/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_spec3_product04.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:03:35,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:03:35,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:03:35,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:03:35,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:03:35,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:03:35,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:03:35,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:03:35,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:03:35,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:03:35,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:03:35,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:03:35,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:03:35,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:03:35,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:03:35,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:03:35,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:03:35,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:03:35,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:03:35,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:03:35,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:03:35,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:03:35,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:03:35,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:03:35,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 18:03:35,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 18:03:35,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 18:03:35,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 18:03:35,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 18:03:35,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 18:03:35,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 18:03:35,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 18:03:35,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 18:03:35,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 18:03:35,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 18:03:35,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 18:03:35,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 18:03:35,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 18:03:35,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:03:35,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:03:35,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:03:35,135 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 18:03:35,160 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:03:35,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:03:35,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:03:35,165 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:03:35,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:03:35,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:03:35,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:03:35,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:03:35,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:03:35,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:03:35,166 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:03:35,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:03:35,166 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:03:35,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:03:35,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:03:35,167 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:03:35,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:03:35,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:03:35,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:03:35,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:03:35,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:03:35,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:03:35,174 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:03:35,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:03:35,492 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:03:35,495 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:03:35,497 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:03:35,497 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:03:35,498 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product04.cil.c [2020-08-22 18:03:35,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bac8bd17a/d0f0399e0f7541df982a34dcbf7c2f23/FLAG54e177f05 [2020-08-22 18:03:36,101 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:03:36,101 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product04.cil.c [2020-08-22 18:03:36,116 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bac8bd17a/d0f0399e0f7541df982a34dcbf7c2f23/FLAG54e177f05 [2020-08-22 18:03:36,436 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bac8bd17a/d0f0399e0f7541df982a34dcbf7c2f23 [2020-08-22 18:03:36,446 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:03:36,448 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:03:36,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:03:36,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:03:36,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:03:36,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:03:36" (1/1) ... [2020-08-22 18:03:36,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@662e83d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:36, skipping insertion in model container [2020-08-22 18:03:36,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:03:36" (1/1) ... [2020-08-22 18:03:36,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:03:36,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:03:36,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:03:36,974 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:03:37,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:03:37,077 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:03:37,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:37 WrapperNode [2020-08-22 18:03:37,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:03:37,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:03:37,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:03:37,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:03:37,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:37" (1/1) ... [2020-08-22 18:03:37,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:37" (1/1) ... [2020-08-22 18:03:37,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:37" (1/1) ... [2020-08-22 18:03:37,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:37" (1/1) ... [2020-08-22 18:03:37,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:37" (1/1) ... [2020-08-22 18:03:37,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:37" (1/1) ... [2020-08-22 18:03:37,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:37" (1/1) ... [2020-08-22 18:03:37,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:03:37,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:03:37,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:03:37,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:03:37,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:37" (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 18:03:37,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:03:37,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:03:37,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 18:03:37,244 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 18:03:37,244 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 18:03:37,245 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 18:03:37,245 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 18:03:37,245 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 18:03:37,245 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 18:03:37,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 18:03:37,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 18:03:37,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 18:03:37,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 18:03:37,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 18:03:37,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 18:03:37,246 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 18:03:37,246 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 