/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_spec4_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:33:44,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:33:44,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:33:44,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:33:44,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:33:44,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:33:44,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:33:44,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:33:44,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:33:44,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:33:44,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:33:44,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:33:44,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:33:44,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:33:44,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:33:44,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:33:44,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:33:44,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:33:44,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:33:44,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:33:44,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:33:44,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:33:44,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:33:44,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:33:44,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:33:44,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:33:44,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:33:44,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:33:44,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:33:44,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:33:44,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:33:44,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:33:44,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:33:44,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:33:44,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:33:44,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:33:44,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:33:44,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:33:44,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:33:44,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:33:44,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:33:44,620 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 15:33:44,632 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:33:44,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:33:44,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:33:44,634 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:33:44,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:33:44,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:33:44,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:33:44,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:33:44,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:33:44,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:33:44,636 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:33:44,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:33:44,636 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:33:44,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:33:44,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:33:44,637 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:33:44,637 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:33:44,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:33:44,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:33:44,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:33:44,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:33:44,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:33:44,638 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:33:45,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:33:45,108 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:33:45,112 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:33:45,114 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:33:45,115 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:33:45,116 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product40.cil.c [2020-09-04 15:33:45,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa47d4269/bcaa1b5813c84b848a44d730ea2d7251/FLAG08998a401 [2020-09-04 15:33:45,841 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:33:45,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product40.cil.c [2020-09-04 15:33:45,860 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa47d4269/bcaa1b5813c84b848a44d730ea2d7251/FLAG08998a401 [2020-09-04 15:33:46,081 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa47d4269/bcaa1b5813c84b848a44d730ea2d7251 [2020-09-04 15:33:46,096 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:33:46,100 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:33:46,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:33:46,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:33:46,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:33:46,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:33:46" (1/1) ... [2020-09-04 15:33:46,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22589b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:46, skipping insertion in model container [2020-09-04 15:33:46,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:33:46" (1/1) ... [2020-09-04 15:33:46,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:33:46,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:33:46,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:33:46,717 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:33:46,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:33:46,856 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:33:46,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:46 WrapperNode [2020-09-04 15:33:46,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:33:46,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:33:46,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:33:46,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:33:46,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:46" (1/1) ... [2020-09-04 15:33:46,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:46" (1/1) ... [2020-09-04 15:33:46,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:46" (1/1) ... [2020-09-04 15:33:46,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:46" (1/1) ... [2020-09-04 15:33:46,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:46" (1/1) ... [2020-09-04 15:33:46,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:46" (1/1) ... [2020-09-04 15:33:46,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:46" (1/1) ... [2020-09-04 15:33:46,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:33:46,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:33:46,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:33:46,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:33:46,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:46" (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 15:33:47,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:33:47,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:33:47,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:33:47,044 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:33:47,044 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:33:47,045 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:33:47,045 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-04 15:33:47,045 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:33:47,045 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:33:47,045 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:33:47,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:33:47,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:33:47,047 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:33:47,047 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:33:47,047 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-04 15:33:47,047 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-04 15:33:47,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:33:47,048 