() [L598] RET processEnvironment() [L604] CALL __utac_acc__Specification1_spec__1() [L770] int tmp ; [L771] int tmp___0 ; [L775] CALL, EXPR isMethaneLevelCritical() [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); [L775] RET, EXPR isMethaneLevelCritical() [L775] tmp = isMethaneLevelCritical() [L777] COND FALSE !(\read(tmp)) [L604] RET __utac_acc__Specification1_spec__1() [L565] RET timeShift() [L520] COND TRUE 1 [L522] COND TRUE splverifierCounter < 4 [L528] tmp = __VERIFIER_nondet_int() [L530] COND FALSE !(\read(tmp)) [L538] tmp___0 = __VERIFIER_nondet_int() [L540] COND TRUE \read(tmp___0) [L542] CALL changeMethaneLevel() [L443] COND FALSE !(\read(methaneLevelCritical)) [L446] methaneLevelCritical = 1 [L542] RET changeMethaneLevel() [L548] tmp___2 = __VERIFIER_nondet_int() [L550] COND TRUE \read(tmp___2) [L552] CALL startSystem() [L755] systemActive = 1 [L552] RET startSystem() [L565] CALL timeShift() [L589] COND TRUE \read(pumpRunning) [L591] CALL lowerWaterLevel() [L419] COND TRUE waterLevel > 0 [L420] waterLevel = waterLevel - 1 [L591] RET lowerWaterLevel() [L596] COND TRUE \read(systemActive) [L598] CALL processEnvironment() [L618] int tmp ; [L621] COND FALSE !(! pumpRunning) [L636] FCALL processEnvironment__wrappee__base() [L598] RET processEnvironment() [L604] CALL __utac_acc__Specification1_spec__1() [L770] int tmp ; [L771] int tmp___0 ; [L775] CALL, EXPR isMethaneLevelCritical() [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); [L775] RET, EXPR isMethaneLevelCritical() [L775] tmp = isMethaneLevelCritical() [L777] COND TRUE \read(tmp) [L779] CALL, EXPR isPumpRunning() [L688] int retValue_acc ; [L691] retValue_acc = pumpRunning [L692] return (retValue_acc); [L779] RET, EXPR isPumpRunning() [L779] tmp___0 = isPumpRunning() [L781] COND TRUE \read(tmp___0) [L783] CALL __automaton_fail() [L764] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 619 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 59.6s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 50.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2535 SDtfs, 6819 SDslu, 6325 SDs, 0 SdLazy, 12763 SolverSat, 2163 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 509 GetRequests, 299 SyntacticMatches, 3 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1464 ImplicationChecksByTransitivity, 24.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=981occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 10 MinimizatonAttempts, 2469 StatesRemovedByMinimization, 10 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...