/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 17:54:37,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 17:54:37,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 17:54:37,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 17:54:37,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 17:54:37,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 17:54:37,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 17:54:37,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 17:54:37,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 17:54:37,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 17:54:37,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 17:54:37,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 17:54:37,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 17:54:37,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 17:54:37,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 17:54:37,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 17:54:37,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 17:54:37,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 17:54:37,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 17:54:38,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 17:54:38,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 17:54:38,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 17:54:38,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 17:54:38,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 17:54:38,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 17:54:38,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 17:54:38,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 17:54:38,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 17:54:38,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 17:54:38,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 17:54:38,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 17:54:38,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 17:54:38,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 17:54:38,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 17:54:38,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 17:54:38,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 17:54:38,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 17:54:38,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 17:54:38,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 17:54:38,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 17:54:38,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 17:54:38,033 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 17:54:38,045 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 17:54:38,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 17:54:38,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 17:54:38,048 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 17:54:38,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 17:54:38,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 17:54:38,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 17:54:38,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 17:54:38,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 17:54:38,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 17:54:38,050 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 17:54:38,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 17:54:38,050 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 17:54:38,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 17:54:38,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 17:54:38,051 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 17:54:38,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 17:54:38,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 17:54:38,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 17:54:38,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 17:54:38,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 17:54:38,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 17:54:38,053 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 17:54:38,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 17:54:38,377 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 17:54:38,382 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 17:54:38,384 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 17:54:38,384 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 17:54:38,385 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c [2020-08-22 17:54:38,451 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef49f91ef/80d2d31c443f4e2396119cded534c98d/FLAGa5a390547 [2020-08-22 17:54:38,996 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 17:54:38,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c [2020-08-22 17:54:39,010 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef49f91ef/80d2d31c443f4e2396119cded534c98d/FLAGa5a390547 [2020-08-22 17:54:39,285 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef49f91ef/80d2d31c443f4e2396119cded534c98d [2020-08-22 17:54:39,294 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 17:54:39,296 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 17:54:39,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 17:54:39,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 17:54:39,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 17:54:39,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:54:39" (1/1) ... [2020-08-22 17:54:39,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49e58ebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:39, skipping insertion in model container [2020-08-22 17:54:39,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:54:39" (1/1) ... [2020-08-22 17:54:39,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 17:54:39,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 17:54:39,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 17:54:39,825 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 17:54:39,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 17:54:39,935 INFO L208 MainTranslator]: Completed translation [2020-08-22 17:54:39,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:39 WrapperNode [2020-08-22 17:54:39,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 17:54:39,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 17:54:39,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 17:54:39,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 17:54:39,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:39" (1/1) ... [2020-08-22 17:54:39,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:39" (1/1) ... [2020-08-22 17:54:39,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:39" (1/1) ... [2020-08-22 17:54:39,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:39" (1/1) ... [2020-08-22 17:54:40,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:39" (1/1) ... [2020-08-22 17:54:40,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:39" (1/1) ... [2020-08-22 17:54:40,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:39" (1/1) ... [2020-08-22 17:54:40,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 17:54:40,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 17:54:40,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 17:54:40,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 17:54:40,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 17:54:40,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 17:54:40,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 17:54:40,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 17:54:40,084 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 17:54:40,084 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 17:54:40,084 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 17:54:40,084 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 17:54:40,084 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 17:54:40,084 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 17:54:40,085 