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:33:47,049 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:33:47,049 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:33:47,050 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:33:47,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:33:47,053 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:33:47,053 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:33:47,053 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:33:47,053 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:33:47,053 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:33:47,053 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:33:47,054 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:33:47,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:33:47,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:33:47,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:33:47,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:33:47,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:33:47,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:33:47,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-04 15:33:47,055 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:33:47,056 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:33:47,056 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:33:47,056 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:33:47,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:33:47,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:33:47,056 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:33:47,057 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:33:47,057 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:33:47,057 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-04 15:33:47,057 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-04 15:33:47,058 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:33:47,058 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:33:47,058 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:33:47,058 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:33:47,058 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:33:47,058 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:33:47,059 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:33:47,059 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:33:47,059 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:33:47,060 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:33:47,060 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:33:47,060 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-04 15:33:47,061 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:33:47,061 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:33:47,061 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:33:47,061 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-04 15:33:47,061 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:33:47,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:33:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:33:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:33:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:33:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:33:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:33:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:33:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:33:47,063 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:33:47,063 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:33:47,063 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:33:47,063 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:33:47,064 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:33:47,064 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:33:47,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:33:47,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:33:47,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:33:47,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:33:47,065 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:33:47,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:33:47,066 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:33:47,066 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:33:47,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:33:47,067 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:33:47,068 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:33:47,068 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:33:47,068 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:33:47,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:33:47,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:33:47,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:33:48,241 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:33:48,241 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:33:48,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:33:48 BoogieIcfgContainer [2020-09-04 15:33:48,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:33:48,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:33:48,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:33:48,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:33:48,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:33:46" (1/3) ... [2020-09-04 15:33:48,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50875773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:33:48, skipping insertion in model container [2020-09-04 15:33:48,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:33:46" (2/3) ... [2020-09-04 15:33:48,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50875773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:33:48, skipping insertion in model container [2020-09-04 15:33:48,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:33:48" (3/3) ... [2020-09-04 15:33:48,257 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product40.cil.c [2020-09-04 15:33:48,268 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:33:48,278 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:33:48,300 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:33:48,327 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:33:48,327 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:33:48,328 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:33:48,328 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:33:48,328 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:33:48,328 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:33:48,328 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:33:48,328 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:33:48,352 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states. [2020-09-04 15:33:48,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-04 15:33:48,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:33:48,378 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 15:33:48,378 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:33:48,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:33:48,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1162021346, now seen corresponding path program 1 times [2020-09-04 15:33:48,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:33:48,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255313310] [2020-09-04 15:33:48,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:33:48,469 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:33:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:49,181 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:33:49,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:33:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:49,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:33:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:49,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:33:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:49,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:33:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:49,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:33:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:49,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:33:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:49,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:33:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:49,381 