18:03:37,247 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 18:03:37,247 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 18:03:37,247 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 18:03:37,247 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 18:03:37,247 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 18:03:37,247 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 18:03:37,248 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:03:37,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 18:03:37,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:03:37,248 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 18:03:37,248 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 18:03:37,248 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 18:03:37,249 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 18:03:37,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 18:03:37,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 18:03:37,249 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 18:03:37,249 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 18:03:37,249 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 18:03:37,250 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 18:03:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:03:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:03:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 18:03:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 18:03:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 18:03:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 18:03:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 18:03:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 18:03:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 18:03:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:03:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 18:03:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 18:03:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 18:03:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 18:03:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 18:03:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 18:03:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:03:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 18:03:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 18:03:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:03:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 18:03:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 18:03:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:03:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 18:03:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 18:03:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 18:03:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 18:03:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 18:03:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 18:03:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 18:03:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 18:03:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 18:03:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 18:03:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 18:03:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 18:03:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 18:03:37,256 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 18:03:37,256 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:03:37,256 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 18:03:37,256 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 18:03:37,256 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:03:37,257 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 18:03:37,257 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 18:03:37,257 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 18:03:37,257 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 18:03:37,257 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 18:03:37,257 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 18:03:37,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:03:37,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 18:03:37,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:03:38,296 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:03:38,297 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 18:03:38,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:03:38 BoogieIcfgContainer [2020-08-22 18:03:38,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:03:38,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:03:38,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:03:38,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:03:38,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:03:36" (1/3) ... [2020-08-22 18:03:38,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42aaf725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:03:38, skipping insertion in model container [2020-08-22 18:03:38,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:37" (2/3) ... [2020-08-22 18:03:38,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42aaf725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:03:38, skipping insertion in model container [2020-08-22 18:03:38,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:03:38" (3/3) ... [2020-08-22 18:03:38,312 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product04.cil.c [2020-08-22 18:03:38,322 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:03:38,331 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:03:38,344 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:03:38,361 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:03:38,361 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:03:38,361 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:03:38,362 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:03:38,362 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:03:38,362 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:03:38,362 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:03:38,362 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:03:38,382 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states. [2020-08-22 18:03:38,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-22 18:03:38,402 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:03:38,404 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] [2020-08-22 18:03:38,404 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:03:38,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:03:38,411 INFO L82 PathProgramCache]: Analyzing trace with hash 713311147, now seen corresponding path program 1 times [2020-08-22 18:03:38,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:03:38,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355235977] [2020-08-22 18:03:38,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:03:38,474 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:03:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:39,126 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:03:39,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:03:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:39,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:03:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:39,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:03:39,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:39,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:03:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:39,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:03:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:39,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 18:03:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:39,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:03:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:39,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 18:03:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:39,329 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 18:03:39,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355235977] [2020-08-22 18:03:39,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:03:39,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:03:39,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562315115] [2020-08-22 