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 17:54:40,085 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 17:54:40,085 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 17:54:40,085 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 17:54:40,085 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 17:54:40,085 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 17:54:40,086 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 17:54:40,086 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 17:54:40,086 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 17:54:40,086 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 17:54:40,086 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 17:54:40,086 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 17:54:40,087 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 17:54:40,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 17:54:40,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 17:54:40,087 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 17:54:40,087 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 17:54:40,087 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 17:54:40,088 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 17:54:40,088 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 17:54:40,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 17:54:40,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 17:54:40,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 17:54:40,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 17:54:40,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 17:54:40,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 17:54:40,089 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 17:54:40,089 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 17:54:40,089 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 17:54:40,089 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 17:54:40,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 17:54:40,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 17:54:40,090 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 17:54:40,090 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 17:54:40,090 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 17:54:40,090 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 17:54:40,090 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 17:54:40,090 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 17:54:40,091 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 17:54:40,091 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 17:54:40,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 17:54:40,091 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 17:54:40,091 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 17:54:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 17:54:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 17:54:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 17:54:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 17:54:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 17:54:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 17:54:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 17:54:40,093 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 17:54:40,093 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 17:54:40,093 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 17:54:40,093 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 17:54:40,093 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 17:54:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 17:54:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 17:54:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 17:54:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 17:54:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 17:54:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 17:54:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 17:54:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 17:54:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 17:54:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 17:54:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 17:54:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 17:54:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 17:54:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 17:54:40,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 17:54:40,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 17:54:40,096 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 17:54:40,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 17:54:40,096 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 17:54:40,096 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 17:54:40,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 17:54:40,097 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 17:54:40,097 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 17:54:40,097 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 17:54:40,097 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 17:54:40,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 17:54:40,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 17:54:40,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 17:54:41,162 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 17:54:41,163 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 17:54:41,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:54:41 BoogieIcfgContainer [2020-08-22 17:54:41,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 17:54:41,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 17:54:41,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 17:54:41,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 17:54:41,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:54:39" (1/3) ... [2020-08-22 17:54:41,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7abf3de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:54:41, skipping insertion in model container [2020-08-22 17:54:41,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:54:39" (2/3) ... [2020-08-22 17:54:41,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7abf3de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:54:41, skipping insertion in model container [2020-08-22 17:54:41,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:54:41" (3/3) ... [2020-08-22 17:54:41,178 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product43.cil.c [2020-08-22 17:54:41,188 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 17:54:41,196 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 17:54:41,210 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 17:54:41,232 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 17:54:41,232 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 17:54:41,232 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 17:54:41,232 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 17:54:41,233 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 17:54:41,233 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 17:54:41,233 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 17:54:41,233 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 17:54:41,253 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states. [2020-08-22 17:54:41,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-22 17:54:41,272 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:41,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:54:41,274 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:41,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:41,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1378033390, now seen corresponding path program 1 times [2020-08-22 17:54:41,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:41,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527025061] [2020-08-22 17:54:41,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:41,344 