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 15:33:49,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255313310] [2020-09-04 15:33:49,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:33:49,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:33:49,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040831822] [2020-09-04 15:33:49,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:33:49,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:33:49,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:33:49,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:33:49,430 INFO L87 Difference]: Start difference. First operand 316 states. Second operand 3 states. [2020-09-04 15:33:50,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:33:50,865 INFO L93 Difference]: Finished difference Result 500 states and 595 transitions. [2020-09-04 15:33:50,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:33:50,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-04 15:33:50,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:33:50,888 INFO L225 Difference]: With dead ends: 500 [2020-09-04 15:33:50,888 INFO L226 Difference]: Without dead ends: 309 [2020-09-04 15:33:50,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:33:50,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-09-04 15:33:51,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 265. [2020-09-04 15:33:51,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-09-04 15:33:51,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 288 transitions. [2020-09-04 15:33:51,059 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 288 transitions. Word has length 142 [2020-09-04 15:33:51,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:33:51,060 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 288 transitions. [2020-09-04 15:33:51,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:33:51,060 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 288 transitions. [2020-09-04 15:33:51,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-04 15:33:51,075 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:33:51,076 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 15:33:51,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:33:51,077 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:33:51,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:33:51,078 INFO L82 PathProgramCache]: Analyzing trace with hash -509379685, now seen corresponding path program 1 times [2020-09-04 15:33:51,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:33:51,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586211688] [2020-09-04 15:33:51,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:33:51,084 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:33:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:51,588 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:33:51,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:33:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:51,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:33:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:51,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:33:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:51,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:33:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:51,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:33:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:51,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:33:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:51,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:33:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:51,674 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 15:33:51,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586211688] [2020-09-04 15:33:51,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:33:51,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:33:51,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978361350] [2020-09-04 15:33:51,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:33:51,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:33:51,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:33:51,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:33:51,677 INFO L87 Difference]: Start difference. First operand 265 states and 288 transitions. Second operand 4 states. [2020-09-04 15:33:52,327 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:33:53,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:33:53,471 INFO L93 Difference]: Finished difference Result 407 states and 458 transitions. [2020-09-04 15:33:53,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:33:53,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-04 15:33:53,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:33:53,477 INFO L225 Difference]: With dead ends: 407 [2020-09-04 15:33:53,477 INFO L226 Difference]: Without dead ends: 292 [2020-09-04 15:33:53,483 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 15:33:53,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-09-04 15:33:53,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 255. [2020-09-04 15:33:53,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-09-04 15:33:53,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 275 transitions. [2020-09-04 15:33:53,581 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 275 transitions. Word has length 143 [2020-09-04 15:33:53,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:33:53,582 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 275 transitions. [2020-09-04 15:33:53,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:33:53,582 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 275 transitions. [2020-09-04 15:33:53,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-04 15:33:53,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:33:53,585 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 15:33:53,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:33:53,585 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:33:53,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:33:53,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1147925299, now seen corresponding path program 1 times [2020-09-04 15:33:53,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:33:53,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033810474] [2020-09-04 15:33:53,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:33:53,589 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:33:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:53,927 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:33:53,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:33:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:53,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:33:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:53,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:33:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:53,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:33:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:54,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:33:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:54,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:33:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:54,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:33:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:54,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:33:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:33:54,075 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 15:33:54,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033810474] [2020-09-04 15:33:54,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:33:54,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:33:54,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512085440] [2020-09-04 15:33:54,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:33:54,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:33:54,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:33:54,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:33:54,079 INFO L87 Difference]: Start difference. First operand 255 states and 275 transitions. Second operand 10 states. [2020-09-04 15:33:54,605 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:33:54,981 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:33:55,264 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:33:55,581 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:33:55,923 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:33:56,212 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:33:57,194 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:33:59,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:33:59,917 INFO L93 Difference]: Finished difference Result 700 states and 815 transitions. [2020-09-04 15:33:59,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:33:59,918 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-09-04 15:33:59,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:33:59,927 INFO L225 Difference]: With dead ends: 700 [2020-09-04 15:33:59,927 INFO L226 Difference]: Without dead ends: 555 [2020-09-04 15:33:59,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-09-04 15:33:59,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-04 15:34:00,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 460. [2020-09-04 15:34:00,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-09-04 15:34:00,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 514 transitions. [2020-09-04 15:34:00,089 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 514 transitions. Word has length 156 [2020-09-04 15:34:00,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:00,089 INFO L479 AbstractCegarLoop]: Abstraction has 460 states and 514 transitions. [2020-09-04 15:34:00,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:34:00,090 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 514 transitions. [2020-09-04 15:34:00,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-04 15:34:00,093 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:00,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:34:00,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:34:00,093 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:00,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:00,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1964515528, now seen corresponding path program 1 times [2020-09-04 15:34:00,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:00,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236285073] [2020-09-04 15:34:00,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:00,097 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:00,567 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:00,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:00,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:00,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:00,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:00,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:00,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:34:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:00,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-04 15:34:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:00,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-04 15:34:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:00,813 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 15:34:00,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236285073] [2020-09-04 15:34:00,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:00,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 15:34:00,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508799022] [2020-09-04 15:34:00,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 15:34:00,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:00,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 15:34:00,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-04 15:34:00,817 INFO L87 Difference]: Start difference. First operand 460 states and 514 transitions. Second operand 14 states. [2020-09-04 15:34:01,389 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:01,724 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:02,038 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:34:02,380 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:02,727 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:03,033 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:03,798 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:05,083 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:05,446 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:05,934 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:06,328 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:06,688 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:07,030 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:34:07,350 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:34:07,705 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:08,002 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:08,452 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:08,911 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:34:09,368 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:09,794 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:11,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:11,788 INFO L93 Difference]: Finished difference Result 1596 states and 2003 transitions. [2020-09-04 15:34:11,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-04 15:34:11,789 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 161 [2020-09-04 15:34:11,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:11,804 INFO L225 Difference]: With dead ends: 1596 [2020-09-04 15:34:11,804 INFO L226 Difference]: Without dead ends: 1246 [2020-09-04 15:34:11,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2020-09-04 15:34:11,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2020-09-04 15:34:12,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1107. [2020-09-04 15:34:12,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1107 states. [2020-09-04 15:34:12,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1307 transitions. [2020-09-04 15:34:12,207 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1307 transitions. Word has length 161 [2020-09-04 15:34:12,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:12,208 INFO L479 AbstractCegarLoop]: Abstraction has 1107 states and 1307 transitions. [2020-09-04 15:34:12,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 15:34:12,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1307 transitions. [2020-09-04 15:34:12,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-04 15:34:12,212 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:12,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:34:12,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:34:12,213 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:12,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:12,214 INFO L82 PathProgramCache]: Analyzing trace with hash -771315303, now seen corresponding path program 1 times [2020-09-04 15:34:12,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:12,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451209714] [2020-09-04 15:34:12,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:12,217 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:12,597 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:12,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:12,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:12,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:12,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:12,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:12,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:34:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:12,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 15:34:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:12,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:34:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:12,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-04 15:34:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:12,839 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 15:34:12,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451209714] [2020-09-04 