/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:09:37,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:09:37,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:09:38,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:09:38,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:09:38,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:09:38,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:09:38,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:09:38,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:09:38,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:09:38,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:09:38,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:09:38,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:09:38,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:09:38,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:09:38,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:09:38,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:09:38,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:09:38,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:09:38,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:09:38,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:09:38,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:09:38,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:09:38,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:09:38,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 18:09:38,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 18:09:38,073 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 18:09:38,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 18:09:38,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 18:09:38,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 18:09:38,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 18:09:38,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 18:09:38,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 18:09:38,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 18:09:38,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 18:09:38,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 18:09:38,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 18:09:38,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 18:09:38,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:09:38,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:09:38,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:09:38,092 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 18:09:38,101 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:09:38,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:09:38,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:09:38,102 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:09:38,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:09:38,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:09:38,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:09:38,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:09:38,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:09:38,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:09:38,104 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:09:38,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:09:38,104 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:09:38,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:09:38,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:09:38,105 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:09:38,105 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:09:38,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:09:38,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:09:38,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:09:38,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:09:38,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:09:38,106 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:09:38,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:09:38,411 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:09:38,414 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:09:38,416 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:09:38,416 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:09:38,417 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product40.cil.c [2020-08-22 18:09:38,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eec34a7e5/590e7cf776444f9eb01c472759a451a1/FLAG32c3cff0f [2020-08-22 18:09:39,033 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:09:39,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product40.cil.c [2020-08-22 18:09:39,065 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eec34a7e5/590e7cf776444f9eb01c472759a451a1/FLAG32c3cff0f [2020-08-22 18:09:39,334 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eec34a7e5/590e7cf776444f9eb01c472759a451a1 [2020-08-22 18:09:39,342 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:09:39,343 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:09:39,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:09:39,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:09:39,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:09:39,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:09:39" (1/1) ... [2020-08-22 18:09:39,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a20c0d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:39, skipping insertion in model container [2020-08-22 18:09:39,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:09:39" (1/1) ... [2020-08-22 18:09:39,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:09:39,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:09:39,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:09:39,830 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:09:39,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:09:39,991 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:09:39,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:39 WrapperNode [2020-08-22 18:09:39,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:09:39,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:09:39,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:09:39,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:09:40,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:39" (1/1) ... [2020-08-22 18:09:40,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:39" (1/1) ... [2020-08-22 18:09:40,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:39" (1/1) ... [2020-08-22 18:09:40,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:39" (1/1) ... [2020-08-22 18:09:40,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:39" (1/1) ... [2020-08-22 18:09:40,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:39" (1/1) ... [2020-08-22 18:09:40,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:39" (1/1) ... [2020-08-22 18:09:40,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:09:40,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:09:40,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:09:40,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:09:40,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:39" (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 18:09:40,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:09:40,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:09:40,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 18:09:40,164 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 18:09:40,164 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 18:09:40,165 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 18:09:40,165 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 18:09:40,165 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 18:09:40,165 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 18:09:40,165 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 18:09:40,165 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 18:09:40,166 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 18:09:40,167 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 18:09:40,167 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 18:09:40,167 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 18:09:40,167 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 18:09:40,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 18:09:40,167 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 18:09:40,168 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 18:09:40,168 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 