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:41,961 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:41,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:42,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:42,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:42,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:42,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:42,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:54:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:42,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 17:54:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:42,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:42,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527025061] [2020-08-22 17:54:42,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:42,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 17:54:42,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425882853] [2020-08-22 17:54:42,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 17:54:42,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:42,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 17:54:42,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 17:54:42,224 INFO L87 Difference]: Start difference. First operand 304 states. Second operand 3 states. [2020-08-22 17:54:43,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:43,506 INFO L93 Difference]: Finished difference Result 475 states and 564 transitions. [2020-08-22 17:54:43,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 17:54:43,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-08-22 17:54:43,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:43,525 INFO L225 Difference]: With dead ends: 475 [2020-08-22 17:54:43,526 INFO L226 Difference]: Without dead ends: 296 [2020-08-22 17:54:43,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 17:54:43,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-08-22 17:54:43,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 253. [2020-08-22 17:54:43,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-08-22 17:54:43,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 274 transitions. [2020-08-22 17:54:43,662 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 274 transitions. Word has length 142 [2020-08-22 17:54:43,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:43,663 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 274 transitions. [2020-08-22 17:54:43,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 17:54:43,663 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 274 transitions. [2020-08-22 17:54:43,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-22 17:54:43,667 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:43,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:54:43,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 17:54:43,668 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:43,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:43,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1594368587, now seen corresponding path program 1 times [2020-08-22 17:54:43,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:43,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742960797] [2020-08-22 17:54:43,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:43,672 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:44,069 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:44,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:44,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:44,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:44,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:44,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:44,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:44,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 17:54:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:44,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 17:54:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:44,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:44,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742960797] [2020-08-22 17:54:44,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:44,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 17:54:44,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841293717] [2020-08-22 17:54:44,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 17:54:44,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:44,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 17:54:44,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 17:54:44,194 INFO L87 Difference]: Start difference. First operand 253 states and 274 transitions. Second operand 4 states. [2020-08-22 17:54:44,743 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:45,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:45,614 INFO L93 Difference]: Finished difference Result 383 states and 429 transitions. [2020-08-22 17:54:45,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 17:54:45,615 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-08-22 17:54:45,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:45,621 INFO L225 Difference]: With dead ends: 383 [2020-08-22 17:54:45,621 INFO L226 Difference]: Without dead ends: 279 [2020-08-22 17:54:45,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 17:54:45,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-08-22 17:54:45,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 243. [2020-08-22 17:54:45,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-08-22 17:54:45,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 261 transitions. [2020-08-22 17:54:45,725 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 261 transitions. Word has length 143 [2020-08-22 17:54:45,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:45,726 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 261 transitions. [2020-08-22 17:54:45,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 17:54:45,726 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 261 transitions. [2020-08-22 17:54:45,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 17:54:45,729 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:45,729 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] [2020-08-22 17:54:45,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 17:54:45,729 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:45,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:45,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1389720772, now seen corresponding path program 1 times [2020-08-22 17:54:45,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:45,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400957666] [2020-08-22 17:54:45,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:45,733 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:46,097 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:46,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:46,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:46,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:46,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:46,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:46,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:46,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 17:54:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:46,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-22 17:54:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:46,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400957666] [2020-08-22 17:54:46,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:46,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 17:54:46,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802643815] [2020-08-22 17:54:46,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 17:54:46,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:46,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 17:54:46,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 