18:03:39,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:03:39,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:03:39,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:03:39,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:03:39,357 INFO L87 Difference]: Start difference. First operand 271 states. Second operand 3 states. [2020-08-22 18:03:40,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:03:40,532 INFO L93 Difference]: Finished difference Result 394 states and 471 transitions. [2020-08-22 18:03:40,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:03:40,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-08-22 18:03:40,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:03:40,552 INFO L225 Difference]: With dead ends: 394 [2020-08-22 18:03:40,552 INFO L226 Difference]: Without dead ends: 254 [2020-08-22 18:03:40,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 18:03:40,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-22 18:03:40,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 214. [2020-08-22 18:03:40,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-08-22 18:03:40,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 229 transitions. [2020-08-22 18:03:40,673 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 229 transitions. Word has length 153 [2020-08-22 18:03:40,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:03:40,674 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 229 transitions. [2020-08-22 18:03:40,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:03:40,675 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 229 transitions. [2020-08-22 18:03:40,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 18:03:40,679 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:03:40,680 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] [2020-08-22 18:03:40,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:03:40,680 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:03:40,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:03:40,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1000146475, now seen corresponding path program 1 times [2020-08-22 18:03:40,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:03:40,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707041587] [2020-08-22 18:03:40,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:03:40,685 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:03:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:41,012 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:03:41,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:03:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:41,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:03:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:41,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:03:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:41,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:03:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:41,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:03:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:41,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 18:03:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:41,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 18:03:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:41,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 18:03:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:41,156 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 18:03:41,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707041587] [2020-08-22 18:03:41,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:03:41,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:03:41,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097197332] [2020-08-22 18:03:41,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:03:41,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:03:41,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:03:41,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:03:41,160 INFO L87 Difference]: Start difference. First operand 214 states and 229 transitions. Second operand 4 states. [2020-08-22 18:03:41,748 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:03:42,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:03:42,364 INFO L93 Difference]: Finished difference Result 298 states and 332 transitions. [2020-08-22 18:03:42,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:03:42,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-08-22 18:03:42,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:03:42,371 INFO L225 Difference]: With dead ends: 298 [2020-08-22 18:03:42,371 INFO L226 Difference]: Without dead ends: 237 [2020-08-22 18:03:42,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 18:03:42,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-08-22 18:03:42,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 204. [2020-08-22 18:03:42,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-08-22 18:03:42,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 216 transitions. [2020-08-22 18:03:42,433 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 216 transitions. Word has length 154 [2020-08-22 18:03:42,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:03:42,434 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 216 transitions. [2020-08-22 18:03:42,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:03:42,434 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 216 transitions. [2020-08-22 18:03:42,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-08-22 18:03:42,437 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:03:42,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:03:42,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:03:42,438 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:03:42,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:03:42,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1955216043, now seen corresponding path program 1 times [2020-08-22 18:03:42,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:03:42,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525190621] [2020-08-22 18:03:42,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:03:42,442 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:03:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:42,728 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:03:42,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:03:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:42,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:03:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:42,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:03:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:42,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:03:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:42,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:03:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:42,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 18:03:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:42,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 18:03:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:42,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 18:03:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:42,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-22 18:03:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:42,891 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 18:03:42,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525190621] [2020-08-22 18:03:42,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:03:42,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 18:03:42,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342900304] [2020-08-22 18:03:42,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 18:03:42,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:03:42,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 18:03:42,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 18:03:42,897 INFO L87 Difference]: Start difference. First operand 204 states and 216 transitions. Second operand 10 states. [2020-08-22 18:03:43,355 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:03:43,690 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:03:43,936 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 18:03:44,168 