18:09:40,169 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 18:09:40,169 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:09:40,171 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 18:09:40,172 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 18:09:40,172 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 18:09:40,172 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 18:09:40,172 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 18:09:40,172 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 18:09:40,172 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 18:09:40,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 18:09:40,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 18:09:40,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 18:09:40,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 18:09:40,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 18:09:40,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 18:09:40,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 18:09:40,174 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 18:09:40,174 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 18:09:40,174 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 18:09:40,174 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 18:09:40,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:09:40,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:09:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 18:09:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 18:09:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 18:09:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 18:09:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 18:09:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 18:09:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 18:09:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 18:09:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 18:09:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 18:09:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 18:09:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 18:09:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 18:09:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 18:09:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 18:09:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 18:09:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 18:09:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 18:09:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 18:09:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 18:09:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 18:09:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 18:09:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:09:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 18:09:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 18:09:40,178 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 18:09:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 18:09:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 18:09:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 18:09:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 18:09:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:09:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 18:09:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 18:09:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 18:09:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 18:09:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 18:09:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 18:09:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 18:09:40,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:09:40,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 18:09:40,182 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 18:09:40,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:09:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 18:09:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 18:09:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:09:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 18:09:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 18:09:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 18:09:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 18:09:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:09:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 18:09:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:09:41,342 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:09:41,342 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 18:09:41,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:09:41 BoogieIcfgContainer [2020-08-22 18:09:41,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:09:41,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:09:41,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:09:41,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:09:41,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:09:39" (1/3) ... [2020-08-22 18:09:41,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8bdbf2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:09:41, skipping insertion in model container [2020-08-22 18:09:41,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:09:39" (2/3) ... [2020-08-22 18:09:41,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8bdbf2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:09:41, skipping insertion in model container [2020-08-22 18:09:41,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:09:41" (3/3) ... [2020-08-22 18:09:41,364 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product40.cil.c [2020-08-22 18:09:41,374 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:09:41,383 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:09:41,394 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:09:41,413 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:09:41,413 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:09:41,414 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:09:41,414 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:09:41,414 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:09:41,414 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:09:41,415 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:09:41,415 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:09:41,436 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states. [2020-08-22 18:09:41,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-08-22 18:09:41,459 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:09:41,460 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 18:09:41,460 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:09:41,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:09:41,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1162021346, now seen corresponding path program 1 times [2020-08-22 18:09:41,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:09:41,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210000992] [2020-08-22 18:09:41,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:09:41,537 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:09:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:42,215 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:09:42,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:09:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:42,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:09:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:42,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:09:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:42,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:09:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:42,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:09:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:42,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 18:09:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:42,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 18:09:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:42,371 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 18:09:42,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210000992] [2020-08-22 18:09:42,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:09:42,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:09:42,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861989790] [2020-08-22 