15:34:12,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:12,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 15:34:12,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431845319] [2020-09-04 15:34:12,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 15:34:12,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:12,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 15:34:12,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 15:34:12,842 INFO L87 Difference]: Start difference. First operand 1107 states and 1307 transitions. Second operand 6 states. [2020-09-04 15:34:13,493 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:15,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:15,821 INFO L93 Difference]: Finished difference Result 2568 states and 3220 transitions. [2020-09-04 15:34:15,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 15:34:15,822 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2020-09-04 15:34:15,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:15,833 INFO L225 Difference]: With dead ends: 2568 [2020-09-04 15:34:15,833 INFO L226 Difference]: Without dead ends: 1571 [2020-09-04 15:34:15,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:34:15,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2020-09-04 15:34:16,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1444. [2020-09-04 15:34:16,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-09-04 15:34:16,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1700 transitions. [2020-09-04 15:34:16,326 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1700 transitions. Word has length 166 [2020-09-04 15:34:16,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:16,327 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1700 transitions. [2020-09-04 15:34:16,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 15:34:16,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1700 transitions. [2020-09-04 15:34:16,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-04 15:34:16,332 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:16,333 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-04 15:34:16,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:34:16,333 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:16,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:16,334 INFO L82 PathProgramCache]: Analyzing trace with hash -413389860, now seen corresponding path program 1 times [2020-09-04 15:34:16,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:16,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028715270] [2020-09-04 15:34:16,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:16,376 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:16,730 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:16,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:16,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:16,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:16,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:16,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:16,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-04 15:34:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:16,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 15:34:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:16,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-04 15:34:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:16,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:16,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:16,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-04 15:34:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:16,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 15:34:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:16,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-09-04 15:34:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:16,954 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 15:34:16,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028715270] [2020-09-04 15:34:16,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:16,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:34:16,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675032436] [2020-09-04 15:34:16,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:34:16,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:16,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:34:16,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:34:16,958 INFO L87 Difference]: Start difference. First operand 1444 states and 1700 transitions. Second operand 11 states. [2020-09-04 15:34:17,519 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:19,619 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:19,862 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:20,202 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:20,526 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:20,869 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:21,677 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:21,977 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:22,366 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:22,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:22,901 INFO L93 Difference]: Finished difference Result 1634 states and 1984 transitions. [2020-09-04 15:34:22,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 15:34:22,901 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 209 [2020-09-04 15:34:22,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:22,912 INFO L225 Difference]: With dead ends: 1634 [2020-09-04 15:34:22,912 INFO L226 Difference]: Without dead ends: 1631 [2020-09-04 15:34:22,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2020-09-04 15:34:22,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2020-09-04 15:34:23,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1453. [2020-09-04 15:34:23,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1453 states. [2020-09-04 15:34:23,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 1708 transitions. [2020-09-04 15:34:23,593 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 1708 transitions. Word has length 209 [2020-09-04 15:34:23,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:23,593 INFO L479 AbstractCegarLoop]: Abstraction has 1453 states and 1708 transitions. [2020-09-04 15:34:23,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:34:23,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 1708 transitions. [2020-09-04 15:34:23,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-09-04 15:34:23,602 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:23,602 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-09-04 15:34:23,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:34:23,603 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:23,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:23,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1741049063, now seen corresponding path program 1 times [2020-09-04 15:34:23,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:23,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047659008] [2020-09-04 15:34:23,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:23,623 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:24,021 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:24,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:24,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:24,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:24,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:24,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:24,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-04 15:34:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:24,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:34:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:24,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 15:34:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:24,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:24,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:24,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:24,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:34:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:24,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:34:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:24,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 