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:03:44,397 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:03:44,641 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:03:45,497 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:03:47,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:03:47,001 INFO L93 Difference]: Finished difference Result 550 states and 638 transitions. [2020-08-22 18:03:47,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 18:03:47,002 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-08-22 18:03:47,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:03:47,008 INFO L225 Difference]: With dead ends: 550 [2020-08-22 18:03:47,008 INFO L226 Difference]: Without dead ends: 456 [2020-08-22 18:03:47,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-08-22 18:03:47,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2020-08-22 18:03:47,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 357. [2020-08-22 18:03:47,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-08-22 18:03:47,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 392 transitions. [2020-08-22 18:03:47,147 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 392 transitions. Word has length 167 [2020-08-22 18:03:47,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:03:47,148 INFO L479 AbstractCegarLoop]: Abstraction has 357 states and 392 transitions. [2020-08-22 18:03:47,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 18:03:47,148 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 392 transitions. [2020-08-22 18:03:47,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-22 18:03:47,152 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:03:47,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:03:47,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:03:47,153 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:03:47,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:03:47,153 INFO L82 PathProgramCache]: Analyzing trace with hash 546702602, now seen corresponding path program 1 times [2020-08-22 18:03:47,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:03:47,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281961477] [2020-08-22 18:03:47,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:03:47,157 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:03:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:47,548 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:03:47,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:03:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:47,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:03:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:47,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:03:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:47,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:03:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:47,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:03:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:47,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 18:03:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:47,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:03:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:47,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-22 18:03:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:47,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-22 18:03:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:47,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-22 18:03:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:47,765 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 18:03:47,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281961477] [2020-08-22 18:03:47,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:03:47,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 18:03:47,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155215259] [2020-08-22 18:03:47,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 18:03:47,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:03:47,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 18:03:47,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:03:47,770 INFO L87 Difference]: Start difference. First operand 357 states and 392 transitions. Second operand 9 states. [2020-08-22 18:03:48,287 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:03:49,631 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:03:49,890 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:03:50,156 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:03:50,458 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:03:50,682 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:03:50,936 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:03:51,157 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:03:51,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:03:51,637 INFO L93 Difference]: Finished difference Result 909 states and 1077 transitions. [2020-08-22 18:03:51,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 18:03:51,638 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 170 [2020-08-22 18:03:51,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:03:51,645 INFO L225 Difference]: With dead ends: 909 [2020-08-22 18:03:51,645 INFO L226 Difference]: Without dead ends: 662 [2020-08-22 18:03:51,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-08-22 18:03:51,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2020-08-22 18:03:51,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 579. [2020-08-22 18:03:51,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-08-22 18:03:51,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 655 transitions. [2020-08-22 18:03:51,841 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 655 transitions. Word has length 170 [2020-08-22 18:03:51,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:03:51,842 INFO L479 AbstractCegarLoop]: Abstraction has 579 states and 655 transitions. [2020-08-22 18:03:51,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 18:03:51,842 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 655 transitions. [2020-08-22 18:03:51,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-22 18:03:51,846 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:03:51,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:03:51,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:03:51,846 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:03:51,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:03:51,847 INFO L82 PathProgramCache]: Analyzing trace with hash 758250360, now seen corresponding path program 1 times [2020-08-22 18:03:51,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:03:51,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251714944] [2020-08-22 18:03:51,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:03:51,850 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:03:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:52,179 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:03:52,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:03:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:52,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:03:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:52,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:03:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:52,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:03:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:52,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:03:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:52,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 18:03:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:52,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 18:03:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:52,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 18:03:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:52,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 18:03:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:52,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-22 18:03:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:52,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-22 18:03:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:52,323 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 