18:09:42,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:09:42,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:09:42,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:09:42,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:09:42,414 INFO L87 Difference]: Start difference. First operand 316 states. Second operand 3 states. [2020-08-22 18:09:43,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:09:43,880 INFO L93 Difference]: Finished difference Result 500 states and 595 transitions. [2020-08-22 18:09:43,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:09:43,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-08-22 18:09:43,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:09:43,903 INFO L225 Difference]: With dead ends: 500 [2020-08-22 18:09:43,903 INFO L226 Difference]: Without dead ends: 309 [2020-08-22 18:09:43,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:09:43,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-08-22 18:09:44,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 265. [2020-08-22 18:09:44,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-08-22 18:09:44,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 288 transitions. [2020-08-22 18:09:44,083 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 288 transitions. Word has length 142 [2020-08-22 18:09:44,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:09:44,084 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 288 transitions. [2020-08-22 18:09:44,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:09:44,085 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 288 transitions. [2020-08-22 18:09:44,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-22 18:09:44,089 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:09:44,090 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 18:09:44,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:09:44,090 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:09:44,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:09:44,091 INFO L82 PathProgramCache]: Analyzing trace with hash -509379685, now seen corresponding path program 1 times [2020-08-22 18:09:44,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:09:44,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036595730] [2020-08-22 18:09:44,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:09:44,095 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:09:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:44,459 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:09:44,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:09:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:44,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:09:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:44,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:09:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:44,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:09:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:44,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:09:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:44,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 18:09:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:44,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:09:44,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:44,566 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 18:09:44,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036595730] [2020-08-22 18:09:44,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:09:44,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:09:44,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054885454] [2020-08-22 18:09:44,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:09:44,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:09:44,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:09:44,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:09:44,571 INFO L87 Difference]: Start difference. First operand 265 states and 288 transitions. Second operand 4 states. [2020-08-22 18:09:45,146 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:09:46,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:09:46,133 INFO L93 Difference]: Finished difference Result 407 states and 458 transitions. [2020-08-22 18:09:46,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:09:46,134 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-08-22 18:09:46,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:09:46,139 INFO L225 Difference]: With dead ends: 407 [2020-08-22 18:09:46,139 INFO L226 Difference]: Without dead ends: 292 [2020-08-22 18:09:46,141 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 18:09:46,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-08-22 18:09:46,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 255. [2020-08-22 18:09:46,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-08-22 18:09:46,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 275 transitions. [2020-08-22 18:09:46,223 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 275 transitions. Word has length 143 [2020-08-22 18:09:46,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:09:46,223 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 275 transitions. [2020-08-22 18:09:46,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:09:46,224 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 275 transitions. [2020-08-22 18:09:46,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-08-22 18:09:46,226 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:09:46,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:09:46,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:09:46,227 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:09:46,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:09:46,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1147925299, now seen corresponding path program 1 times [2020-08-22 18:09:46,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:09:46,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314113962] [2020-08-22 18:09:46,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:09:46,231 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:09:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:46,535 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:09:46,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:09:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:46,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:09:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:46,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:09:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:46,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:09:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:46,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:09:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:46,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 18:09:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:46,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 18:09:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:46,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 18:09:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:46,707 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 18:09:46,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314113962] [2020-08-22 18:09:46,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:09:46,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 18:09:46,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540855827] [2020-08-22 18:09:46,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 18:09:46,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:09:46,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 18:09:46,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 18:09:46,712 INFO L87 Difference]: Start difference. First operand 255 states and 275 transitions. Second operand 10 states. [2020-08-22 18:09:47,321 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:09:47,710 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:48,084 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 18:09:48,349 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:48,569 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:48,789 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:49,661 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:09:51,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:09:51,985 INFO L93 Difference]: Finished difference Result 700 states and 815 transitions. [2020-08-22 