17:54:46,271 INFO L87 Difference]: Start difference. First operand 243 states and 261 transitions. Second operand 9 states. [2020-08-22 17:54:46,721 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:54:47,034 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:54:47,258 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:54:47,501 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:47,749 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:54:47,989 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:48,861 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:50,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:50,655 INFO L93 Difference]: Finished difference Result 640 states and 732 transitions. [2020-08-22 17:54:50,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 17:54:50,656 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2020-08-22 17:54:50,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:50,661 INFO L225 Difference]: With dead ends: 640 [2020-08-22 17:54:50,661 INFO L226 Difference]: Without dead ends: 507 [2020-08-22 17:54:50,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-08-22 17:54:50,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-08-22 17:54:50,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 428. [2020-08-22 17:54:50,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-08-22 17:54:50,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 474 transitions. [2020-08-22 17:54:50,821 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 474 transitions. Word has length 152 [2020-08-22 17:54:50,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:50,821 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 474 transitions. [2020-08-22 17:54:50,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 17:54:50,822 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 474 transitions. [2020-08-22 17:54:50,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-22 17:54:50,825 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:50,826 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] [2020-08-22 17:54:50,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 17:54:50,826 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:50,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:50,827 INFO L82 PathProgramCache]: Analyzing trace with hash 2146784857, now seen corresponding path program 1 times [2020-08-22 17:54:50,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:50,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509631403] [2020-08-22 17:54:50,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:50,829 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:51,108 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:51,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:51,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:51,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:51,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:51,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:51,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 17:54:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:51,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:54:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:51,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-22 17:54:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:51,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-22 17:54:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:51,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509631403] [2020-08-22 17:54:51,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:51,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 17:54:51,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524527676] [2020-08-22 17:54:51,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 17:54:51,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:51,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 17:54:51,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 17:54:51,255 INFO L87 Difference]: Start difference. First operand 428 states and 474 transitions. Second operand 6 states. [2020-08-22 17:54:51,649 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:54:53,204 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:53,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:53,708 INFO L93 Difference]: Finished difference Result 1056 states and 1237 transitions. [2020-08-22 17:54:53,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 17:54:53,709 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-08-22 17:54:53,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:53,715 INFO L225 Difference]: With dead ends: 1056 [2020-08-22 17:54:53,715 INFO L226 Difference]: Without dead ends: 738 [2020-08-22 17:54:53,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-22 17:54:53,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2020-08-22 17:54:53,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 622. [2020-08-22 17:54:53,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2020-08-22 17:54:53,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 688 transitions. [2020-08-22 17:54:53,955 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 688 transitions. Word has length 160 [2020-08-22 17:54:53,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:53,956 INFO L479 AbstractCegarLoop]: Abstraction has 622 states and 688 transitions. [2020-08-22 17:54:53,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 17:54:53,956 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 688 transitions. [2020-08-22 17:54:53,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-22 17:54:53,958 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:53,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:54:53,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 17:54:53,959 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:53,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:53,959 INFO L82 PathProgramCache]: Analyzing trace with hash -2147122244, now seen corresponding path program 1 times [2020-08-22 17:54:53,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:53,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031883832] [2020-08-22 17:54:53,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:53,962 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:54,308 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:54:54,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:54:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:54,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:54:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:54,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:54:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:54,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:54:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:54,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:54:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:54,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 17:54:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:54,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 17:54:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:54,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 17:54:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:54:54,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:54:54,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031883832] [2020-08-22 17:54:54,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:54:54,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 17:54:54,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811909862] [2020-08-22 17:54:54,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 17:54:54,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:54:54,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 17:54:54,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 17:54:54,483 INFO L87 Difference]: Start difference. First operand 622 states