18:03:52,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251714944] [2020-08-22 18:03:52,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:03:52,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 18:03:52,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764004519] [2020-08-22 18:03:52,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 18:03:52,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:03:52,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 18:03:52,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:03:52,327 INFO L87 Difference]: Start difference. First operand 579 states and 655 transitions. Second operand 6 states. [2020-08-22 18:03:52,981 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:03:54,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:03:54,101 INFO L93 Difference]: Finished difference Result 1068 states and 1252 transitions. [2020-08-22 18:03:54,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 18:03:54,102 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2020-08-22 18:03:54,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:03:54,112 INFO L225 Difference]: With dead ends: 1068 [2020-08-22 18:03:54,113 INFO L226 Difference]: Without dead ends: 599 [2020-08-22 18:03:54,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 18:03:54,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2020-08-22 18:03:54,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 530. [2020-08-22 18:03:54,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2020-08-22 18:03:54,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 581 transitions. [2020-08-22 18:03:54,338 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 581 transitions. Word has length 175 [2020-08-22 18:03:54,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:03:54,339 INFO L479 AbstractCegarLoop]: Abstraction has 530 states and 581 transitions. [2020-08-22 18:03:54,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 18:03:54,339 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 581 transitions. [2020-08-22 18:03:54,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-22 18:03:54,344 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:03:54,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:03:54,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 18:03:54,345 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:03:54,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:03:54,345 INFO L82 PathProgramCache]: Analyzing trace with hash 194624342, now seen corresponding path program 1 times [2020-08-22 18:03:54,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:03:54,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308871114] [2020-08-22 18:03:54,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:03:54,349 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:03:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:03:54,436 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:03:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:03:54,514 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:03:54,721 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:03:54,721 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:03:54,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 18:03:54,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:03:54 BoogieIcfgContainer [2020-08-22 18:03:54,745 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:03:54,747 INFO L168 Benchmark]: Toolchain (without parser) took 18299.73 ms. Allocated memory was 139.5 MB in the beginning and 565.2 MB in the end (delta: 425.7 MB). Free memory was 102.8 MB in the beginning and 112.4 MB in the end (delta: -9.5 MB). Peak memory consumption was 416.2 MB. Max. memory is 7.1 GB. [2020-08-22 18:03:54,748 INFO L168 Benchmark]: CDTParser took 0.87 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 18:03:54,749 INFO L168 Benchmark]: CACSL2BoogieTranslator took 628.88 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 171.5 MB in the end (delta: -68.9 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-08-22 18:03:54,750 INFO L168 Benchmark]: Boogie Preprocessor took 105.21 ms. Allocated memory is still 202.9 MB. Free memory was 171.5 MB in the beginning and 167.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-22 18:03:54,751 INFO L168 Benchmark]: RCFGBuilder took 1119.98 ms. Allocated memory was 202.9 MB in the beginning and 237.0 MB in the end (delta: 34.1 MB). Free memory was 166.8 MB in the beginning and 181.5 MB in the end (delta: -14.7 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. [2020-08-22 18:03:54,751 INFO L168 Benchmark]: TraceAbstraction took 16440.63 ms. Allocated memory was 237.0 MB in the beginning and 565.2 MB in the end (delta: 328.2 MB). Free memory was 181.5 MB in the beginning and 112.4 MB in the end (delta: 69.2 MB). Peak memory consumption was 397.4 MB. Max. memory is 7.1 GB. [2020-08-22 18:03:54,755 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 628.88 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 171.5 MB in the end (delta: -68.9 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.21 ms. Allocated memory is still 202.9 MB. Free memory was 171.5 MB in the beginning and 167.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1119.98 ms. Allocated memory was 202.9 MB in the beginning and 237.0 MB in the end (delta: 34.1 MB). Free memory was 166.8 MB in the beginning and 181.5 MB in the end (delta: -14.7 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16440.63 ms. Allocated memory was 237.0 MB in the beginning and 565.2 MB in the end (delta: 328.2 MB). Free memory was 181.5 MB in the beginning and 112.4 MB in the end (delta: 69.2 MB). Peak memory consumption was 397.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 633]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L46] int waterLevel = 1; [L47] int methaneLevelCritical = 0; [L295] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L530] int cleanupTimeShifts = 4; [L677] int pumpRunning = 0; [L678] int systemActive = 1; [L606] int retValue_acc ; [L607] int tmp ; [L611] FCALL select_helpers() [L612] FCALL select_features() [L613] CALL, EXPR valid_product() [L521] int retValue_acc ; [L524] retValue_acc = 1 [L525] return (retValue_acc); [L613] RET, EXPR valid_product() [L613] tmp = valid_product() [L615] COND TRUE \read(tmp) [L617] FCALL setup() [L618] CALL runTest() [L600] CALL test() [L808] int splverifierCounter ; [L809] int tmp ; [L810] int tmp___0 ; [L811] int tmp___1 ; [L812] int tmp___2 ; [L815] splverifierCounter = 0 [L817] COND TRUE 1 [L819] COND TRUE splverifierCounter < 4 [L825] tmp = __VERIFIER_nondet_int() [L827] COND TRUE \read(tmp) [L829] CALL waterRise() [L64] COND TRUE waterLevel < 2 [L65] waterLevel = waterLevel + 1 [L829] RET waterRise() [L835] tmp___0 = __VERIFIER_nondet_int() [L837] COND FALSE !(\read(tmp___0)) [L845] tmp___2 = __VERIFIER_nondet_int() [L847] COND TRUE \read(tmp___2) [L849] CALL startSystem() [L802] systemActive = 1 [L849] RET startSystem() [L864] CALL timeShift() [L684] COND FALSE !(\read(pumpRunning)) [L691] COND TRUE \read(systemActive) [L693] FCALL processEnvironment() [L699] CALL __utac_acc__Specification3_spec__1() [L640] int tmp ; [L641] int tmp___0 ; [L642] int tmp___1 ; [L646] CALL, EXPR isMethaneLevelCritical() [L85] int retValue_acc ; [L88] retValue_acc = methaneLevelCritical [L89] return (retValue_acc); [L646] RET, EXPR isMethaneLevelCritical() [L646] tmp = isMethaneLevelCritical() [L648] COND FALSE !(\read(tmp)) [L652] CALL, EXPR getWaterLevel() [L117] int retValue_acc ; [L120] retValue_acc = waterLevel [L121] return (retValue_acc); [L652] RET, EXPR getWaterLevel() [L652] tmp___0 = getWaterLevel() [L654] COND TRUE tmp___0 == 2 [L656] CALL, EXPR isPumpRunning() [L739] int retValue_acc ; [L742] retValue_acc = pumpRunning [L743] return (retValue_acc); [L656] RET, EXPR isPumpRunning() [L656] tmp___1 = isPumpRunning() [L658] COND FALSE !(\read(tmp___1)) [L662] CALL __automaton_fail() [L633] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 588 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 12.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 979 SDtfs, 1553 SDslu, 1438 SDs, 0 SdLazy, 2520 SolverSat, 508 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=579occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 324 StatesRemovedByMinimization, 5 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...