18:09:51,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 18:09:51,986 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-08-22 18:09:51,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:09:51,993 INFO L225 Difference]: With dead ends: 700 [2020-08-22 18:09:51,993 INFO L226 Difference]: Without dead ends: 555 [2020-08-22 18:09:51,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-08-22 18:09:51,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-08-22 18:09:52,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 460. [2020-08-22 18:09:52,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-08-22 18:09:52,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 514 transitions. [2020-08-22 18:09:52,139 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 514 transitions. Word has length 156 [2020-08-22 18:09:52,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:09:52,139 INFO L479 AbstractCegarLoop]: Abstraction has 460 states and 514 transitions. [2020-08-22 18:09:52,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 18:09:52,140 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 514 transitions. [2020-08-22 18:09:52,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-22 18:09:52,143 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:09:52,143 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 18:09:52,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:09:52,143 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:09:52,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:09:52,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1964515528, now seen corresponding path program 1 times [2020-08-22 18:09:52,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:09:52,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853968721] [2020-08-22 18:09:52,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:09:52,147 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:09:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:52,477 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:09:52,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:09:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:52,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:09:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:52,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:09:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:52,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:09:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:52,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:09:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:52,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 18:09:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:52,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 18:09:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:52,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 18:09:52,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:09:52,682 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 18:09:52,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853968721] [2020-08-22 18:09:52,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:09:52,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 18:09:52,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129065047] [2020-08-22 18:09:52,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 18:09:52,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:09:52,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 18:09:52,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-08-22 18:09:52,686 INFO L87 Difference]: Start difference. First operand 460 states and 514 transitions. Second operand 14 states. [2020-08-22 18:09:53,228 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:09:53,565 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:53,786 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:09:54,022 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:54,264 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:54,509 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:55,143 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:09:56,183 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:56,520 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:56,897 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:57,223 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:09:57,498 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:09:57,729 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 18:09:58,009 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:09:58,296 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:09:58,537 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:58,909 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:09:59,297 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 18:09:59,650 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:00,035 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:01,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:10:01,808 INFO L93 Difference]: Finished difference Result 1596 states and 2003 transitions. [2020-08-22 18:10:01,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 18:10:01,810 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 161 [2020-08-22 18:10:01,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:10:01,828 INFO L225 Difference]: With dead ends: 1596 [2020-08-22 18:10:01,828 INFO L226 Difference]: Without dead ends: 1246 [2020-08-22 18:10:01,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 18:10:01,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2020-08-22 18:10:02,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1107. [2020-08-22 18:10:02,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1107 states. [2020-08-22 18:10:02,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1307 transitions. [2020-08-22 18:10:02,266 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1307 transitions. Word has length 161 [2020-08-22 18:10:02,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:10:02,266 INFO L479 AbstractCegarLoop]: Abstraction has 1107 states and 1307 transitions. [2020-08-22 18:10:02,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 18:10:02,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1307 transitions. [2020-08-22 18:10:02,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-22 18:10:02,271 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:10:02,272 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 18:10:02,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:10:02,272 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:10:02,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:10:02,273 INFO L82 PathProgramCache]: Analyzing trace with hash -771315303, now seen corresponding path program 1 times [2020-08-22 18:10:02,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:10:02,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941664151] [2020-08-22 18:10:02,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:10:02,276 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:10:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:02,575 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:10:02,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:10:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:02,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:10:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:02,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:10:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:02,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:10:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:02,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:10:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:02,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 18:10:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:02,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 18:10:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:02,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 18:10:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:02,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-08-22 18:10:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:02,705 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 18:10:02,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941664151] [2020-08-22 18:10:02,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:10:02,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 