and 688 transitions. Second operand 9 states. [2020-08-22 17:54:55,133 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:54:56,242 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:56,495 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:54:56,756 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:57,012 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:54:57,235 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:54:57,478 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:57,703 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:54:58,055 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:54:59,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:54:59,542 INFO L93 Difference]: Finished difference Result 1691 states and 1962 transitions. [2020-08-22 17:54:59,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 17:54:59,543 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-08-22 17:54:59,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:54:59,554 INFO L225 Difference]: With dead ends: 1691 [2020-08-22 17:54:59,554 INFO L226 Difference]: Without dead ends: 1179 [2020-08-22 17:54:59,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-08-22 17:54:59,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2020-08-22 17:54:59,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1051. [2020-08-22 17:54:59,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1051 states. [2020-08-22 17:54:59,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1170 transitions. [2020-08-22 17:54:59,947 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1170 transitions. Word has length 161 [2020-08-22 17:54:59,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:54:59,947 INFO L479 AbstractCegarLoop]: Abstraction has 1051 states and 1170 transitions. [2020-08-22 17:54:59,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 17:54:59,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1170 transitions. [2020-08-22 17:54:59,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-22 17:54:59,950 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:54:59,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:54:59,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 17:54:59,951 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:54:59,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:54:59,951 INFO L82 PathProgramCache]: Analyzing trace with hash 122714309, now seen corresponding path program 1 times [2020-08-22 17:54:59,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:54:59,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302771036] [2020-08-22 17:54:59,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:54:59,954 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:54:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:00,218 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:00,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:00,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:00,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:00,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:00,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:00,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:55:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:00,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 17:55:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:00,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 17:55:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:00,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-08-22 17:55:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:00,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:55:00,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302771036] [2020-08-22 17:55:00,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:00,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 17:55:00,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194765554] [2020-08-22 17:55:00,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 17:55:00,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:00,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 17:55:00,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 17:55:00,400 INFO L87 Difference]: Start difference. First operand 1051 states and 1170 transitions. Second operand 10 states. [2020-08-22 17:55:00,832 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:02,306 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:02,567 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:55:02,852 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:03,122 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:55:03,354 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:03,975 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:04,232 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:04,516 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:05,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:05,286 INFO L93 Difference]: Finished difference Result 1311 states and 1533 transitions. [2020-08-22 17:55:05,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 17:55:05,287 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-08-22 17:55:05,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:05,294 INFO L225 Difference]: With dead ends: 1311 [2020-08-22 17:55:05,294 INFO L226 Difference]: Without dead ends: 1308 [2020-08-22 17:55:05,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-08-22 17:55:05,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2020-08-22 17:55:05,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1051. [2020-08-22 17:55:05,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1051 states. [2020-08-22 17:55:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1167 transitions. [2020-08-22 17:55:05,655 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1167 transitions. Word has length 166 [2020-08-22 17:55:05,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:05,655 INFO L479 AbstractCegarLoop]: Abstraction has 1051 states and 1167 transitions. [2020-08-22 17:55:05,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 17:55:05,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1167 transitions. [2020-08-22 17:55:05,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-08-22 17:55:05,660 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:05,660 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:05,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 17:55:05,661 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:05,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:05,661 INFO L82 PathProgramCache]: Analyzing trace with hash 17634563, now seen corresponding path program 1 times [2020-08-22 17:55:05,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:05,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479912489] [2020-08-22 17:55:05,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:05,664 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:05,900 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:05,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:05,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:05,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:05,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:05,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:05,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:55:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:05,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 17:55:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:05,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:06,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:55:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:06,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:55:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:06,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:55:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:06,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:55:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:06,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 