15:34:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:24,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:24,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-09-04 15:34:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:24,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-09-04 15:34:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:24,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-09-04 15:34:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:24,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:24,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:24,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:34:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:24,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:34:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:24,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-09-04 15:34:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:24,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 15:34:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:24,583 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 15:34:24,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047659008] [2020-09-04 15:34:24,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:24,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-04 15:34:24,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134106493] [2020-09-04 15:34:24,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 15:34:24,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:24,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 15:34:24,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-09-04 15:34:24,587 INFO L87 Difference]: Start difference. First operand 1453 states and 1708 transitions. Second operand 15 states. [2020-09-04 15:34:25,133 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:26,050 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:27,409 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:27,772 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:34:28,119 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-04 15:34:28,498 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:28,819 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:29,224 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:34:29,532 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:34:29,864 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-04 15:34:30,160 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:30,512 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:30,900 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:34:31,253 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:33,095 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:33,407 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:34:33,722 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:34:34,053 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:34,389 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:34,677 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:36,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:36,397 INFO L93 Difference]: Finished difference Result 3273 states and 4207 transitions. [2020-09-04 15:34:36,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-09-04 15:34:36,398 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 280 [2020-09-04 15:34:36,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:36,410 INFO L225 Difference]: With dead ends: 3273 [2020-09-04 15:34:36,411 INFO L226 Difference]: Without dead ends: 1930 [2020-09-04 15:34:36,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=527, Invalid=2229, Unknown=0, NotChecked=0, Total=2756 [2020-09-04 15:34:36,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2020-09-04 15:34:36,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1411. [2020-09-04 15:34:36,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1411 states. [2020-09-04 15:34:36,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1644 transitions. [2020-09-04 15:34:36,997 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1644 transitions. Word has length 280 [2020-09-04 15:34:36,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:36,998 INFO L479 AbstractCegarLoop]: Abstraction has 1411 states and 1644 transitions. [2020-09-04 15:34:36,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 15:34:36,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1644 transitions. [2020-09-04 15:34:37,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-04 15:34:37,010 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:37,010 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-04 15:34:37,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 15:34:37,011 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:37,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:37,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1116665167, now seen corresponding path program 1 times [2020-09-04 15:34:37,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:37,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869308438] [2020-09-04 15:34:37,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:37,030 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:37,371 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:37,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:37,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:37,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:37,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:37,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:37,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:34:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:37,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:34:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:37,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:37,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:37,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:37,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:34:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:37,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:34:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:37,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 15:34:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:37,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:37,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-04 15:34:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:37,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-09-04 15:34:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:37,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-09-04 15:34:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:37,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:37,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:34:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:37,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-04 15:34:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:37,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:37,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-09-04 15:34:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:37,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-09-04 15:34:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:37,728 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 15:34:37,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869308438] [2020-09-04 15:34:37,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:37,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-04 15:34:37,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518465310] [2020-09-04 15:34:37,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 15:34:37,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:37,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 15:34:37,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-09-04 15:34:37,730 INFO L87 Difference]: Start difference. First operand 1411 states and 1644 transitions. Second operand 15 states. [2020-09-04 15:34:38,390 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:38,687 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:34:38,985 