18:10:02,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711620313] [2020-08-22 18:10:02,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 18:10:02,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:10:02,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 18:10:02,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:10:02,709 INFO L87 Difference]: Start difference. First operand 1107 states and 1307 transitions. Second operand 6 states. [2020-08-22 18:10:03,218 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:10:05,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:10:05,582 INFO L93 Difference]: Finished difference Result 2568 states and 3220 transitions. [2020-08-22 18:10:05,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 18:10:05,582 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2020-08-22 18:10:05,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:10:05,596 INFO L225 Difference]: With dead ends: 2568 [2020-08-22 18:10:05,597 INFO L226 Difference]: Without dead ends: 1571 [2020-08-22 18:10:05,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 18:10:05,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2020-08-22 18:10:06,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1444. [2020-08-22 18:10:06,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-08-22 18:10:06,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1700 transitions. [2020-08-22 18:10:06,152 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1700 transitions. Word has length 166 [2020-08-22 18:10:06,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:10:06,153 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1700 transitions. [2020-08-22 18:10:06,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 18:10:06,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1700 transitions. [2020-08-22 18:10:06,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-08-22 18:10:06,158 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:10:06,164 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:10:06,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 18:10:06,165 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:10:06,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:10:06,165 INFO L82 PathProgramCache]: Analyzing trace with hash -413389860, now seen corresponding path program 1 times [2020-08-22 18:10:06,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:10:06,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241308734] [2020-08-22 18:10:06,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:10:06,198 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:10:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:06,515 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:10:06,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:10:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:06,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:10:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:06,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:10:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:06,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:10:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:06,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:10:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:06,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 18:10:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:06,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 18:10:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:06,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-22 18:10:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:06,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:06,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:06,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-22 18:10:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:06,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 18:10:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:06,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-22 18:10:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:06,695 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 18:10:06,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241308734] [2020-08-22 18:10:06,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:10:06,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 18:10:06,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513765290] [2020-08-22 18:10:06,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 18:10:06,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:10:06,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 18:10:06,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-22 18:10:06,700 INFO L87 Difference]: Start difference. First operand 1444 states and 1700 transitions. Second operand 11 states. [2020-08-22 18:10:07,138 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:10:08,984 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:09,225 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:09,472 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:09,717 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:09,967 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:10,768 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:10:10,996 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:11,296 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:11,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:10:11,747 INFO L93 Difference]: Finished difference Result 1634 states and 1984 transitions. [2020-08-22 18:10:11,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 18:10:11,748 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 209 [2020-08-22 18:10:11,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:10:11,759 INFO L225 Difference]: With dead ends: 1634 [2020-08-22 18:10:11,759 INFO L226 Difference]: Without dead ends: 1631 [2020-08-22 18:10:11,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2020-08-22 18:10:11,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2020-08-22 18:10:12,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1453. [2020-08-22 18:10:12,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1453 states. [2020-08-22 18:10:12,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 1708 transitions. [2020-08-22 18:10:12,244 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 1708 transitions. Word has length 209 [2020-08-22 18:10:12,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:10:12,245 INFO L479 AbstractCegarLoop]: Abstraction has 1453 states and 1708 transitions. [2020-08-22 18:10:12,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 18:10:12,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 1708 transitions. [2020-08-22 18:10:12,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-08-22 18:10:12,254 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:10:12,255 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:10:12,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 18:10:12,255 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:10:12,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:10:12,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1741049063, now seen corresponding path program 1 times [2020-08-22 18:10:12,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:10:12,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563168604] [2020-08-22 18:10:12,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:10:12,274 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:10:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:12,555 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:10:12,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:10:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:12,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:10:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:12,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:10:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:12,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:10:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:12,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:10:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:12,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 18:10:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:12,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 18:10:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:12,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 