17:55:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:06,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-08-22 17:55:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:06,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-08-22 17:55:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:06,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:55:06,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479912489] [2020-08-22 17:55:06,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:06,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 17:55:06,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218732607] [2020-08-22 17:55:06,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 17:55:06,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:06,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 17:55:06,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 17:55:06,073 INFO L87 Difference]: Start difference. First operand 1051 states and 1167 transitions. Second operand 10 states. [2020-08-22 17:55:07,348 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:07,617 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:55:07,861 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 17:55:08,098 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:08,349 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:08,577 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:09,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:09,783 INFO L93 Difference]: Finished difference Result 2401 states and 2856 transitions. [2020-08-22 17:55:09,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 17:55:09,784 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 212 [2020-08-22 17:55:09,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:09,795 INFO L225 Difference]: With dead ends: 2401 [2020-08-22 17:55:09,795 INFO L226 Difference]: Without dead ends: 1460 [2020-08-22 17:55:09,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-08-22 17:55:09,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2020-08-22 17:55:10,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1083. [2020-08-22 17:55:10,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1083 states. [2020-08-22 17:55:10,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1199 transitions. [2020-08-22 17:55:10,107 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1199 transitions. Word has length 212 [2020-08-22 17:55:10,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:10,108 INFO L479 AbstractCegarLoop]: Abstraction has 1083 states and 1199 transitions. [2020-08-22 17:55:10,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 17:55:10,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1199 transitions. [2020-08-22 17:55:10,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-08-22 17:55:10,112 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:10,113 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:10,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 17:55:10,113 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:10,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:10,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1737035613, now seen corresponding path program 1 times [2020-08-22 17:55:10,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:10,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220309888] [2020-08-22 17:55:10,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:10,116 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,364 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:10,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:55:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 17:55:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:55:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:55:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:55:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:55:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 17:55:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-08-22 17:55:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-08-22 17:55:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:10,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:55:10,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220309888] [2020-08-22 17:55:10,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:10,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 17:55:10,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256681621] [2020-08-22 17:55:10,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 17:55:10,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:10,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 17:55:10,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-08-22 17:55:10,569 INFO L87 Difference]: Start difference. First operand 1083 states and 1199 transitions. Second operand 13 states. [2020-08-22 17:55:11,138 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 17:55:11,368 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:55:11,591 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:11,816 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:12,029 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:12,808 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:13,039 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:13,284 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:13,596 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:13,823 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 17:55:15,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:15,264 INFO L93 Difference]: Finished difference Result 2469 states and 2928 transitions. [2020-08-22 17:55:15,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 17:55:15,265 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 212 [2020-08-22 17:55:15,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:15,273 INFO L225 Difference]: With dead ends: 2469 [2020-08-22 17:55:15,273 INFO L226 Difference]: Without dead ends: 1496 [2020-08-22 17:55:15,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-08-22 17:55:15,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2020-08-22 17:55:15,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1107. [2020-08-22 17:55:15,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1107 states. [2020-08-22 17:55:15,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1223 transitions. [2020-08-22 17:55:15,831 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1223 transitions. Word has length 212 [2020-08-22 17:55:15,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:15,832 INFO L479 AbstractCegarLoop]: Abstraction has 1107 states and 1223 transitions. [2020-08-22 17:55:15,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 17:55:15,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1223 transitions. [2020-08-22 17:55:15,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-08-22 17:55:15,837 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:15,837 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:15,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 17:55:15,838 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:15,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:15,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1064314170, now seen corresponding path program 1 times [2020-08-22 17:55:15,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:15,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449338671] [2020-08-22 17:55:15,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:15,841 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,149 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:16,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:16,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 17:55:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 