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:39,278 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:39,556 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:40,622 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:40,927 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:41,242 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:41,568 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:41,865 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:43,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:43,757 INFO L93 Difference]: Finished difference Result 2761 states and 3370 transitions. [2020-09-04 15:34:43,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 15:34:43,758 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 268 [2020-09-04 15:34:43,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:43,767 INFO L225 Difference]: With dead ends: 2761 [2020-09-04 15:34:43,767 INFO L226 Difference]: Without dead ends: 1460 [2020-09-04 15:34:43,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-09-04 15:34:43,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2020-09-04 15:34:44,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1228. [2020-09-04 15:34:44,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1228 states. [2020-09-04 15:34:44,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1415 transitions. [2020-09-04 15:34:44,303 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1415 transitions. Word has length 268 [2020-09-04 15:34:44,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:44,303 INFO L479 AbstractCegarLoop]: Abstraction has 1228 states and 1415 transitions. [2020-09-04 15:34:44,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 15:34:44,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1415 transitions. [2020-09-04 15:34:44,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-09-04 15:34:44,312 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:44,312 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-04 15:34:44,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 15:34:44,312 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:44,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:44,313 INFO L82 PathProgramCache]: Analyzing trace with hash 2031737990, now seen corresponding path program 1 times [2020-09-04 15:34:44,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:44,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333662508] [2020-09-04 15:34:44,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:44,327 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:44,773 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:44,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:44,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:44,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:44,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:44,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:44,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-04 15:34:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:44,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:34:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:44,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 15:34:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:44,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:44,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:44,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:34:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:34:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 15:34:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 15:34:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-09-04 15:34:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-09-04 15:34:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:34:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-04 15:34:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-09-04 15:34:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-09-04 15:34:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,171 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 15:34:45,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333662508] [2020-09-04 15:34:45,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:45,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 15:34:45,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977353883] [2020-09-04 15:34:45,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 15:34:45,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:45,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 15:34:45,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-09-04 15:34:45,177 INFO L87 Difference]: Start difference. First operand 1228 states and 1415 transitions. Second operand 14 states. [2020-09-04 15:34:45,714 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:46,544 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:47,400 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:47,726 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:48,085 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:48,422 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:48,735 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:49,054 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:49,379 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:49,819 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:50,197 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:34:50,541 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:53,393 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:53,784 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:55,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:55,232 INFO L93 Difference]: Finished difference Result 3204 states and 4072 transitions. [2020-09-04 15:34:55,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-04 15:34:55,233 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 273 [2020-09-04 15:34:55,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:55,247 INFO L225 Difference]: With dead ends: 3204 [2020-09-04 15:34:55,247 INFO L226 Difference]: Without dead ends: 2316 [2020-09-04 15:34:55,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 62 SyntacticMatches, 6 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=617, Invalid=1639, Unknown=0, NotChecked=0, Total=2256 [2020-09-04 15:34:55,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2020-09-04 15:34:56,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 1659. [2020-09-04 15:34:56,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1659 states. [2020-09-04 15:34:56,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 1944 transitions. [2020-09-04 15:34:56,031 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 1944 transitions. Word has length 273 [2020-09-04 15:34:56,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:56,033 INFO L479 AbstractCegarLoop]: Abstraction has 1659 states and 1944 transitions. [2020-09-04 15:34:56,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 15:34:56,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 1944 transitions. [2020-09-04 15:34:56,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-09-04 15:34:56,039 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:56,040 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-04 15:34:56,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 15:34:56,040 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:56,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:56,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1002566142, now seen corresponding path program 2 times [2020-09-04 15:34:56,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:56,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247576896] [2020-09-04 15:34:56,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:56,056 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:34:56,149 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:34:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:34:56,258 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:34:56,648 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:34:56,649 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:34:56,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 