18:10:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:12,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:12,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:12,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:12,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:10:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:12,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:10:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:12,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 18:10:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:12,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:12,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-22 18:10:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:12,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-08-22 18:10:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:12,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-08-22 18:10:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:12,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:12,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:12,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:12,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:10:12,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:12,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:10:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:12,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-22 18:10:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:12,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-22 18:10:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:12,898 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 18:10:12,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563168604] [2020-08-22 18:10:12,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:10:12,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-22 18:10:12,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683834630] [2020-08-22 18:10:12,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 18:10:12,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:10:12,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 18:10:12,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-08-22 18:10:12,901 INFO L87 Difference]: Start difference. First operand 1453 states and 1708 transitions. Second operand 15 states. [2020-08-22 18:10:13,407 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:10:14,128 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:10:15,304 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:15,588 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 18:10:15,863 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 18:10:16,155 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:16,417 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:16,701 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 18:10:16,944 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:10:17,252 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 18:10:17,487 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:17,763 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:18,068 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:10:18,340 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:19,861 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:20,105 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:10:20,350 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 18:10:20,607 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:20,863 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:21,089 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:22,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:10:22,603 INFO L93 Difference]: Finished difference Result 3273 states and 4207 transitions. [2020-08-22 18:10:22,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-08-22 18:10:22,603 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 280 [2020-08-22 18:10:22,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:10:22,618 INFO L225 Difference]: With dead ends: 3273 [2020-08-22 18:10:22,619 INFO L226 Difference]: Without dead ends: 1930 [2020-08-22 18:10:22,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=527, Invalid=2229, Unknown=0, NotChecked=0, Total=2756 [2020-08-22 18:10:22,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2020-08-22 18:10:23,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1411. [2020-08-22 18:10:23,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1411 states. [2020-08-22 18:10:23,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1644 transitions. [2020-08-22 18:10:23,088 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1644 transitions. Word has length 280 [2020-08-22 18:10:23,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:10:23,089 INFO L479 AbstractCegarLoop]: Abstraction has 1411 states and 1644 transitions. [2020-08-22 18:10:23,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 18:10:23,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1644 transitions. [2020-08-22 18:10:23,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-08-22 18:10:23,096 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:10:23,096 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:10:23,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 18:10:23,097 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:10:23,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:10:23,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1116665167, now seen corresponding path program 1 times [2020-08-22 18:10:23,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:10:23,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872879374] [2020-08-22 18:10:23,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:10:23,112 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:10:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,413 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:10:23,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:10:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:10:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:10:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:10:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:10:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 18:10:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 18:10:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:10:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:10:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 18:10:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-08-22 18:10:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-08-22 18:10:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-08-22 18:10:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 18:10:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 18:10:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-22 18:10:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-08-22 18:10:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:23,747 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 18:10:23,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872879374] [2020-08-22 18:10:23,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:10:23,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-22 18:10:23,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024507621] [2020-08-22 18:10:23,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 18:10:23,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:10:23,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 18:10:23,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-08-22 18:10:23,750 INFO L87 Difference]: Start difference. First operand 1411 states and 1644 transitions. Second operand 15 states. [2020-08-22 18:10:24,372 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:24,619 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:10:24,863 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:25,106 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:25,336 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:26,299 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:26,551 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:26,805 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:27,084 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:27,329 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:10:28,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:10:28,996 INFO L93 Difference]: Finished difference Result 2761 states and 3370 transitions. [2020-08-22 