17:55:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:55:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:55:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:55:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:55:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 17:55:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-08-22 17:55:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-08-22 17:55:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:16,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:55:16,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449338671] [2020-08-22 17:55:16,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:16,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 17:55:16,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398102132] [2020-08-22 17:55:16,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 17:55:16,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:16,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 17:55:16,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 17:55:16,368 INFO L87 Difference]: Start difference. First operand 1107 states and 1223 transitions. Second operand 7 states. [2020-08-22 17:55:17,014 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:17,554 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:20,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:20,218 INFO L93 Difference]: Finished difference Result 3626 states and 4383 transitions. [2020-08-22 17:55:20,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 17:55:20,218 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-08-22 17:55:20,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:20,232 INFO L225 Difference]: With dead ends: 3626 [2020-08-22 17:55:20,232 INFO L226 Difference]: Without dead ends: 2629 [2020-08-22 17:55:20,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-22 17:55:20,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2629 states. [2020-08-22 17:55:20,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2629 to 2151. [2020-08-22 17:55:20,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2151 states. [2020-08-22 17:55:20,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 2439 transitions. [2020-08-22 17:55:20,898 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 2439 transitions. Word has length 212 [2020-08-22 17:55:20,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:20,899 INFO L479 AbstractCegarLoop]: Abstraction has 2151 states and 2439 transitions. [2020-08-22 17:55:20,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 17:55:20,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 2439 transitions. [2020-08-22 17:55:20,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-08-22 17:55:20,905 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:20,905 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:20,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 17:55:20,906 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:20,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:20,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1071999651, now seen corresponding path program 1 times [2020-08-22 17:55:20,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:20,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94790238] [2020-08-22 17:55:20,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:20,909 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,281 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 17:55:21,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 17:55:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 17:55:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 17:55:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 17:55:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 17:55:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 17:55:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 17:55:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 17:55:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 17:55:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 17:55:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 17:55:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:55:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 17:55:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 17:55:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-08-22 17:55:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 17:55:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 17:55:21,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 17:55:21,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94790238] [2020-08-22 17:55:21,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 17:55:21,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-08-22 17:55:21,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173640192] [2020-08-22 17:55:21,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-22 17:55:21,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 17:55:21,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-22 17:55:21,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-08-22 17:55:21,756 INFO L87 Difference]: Start difference. First operand 2151 states and 2439 transitions. Second operand 20 states. [2020-08-22 17:55:22,222 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:22,569 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 17:55:22,816 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 17:55:23,059 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:23,303 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 17:55:23,533 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:24,379 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 17:55:25,204 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:25,503 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:55:25,908 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:26,193 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:55:27,496 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:27,812 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:55:28,093 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:28,364 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:55:28,714 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:29,005 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:55:29,271 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 17:55:29,546 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 17:55:30,030 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-22 17:55:30,601 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 190 [2020-08-22 17:55:31,060 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-22 17:55:32,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:55:32,665 INFO L93 Difference]: Finished difference Result 4577 states and 5360 transitions. [2020-08-22 17:55:32,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-08-22 17:55:32,665 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 217 [2020-08-22 17:55:32,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:55:32,680 INFO L225 Difference]: With dead ends: 4577 [2020-08-22 17:55:32,681 INFO L226 Difference]: Without dead ends: 2536 [2020-08-22 17:55:32,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=563, Invalid=2407, Unknown=0, NotChecked=0, Total=2970 [2020-08-22 17:55:32,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2536 states. [2020-08-22 17:55:33,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2536 to 2065. [2020-08-22 17:55:33,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2065 states. [2020-08-22 17:55:33,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 2307 transitions. [2020-08-22 17:55:33,347 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 2307 transitions. Word has length 217 [2020-08-22 17:55:33,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:55:33,348 INFO L479 AbstractCegarLoop]: Abstraction has 2065 states and 2307 transitions. [2020-08-22 17:55:33,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-22 