15:34:56,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:34:56 BoogieIcfgContainer [2020-09-04 15:34:56,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:34:56,689 INFO L168 Benchmark]: Toolchain (without parser) took 70589.62 ms. Allocated memory was 145.2 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 101.5 MB in the beginning and 127.0 MB in the end (delta: -25.6 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2020-09-04 15:34:56,690 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 15:34:56,692 INFO L168 Benchmark]: CACSL2BoogieTranslator took 755.34 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 101.0 MB in the beginning and 171.2 MB in the end (delta: -70.2 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-09-04 15:34:56,693 INFO L168 Benchmark]: Boogie Preprocessor took 100.00 ms. Allocated memory is still 202.4 MB. Free memory was 171.2 MB in the beginning and 165.2 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 7.1 GB. [2020-09-04 15:34:56,694 INFO L168 Benchmark]: RCFGBuilder took 1290.18 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 164.5 MB in the beginning and 175.2 MB in the end (delta: -10.8 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2020-09-04 15:34:56,699 INFO L168 Benchmark]: TraceAbstraction took 68438.13 ms. Allocated memory was 234.9 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 173.8 MB in the beginning and 127.0 MB in the end (delta: 46.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2020-09-04 15:34:56,705 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 755.34 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 101.0 MB in the beginning and 171.2 MB in the end (delta: -70.2 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.00 ms. Allocated memory is still 202.4 MB. Free memory was 171.2 MB in the beginning and 165.2 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1290.18 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 164.5 MB in the beginning and 175.2 MB in the end (delta: -10.8 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 68438.13 ms. Allocated memory was 234.9 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 173.8 MB in the beginning and 127.0 MB in the end (delta: 46.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 329]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L123] int pumpRunning = 0; [L124] int systemActive = 1; [L334] int cleanupTimeShifts = 4; [L434] int waterLevel = 1; [L435] int methaneLevelCritical = 0; [L697] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L410] int retValue_acc ; [L411] int tmp ; [L415] FCALL select_helpers() [L416] FCALL select_features() [L417] CALL, EXPR valid_product() [L946] int retValue_acc ; [L949] retValue_acc = 1 [L950] return (retValue_acc); [L417] RET, EXPR valid_product() [L417] tmp = valid_product() [L419] COND TRUE \read(tmp) [L421] FCALL setup() [L422] CALL runTest() [L401] CALL test() [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND TRUE \read(tmp) [L68] CALL waterRise() [L452] COND TRUE waterLevel < 2 [L453] waterLevel = waterLevel + 1 [L68] RET waterRise() [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) [L88] CALL startSystem() [L320] systemActive = 1 [L88] RET startSystem() [L103] CALL timeShift() [L131] COND FALSE !(\read(pumpRunning)) [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L186] int tmp ; [L189] COND FALSE !(\read(pumpRunning)) [L204] CALL processEnvironment__wrappee__highWaterSensor() [L160] int tmp ; [L163] COND TRUE ! pumpRunning [L165] CALL, EXPR isHighWaterLevel() [L283] int retValue_acc ; [L284] int tmp ; [L285] int tmp___0 ; [L289] CALL, EXPR isHighWaterSensorDry() [L514] int retValue_acc ; [L517] COND FALSE !(waterLevel < 2) [L521] retValue_acc = 0 [L522] return (retValue_acc); [L289] RET, EXPR isHighWaterSensorDry() [L289] tmp = isHighWaterSensorDry() [L291] COND FALSE !(\read(tmp)) [L294] tmp___0 = 1 [L296] retValue_acc = tmp___0 [L297] return (retValue_acc); [L165] RET, EXPR isHighWaterLevel() [L165] tmp = isHighWaterLevel() [L167] COND TRUE \read(tmp) [L169] CALL activatePump() [L214] pumpRunning = 1 [L169] RET activatePump() [L204] RET processEnvironment__wrappee__highWaterSensor() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L895] int tmp ; [L896] int tmp___0 ; [L900] CALL, EXPR getWaterLevel() [L505] int retValue_acc ; [L508] retValue_acc = waterLevel [L509] return (retValue_acc); [L900] RET, EXPR getWaterLevel() [L900] tmp = getWaterLevel() [L902] COND FALSE !(tmp == 0) [L146] RET __utac_acc__Specification4_spec__1() [L103] RET timeShift() [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) [L88] CALL startSystem() [L320] systemActive = 1 [L88] RET startSystem() [L103] CALL timeShift() [L131] COND TRUE \read(pumpRunning) [L133] CALL lowerWaterLevel() [L440] COND TRUE waterLevel > 0 [L441] waterLevel = waterLevel - 1 [L133] RET lowerWaterLevel() [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L186] int tmp ; [L189] COND TRUE \read(pumpRunning) [L191] CALL, EXPR isMethaneAlarm() [L227] int retValue_acc ; [L231] CALL, EXPR isMethaneLevelCritical() [L473] int retValue_acc ; [L476] retValue_acc = methaneLevelCritical [L477] return (retValue_acc); [L231] RET, EXPR isMethaneLevelCritical() [L231] retValue_acc = isMethaneLevelCritical() [L233] return (retValue_acc); [L191] RET, EXPR isMethaneAlarm() [L191] tmp = isMethaneAlarm() [L193] COND FALSE !(\read(tmp)) [L199] CALL processEnvironment__wrappee__highWaterSensor() [L160] int tmp ; [L163] COND FALSE !(! pumpRunning) [L178] FCALL processEnvironment__wrappee__base() [L199] RET processEnvironment__wrappee__highWaterSensor() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L895] int tmp ; [L896] int tmp___0 ; [L900] CALL, EXPR getWaterLevel() [L505] int retValue_acc ; [L508] retValue_acc = waterLevel [L509] return (retValue_acc); [L900] RET, EXPR getWaterLevel() [L900] tmp = getWaterLevel() [L902] COND FALSE !(tmp == 0) [L146] RET __utac_acc__Specification4_spec__1() [L103] RET timeShift() [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) [L88] CALL startSystem() [L320] systemActive = 1 [L88] RET startSystem() [L103] CALL timeShift() [L131] COND TRUE \read(pumpRunning) [L133] CALL lowerWaterLevel() [L440] COND TRUE waterLevel > 0 [L441] waterLevel = waterLevel - 1 [L133] RET lowerWaterLevel() [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L186] int tmp ; [L189] COND TRUE \read(pumpRunning) [L191] CALL, EXPR isMethaneAlarm() [L227] int retValue_acc ; [L231] CALL, EXPR isMethaneLevelCritical() [L473] int retValue_acc ; [L476] retValue_acc = methaneLevelCritical [L477] return (retValue_acc); [L231] RET, EXPR isMethaneLevelCritical() [L231] retValue_acc = isMethaneLevelCritical() [L233] return (retValue_acc); [L191] RET, EXPR isMethaneAlarm() [L191] tmp = isMethaneAlarm() [L193] COND FALSE !(\read(tmp)) [L199] CALL processEnvironment__wrappee__highWaterSensor() [L160] int tmp ; [L163] COND FALSE !(! pumpRunning) [L178] FCALL processEnvironment__wrappee__base() [L199] RET processEnvironment__wrappee__highWaterSensor() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L895] int tmp ; [L896] int tmp___0 ; [L900] CALL, EXPR getWaterLevel() [L505] int retValue_acc ; [L508] retValue_acc = waterLevel [L509] return (retValue_acc); [L900] RET, EXPR getWaterLevel() [L900] tmp = getWaterLevel() [L902] COND TRUE tmp == 0 [L904] CALL, EXPR isPumpRunning() [L238] int retValue_acc ; [L241] retValue_acc = pumpRunning [L242] return (retValue_acc); [L904] RET, EXPR isPumpRunning() [L904] tmp___0 = isPumpRunning() [L906] COND TRUE \read(tmp___0) [L908] CALL __automaton_fail() [L329] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 628 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 68.3s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 57.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2361 SDtfs, 7593 SDslu, 6108 SDs, 0 SdLazy, 13769 SolverSat, 2955 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 525 GetRequests, 308 SyntacticMatches, 7 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1797 ImplicationChecksByTransitivity, 27.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1659occurred 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: 3.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 2028 StatesRemovedByMinimization, 9 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...