18:10:28,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 18:10:28,997 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 268 [2020-08-22 18:10:28,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:10:29,007 INFO L225 Difference]: With dead ends: 2761 [2020-08-22 18:10:29,007 INFO L226 Difference]: Without dead ends: 1460 [2020-08-22 18:10:29,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-08-22 18:10:29,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2020-08-22 18:10:29,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1228. [2020-08-22 18:10:29,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1228 states. [2020-08-22 18:10:29,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1415 transitions. [2020-08-22 18:10:29,551 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1415 transitions. Word has length 268 [2020-08-22 18:10:29,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:10:29,552 INFO L479 AbstractCegarLoop]: Abstraction has 1228 states and 1415 transitions. [2020-08-22 18:10:29,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 18:10:29,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1415 transitions. [2020-08-22 18:10:29,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-08-22 18:10:29,559 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:10:29,560 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:10:29,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 18:10:29,560 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:10:29,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:10:29,560 INFO L82 PathProgramCache]: Analyzing trace with hash 2031737990, now seen corresponding path program 1 times [2020-08-22 18:10:29,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:10:29,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216425453] [2020-08-22 18:10:29,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:10:29,577 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:10:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:30,050 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:10:30,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:10:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:30,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:10:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:30,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:10:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:30,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:10:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:30,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:10:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:30,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 18:10:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:30,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 18:10:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:30,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 18:10:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:30,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:30,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:30,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:30,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 18:10:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:30,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 18:10:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:30,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 18:10:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:30,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:30,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 18:10:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:30,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-22 18:10:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:30,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-08-22 18:10:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:30,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:30,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 18:10:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:30,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 18:10:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:30,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:10:30,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:30,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 18:10:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:30,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-08-22 18:10:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:10:30,351 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 18:10:30,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216425453] [2020-08-22 18:10:30,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:10:30,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 18:10:30,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969258260] [2020-08-22 18:10:30,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 18:10:30,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:10:30,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 18:10:30,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-08-22 18:10:30,357 INFO L87 Difference]: Start difference. First operand 1228 states and 1415 transitions. Second operand 14 states. [2020-08-22 18:10:30,791 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:10:31,436 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:10:32,097 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:32,335 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:32,597 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:32,857 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:33,109 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:33,410 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:10:33,663 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:33,938 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:34,232 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:10:34,497 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:10:36,834 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:10:37,048 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:10:38,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:10:38,137 INFO L93 Difference]: Finished difference Result 3204 states and 4072 transitions. [2020-08-22 18:10:38,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-22 18:10:38,138 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 273 [2020-08-22 18:10:38,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:10:38,151 INFO L225 Difference]: With dead ends: 3204 [2020-08-22 18:10:38,151 INFO L226 Difference]: Without dead ends: 2316 [2020-08-22 18:10:38,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 62 SyntacticMatches, 6 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=617, Invalid=1639, Unknown=0, NotChecked=0, Total=2256 [2020-08-22 18:10:38,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2020-08-22 18:10:38,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 1659. [2020-08-22 18:10:38,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1659 states. [2020-08-22 18:10:38,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 1944 transitions. [2020-08-22 18:10:38,743 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 1944 transitions. Word has length 273 [2020-08-22 18:10:38,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:10:38,744 INFO L479 AbstractCegarLoop]: Abstraction has 1659 states and 1944 transitions. [2020-08-22 18:10:38,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 18:10:38,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 1944 transitions. [2020-08-22 18:10:38,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-08-22 18:10:38,750 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:10:38,750 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:10:38,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 18:10:38,751 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:10:38,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:10:38,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1002566142, now seen corresponding path program 2 times [2020-08-22 18:10:38,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:10:38,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578625061] [2020-08-22 18:10:38,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:10:38,765 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:10:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:10:38,826 