17:55:33,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 2307 transitions. [2020-08-22 17:55:33,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-08-22 17:55:33,354 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 17:55:33,355 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 17:55:33,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 17:55:33,355 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 17:55:33,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 17:55:33,356 INFO L82 PathProgramCache]: Analyzing trace with hash -768855845, now seen corresponding path program 1 times [2020-08-22 17:55:33,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 17:55:33,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335020484] [2020-08-22 17:55:33,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 17:55:33,396 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 17:55:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 17:55:33,453 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 17:55:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 17:55:33,508 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 17:55:33,716 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 17:55:33,716 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 17:55:33,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 17:55:33,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:55:33 BoogieIcfgContainer [2020-08-22 17:55:33,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 17:55:33,749 INFO L168 Benchmark]: Toolchain (without parser) took 54453.32 ms. Allocated memory was 146.3 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 102.7 MB in the beginning and 77.8 MB in the end (delta: 24.9 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2020-08-22 17:55:33,750 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 17:55:33,751 INFO L168 Benchmark]: CACSL2BoogieTranslator took 638.78 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 102.5 MB in the beginning and 171.4 MB in the end (delta: -68.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-08-22 17:55:33,751 INFO L168 Benchmark]: Boogie Preprocessor took 89.43 ms. Allocated memory is still 203.4 MB. Free memory was 171.4 MB in the beginning and 167.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-22 17:55:33,752 INFO L168 Benchmark]: RCFGBuilder took 1142.48 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 167.2 MB in the beginning and 176.9 MB in the end (delta: -9.7 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. [2020-08-22 17:55:33,753 INFO L168 Benchmark]: TraceAbstraction took 52576.19 ms. Allocated memory was 237.0 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 176.9 MB in the beginning and 77.8 MB in the end (delta: 99.1 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2020-08-22 17:55:33,756 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 638.78 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 102.5 MB in the beginning and 171.4 MB in the end (delta: -68.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.43 ms. Allocated memory is still 203.4 MB. Free memory was 171.4 MB in the beginning and 167.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1142.48 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 167.2 MB in the beginning and 176.9 MB in the end (delta: -9.7 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 52576.19 ms. Allocated memory was 237.0 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 176.9 MB in the beginning and 77.8 MB in the end (delta: 99.1 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: 405]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L147] int pumpRunning = 0; [L148] int systemActive = 1; [L436] int cleanupTimeShifts = 4; [L704] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L512] int retValue_acc ; [L513] int tmp ; [L517] FCALL select_helpers() [L518] FCALL select_features() [L519] CALL, EXPR valid_product() [L927] int retValue_acc ; [L930] retValue_acc = 1 [L931] return (retValue_acc); [L519] RET, EXPR valid_product() [L519] tmp = valid_product() [L521] COND TRUE \read(tmp) [L523] FCALL setup() [L524] CALL runTest() [L503] CALL test() [L335] int splverifierCounter ; [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L339] int tmp___2 ; [L342] splverifierCounter = 0 [L344] COND TRUE 1 [L346] COND TRUE splverifierCounter < 4 [L352] tmp = __VERIFIER_nondet_int() [L354] COND TRUE \read(tmp) [L356] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L356] RET waterRise() [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND FALSE !(\read(tmp___0)) [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___2) [L389] CALL timeShift() [L155] COND FALSE !(\read(pumpRunning)) [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND TRUE ! pumpRunning [L189] CALL, EXPR isHighWaterLevel() [L299] int retValue_acc ; [L300] int tmp ; [L301] int tmp___0 ; [L305] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L305] RET, EXPR isHighWaterSensorDry() [L305] tmp = isHighWaterSensorDry() [L307] COND FALSE !(\read(tmp)) [L310] tmp___0 = 1 [L312] retValue_acc = tmp___0 [L313] return (retValue_acc); [L189] RET, EXPR isHighWaterLevel() [L189] tmp = isHighWaterLevel() [L191] COND TRUE \read(tmp) [L193] CALL activatePump() [L218] int tmp ; [L222] CALL, EXPR isMethaneAlarm() [L243] int retValue_acc ; [L247] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L247] RET, EXPR isMethaneLevelCritical() [L247] retValue_acc = isMethaneLevelCritical() [L249] return (retValue_acc); [L222] RET, EXPR isMethaneAlarm() [L222] tmp = isMethaneAlarm() [L224] COND FALSE !(\read(tmp)) [L228] CALL activatePump__wrappee__highWaterSensor() [L212] pumpRunning = 1 [L228] RET activatePump__wrappee__highWaterSensor() [L193] RET activatePump() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification1_spec__1() [L411] int tmp ; [L412] int tmp___0 ; [L416] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L416] RET, EXPR isMethaneLevelCritical() [L416] tmp = isMethaneLevelCritical() [L418] COND FALSE !(\read(tmp)) [L170] RET __utac_acc__Specification1_spec__1() [L389] RET timeShift() [L344] COND TRUE 1 [L346] COND TRUE splverifierCounter < 4 [L352] tmp = __VERIFIER_nondet_int() [L354] COND FALSE !(\read(tmp)) [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND TRUE \read(tmp___0) [L366] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L366] RET changeMethaneLevel() [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___2) [L389] CALL timeShift() [L155] COND TRUE \read(pumpRunning) [L157] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L157] RET lowerWaterLevel() [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND FALSE !(! pumpRunning) [L202] FCALL processEnvironment__wrappee__base() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification1_spec__1() [L411] int tmp ; [L412] int tmp___0 ; [L416] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L416] RET, EXPR isMethaneLevelCritical() [L416] tmp = isMethaneLevelCritical() [L418] COND TRUE \read(tmp) [L420] CALL, EXPR isPumpRunning() [L254] int retValue_acc ; [L257] retValue_acc = pumpRunning [L258] return (retValue_acc); [L420] RET, EXPR isPumpRunning() [L420] tmp___0 = isPumpRunning() [L422] COND TRUE \read(tmp___0) [L424] CALL __automaton_fail() [L405] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 621 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 52.4s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 42.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2472 SDtfs, 5850 SDslu, 5505 SDs, 0 SdLazy, 11838 SolverSat, 1939 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 437 GetRequests, 265 SyntacticMatches, 4 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 19.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2151occurred 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: 3.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 2374 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...