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:10:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:10:38,990 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:10:39,321 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:10:39,321 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:10:39,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 18:10:39,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:10:39 BoogieIcfgContainer [2020-08-22 18:10:39,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:10:39,362 INFO L168 Benchmark]: Toolchain (without parser) took 60019.54 ms. Allocated memory was 140.5 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 103.8 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2020-08-22 18:10:39,363 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 18:10:39,364 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.94 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.4 MB in the beginning and 170.7 MB in the end (delta: -67.3 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:10:39,364 INFO L168 Benchmark]: Boogie Preprocessor took 90.07 ms. Allocated memory is still 203.4 MB. Free memory was 170.7 MB in the beginning and 166.1 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-08-22 18:10:39,366 INFO L168 Benchmark]: RCFGBuilder took 1270.41 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 166.1 MB in the beginning and 170.3 MB in the end (delta: -4.3 MB). Peak memory consumption was 79.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:10:39,367 INFO L168 Benchmark]: TraceAbstraction took 58006.83 ms. Allocated memory was 234.4 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 168.9 MB in the beginning and 1.1 GB in the end (delta: -943.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2020-08-22 18:10:39,372 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 647.94 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.4 MB in the beginning and 170.7 MB in the end (delta: -67.3 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.07 ms. Allocated memory is still 203.4 MB. Free memory was 170.7 MB in the beginning and 166.1 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1270.41 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 166.1 MB in the beginning and 170.3 MB in the end (delta: -4.3 MB). Peak memory consumption was 79.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 58006.83 ms. Allocated memory was 234.4 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 168.9 MB in the beginning and 1.1 GB in the end (delta: -943.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 329]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L123] int pumpRunning = 0; [L124] int systemActive = 1; [L334] int cleanupTimeShifts = 4; [L434] int waterLevel = 1; [L435] int methaneLevelCritical = 0; [L697] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L410] int retValue_acc ; [L411] int tmp ; [L415] FCALL select_helpers() [L416] FCALL select_features() [L417] CALL, EXPR valid_product() [L946] int retValue_acc ; [L949] retValue_acc = 1 [L950] return (retValue_acc); [L417] RET, EXPR valid_product() [L417] tmp = valid_product() [L419] COND TRUE \read(tmp) [L421] FCALL setup() [L422] CALL runTest() [L401] CALL test() [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND TRUE \read(tmp) [L68] CALL waterRise() [L452] COND TRUE waterLevel < 2 [L453] waterLevel = waterLevel + 1 [L68] RET waterRise() [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) [L88] CALL startSystem() [L320] systemActive = 1 [L88] RET startSystem() [L103] CALL timeShift() [L131] COND FALSE !(\read(pumpRunning)) [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L186] int tmp ; [L189] COND FALSE !(\read(pumpRunning)) [L204] CALL processEnvironment__wrappee__highWaterSensor() [L160] int tmp ; [L163] COND TRUE ! pumpRunning [L165] CALL, EXPR isHighWaterLevel() [L283] int retValue_acc ; [L284] int tmp ; [L285] int tmp___0 ; [L289] CALL, EXPR isHighWaterSensorDry() [L514] int retValue_acc ; [L517] COND FALSE !(waterLevel < 2) [L521] retValue_acc = 0 [L522] return (retValue_acc); [L289] RET, EXPR isHighWaterSensorDry() [L289] tmp = isHighWaterSensorDry() [L291] COND FALSE !(\read(tmp)) [L294] tmp___0 = 1 [L296] retValue_acc = tmp___0 [L297] return (retValue_acc); [L165] RET, EXPR isHighWaterLevel() [L165] tmp = isHighWaterLevel() [L167] COND TRUE \read(tmp) [L169] CALL activatePump() [L214] pumpRunning = 1 [L169] RET activatePump() [L204] RET processEnvironment__wrappee__highWaterSensor() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L895] int tmp ; [L896] int tmp___0 ; [L900] CALL, EXPR getWaterLevel() [L505] int retValue_acc ; [L508] retValue_acc = waterLevel [L509] return (retValue_acc); [L900] RET, EXPR getWaterLevel() [L900] tmp = getWaterLevel() [L902] COND FALSE !(tmp == 0) [L146] RET __utac_acc__Specification4_spec__1() [L103] RET timeShift() [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) [L88] CALL startSystem() [L320] systemActive = 1 [L88] RET startSystem() [L103] CALL timeShift() [L131] COND TRUE \read(pumpRunning) [L133] CALL lowerWaterLevel() [L440] COND TRUE waterLevel > 0 [L441] waterLevel = waterLevel - 1 [L133] RET lowerWaterLevel() [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L186] int tmp ; [L189] COND TRUE \read(pumpRunning) [L191] CALL, EXPR isMethaneAlarm() [L227] int retValue_acc ; [L231] CALL, EXPR isMethaneLevelCritical() [L473] int retValue_acc ; [L476] retValue_acc = methaneLevelCritical [L477] return (retValue_acc); [L231] RET, EXPR isMethaneLevelCritical() [L231] retValue_acc = isMethaneLevelCritical() [L233] return (retValue_acc); [L191] RET, EXPR isMethaneAlarm() [L191] tmp = isMethaneAlarm() [L193] COND FALSE !(\read(tmp)) [L199] CALL processEnvironment__wrappee__highWaterSensor() [L160] int tmp ; [L163] COND FALSE !(! pumpRunning) [L178] FCALL processEnvironment__wrappee__base() [L199] RET processEnvironment__wrappee__highWaterSensor() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L895] int tmp ; [L896] int tmp___0 ; [L900] CALL, EXPR getWaterLevel() [L505] int retValue_acc ; [L508] retValue_acc = waterLevel [L509] return (retValue_acc); [L900] RET, EXPR getWaterLevel() [L900] tmp = getWaterLevel() [L902] COND FALSE !(tmp == 0) [L146] RET __utac_acc__Specification4_spec__1() [L103] RET timeShift() [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) [L88] CALL startSystem() [L320] systemActive = 1 [L88] RET startSystem() [L103] CALL timeShift() [L131] COND TRUE \read(pumpRunning) [L133] CALL lowerWaterLevel() [L440] COND TRUE waterLevel > 0 [L441] waterLevel = waterLevel - 1 [L133] RET lowerWaterLevel() [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L186] int tmp ; [L189] COND TRUE \read(pumpRunning) [L191] CALL, EXPR isMethaneAlarm() [L227] int retValue_acc ; [L231] CALL, EXPR isMethaneLevelCritical() [L473] int retValue_acc ; [L476] retValue_acc = methaneLevelCritical [L477] return (retValue_acc); [L231] RET, EXPR isMethaneLevelCritical() [L231] retValue_acc = isMethaneLevelCritical() [L233] return (retValue_acc); [L191] RET, EXPR isMethaneAlarm() [L191] tmp = isMethaneAlarm() [L193] COND FALSE !(\read(tmp)) [L199] CALL processEnvironment__wrappee__highWaterSensor() [L160] int tmp ; [L163] COND FALSE !(! pumpRunning) [L178] FCALL processEnvironment__wrappee__base() [L199] RET processEnvironment__wrappee__highWaterSensor() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L895] int tmp ; [L896] int tmp___0 ; [L900] CALL, EXPR getWaterLevel() [L505] int retValue_acc ; [L508] retValue_acc = waterLevel [L509] return (retValue_acc); [L900] RET, EXPR getWaterLevel() [L900] tmp = getWaterLevel() [L902] COND TRUE tmp == 0 [L904] CALL, EXPR isPumpRunning() [L238] int retValue_acc ; [L241] retValue_acc = pumpRunning [L242] return (retValue_acc); [L904] RET, EXPR isPumpRunning() [L904] tmp___0 = isPumpRunning() [L906] COND TRUE \read(tmp___0) [L908] CALL __automaton_fail() [L329] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 628 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 57.9s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 48.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2361 SDtfs, 7593 SDslu, 6111 SDs, 0 SdLazy, 13827 SolverSat, 2948 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 525 GetRequests, 308 SyntacticMatches, 7 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1797 ImplicationChecksByTransitivity, 22.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1659occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 2028 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...