/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_product07.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:03:44,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:03:44,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:03:44,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:03:44,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:03:44,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:03:44,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:03:44,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:03:44,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:03:44,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:03:44,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:03:44,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:03:44,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:03:44,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:03:44,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:03:44,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:03:44,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:03:44,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:03:44,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:03:44,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:03:44,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:03:44,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:03:44,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:03:44,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:03:44,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 18:03:44,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 18:03:44,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 18:03:44,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 18:03:44,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 18:03:44,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 18:03:44,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 18:03:44,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 18:03:44,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 18:03:44,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 18:03:44,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 18:03:44,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 18:03:44,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 18:03:44,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 18:03:44,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:03:44,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:03:44,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:03:44,266 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 18:03:44,275 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:03:44,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:03:44,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:03:44,277 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:03:44,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:03:44,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:03:44,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:03:44,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:03:44,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:03:44,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:03:44,278 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:03:44,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:03:44,279 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:03:44,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:03:44,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:03:44,279 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:03:44,280 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:03:44,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:03:44,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:03:44,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:03:44,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:03:44,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:03:44,281 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:03:44,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:03:44,565 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:03:44,569 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:03:44,570 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:03:44,571 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:03:44,572 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product07.cil.c [2020-08-22 18:03:44,652 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a21ce1982/219b608c4d80474daec2db87f2e7253b/FLAG0f9349534 [2020-08-22 18:03:45,144 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:03:45,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product07.cil.c [2020-08-22 18:03:45,157 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a21ce1982/219b608c4d80474daec2db87f2e7253b/FLAG0f9349534 [2020-08-22 18:03:45,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a21ce1982/219b608c4d80474daec2db87f2e7253b [2020-08-22 18:03:45,490 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:03:45,492 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:03:45,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:03:45,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:03:45,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:03:45,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:03:45" (1/1) ... [2020-08-22 18:03:45,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1001a87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:45, skipping insertion in model container [2020-08-22 18:03:45,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:03:45" (1/1) ... [2020-08-22 18:03:45,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:03:45,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:03:45,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:03:45,955 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:03:46,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:03:46,171 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:03:46,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:46 WrapperNode [2020-08-22 18:03:46,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:03:46,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:03:46,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:03:46,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:03:46,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:46" (1/1) ... [2020-08-22 18:03:46,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:46" (1/1) ... [2020-08-22 18:03:46,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:46" (1/1) ... [2020-08-22 18:03:46,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:46" (1/1) ... [2020-08-22 18:03:46,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:46" (1/1) ... [2020-08-22 18:03:46,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:46" (1/1) ... [2020-08-22 18:03:46,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:46" (1/1) ... [2020-08-22 18:03:46,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:03:46,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:03:46,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:03:46,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:03:46,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:46" (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 18:03:46,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:03:46,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:03:46,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 18:03:46,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 18:03:46,334 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 18:03:46,334 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 18:03:46,334 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 18:03:46,334 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 18:03:46,335 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 18:03:46,335 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 18:03:46,335 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 18:03:46,335 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 18:03:46,335 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:03:46,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 18:03:46,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 18:03:46,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 18:03:46,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 18:03:46,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 18:03:46,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 18:03:46,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:03:46,337 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 18:03:46,338 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 18:03:46,340 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 18:03:46,340 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 18:03:46,341 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 18:03:46,341 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 18:03:46,341 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 18:03:46,341 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 18:03:46,341 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 18:03:46,341 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 18:03:46,341 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 18:03:46,342 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 18:03:46,342 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 18:03:46,342 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 18:03:46,342 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 18:03:46,342 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 18:03:46,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:03:46,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:03:46,344 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 18:03:46,344 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 18:03:46,344 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 18:03:46,345 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 18:03:46,345 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 18:03:46,345 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 18:03:46,345 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 18:03:46,345 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 18:03:46,345 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 18:03:46,346 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 18:03:46,346 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 18:03:46,346 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 18:03:46,346 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 18:03:46,346 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 18:03:46,346 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 18:03:46,346 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:03:46,347 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 18:03:46,347 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 18:03:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 18:03:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 18:03:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 18:03:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 18:03:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:03:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 18:03:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 18:03:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:03:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 18:03:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 18:03:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:03:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 18:03:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 18:03:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:03:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 18:03:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 18:03:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 18:03:46,351 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 18:03:46,351 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:03:46,351 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 18:03:46,351 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 18:03:46,351 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 18:03:46,352 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 18:03:46,352 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 18:03:46,353 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 18:03:46,353 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 18:03:46,353 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 18:03:46,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:03:46,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 18:03:46,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:03:47,422 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:03:47,422 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 18:03:47,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:03:47 BoogieIcfgContainer [2020-08-22 18:03:47,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:03:47,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:03:47,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:03:47,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:03:47,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:03:45" (1/3) ... [2020-08-22 18:03:47,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d7af0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:03:47, skipping insertion in model container [2020-08-22 18:03:47,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:46" (2/3) ... [2020-08-22 18:03:47,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d7af0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:03:47, skipping insertion in model container [2020-08-22 18:03:47,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:03:47" (3/3) ... [2020-08-22 18:03:47,437 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product07.cil.c [2020-08-22 18:03:47,445 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:03:47,451 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:03:47,463 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:03:47,482 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:03:47,482 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:03:47,483 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:03:47,483 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:03:47,483 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:03:47,483 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:03:47,483 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:03:47,484 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:03:47,504 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states. [2020-08-22 18:03:47,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-22 18:03:47,524 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:03:47,525 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 18:03:47,526 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:03:47,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:03:47,532 INFO L82 PathProgramCache]: Analyzing trace with hash 957582246, now seen corresponding path program 1 times [2020-08-22 18:03:47,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:03:47,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487728542] [2020-08-22 18:03:47,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:03:47,599 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:03:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:48,219 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:03:48,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:03:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:48,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:03:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:48,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:03:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:48,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:03:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:48,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:03:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:48,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 18:03:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:48,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:03:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:48,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 18:03:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:48,441 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 18:03:48,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487728542] [2020-08-22 18:03:48,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:03:48,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:03:48,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882145739] [2020-08-22 18:03:48,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:03:48,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:03:48,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:03:48,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:03:48,477 INFO L87 Difference]: Start difference. First operand 281 states. Second operand 3 states. [2020-08-22 18:03:49,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:03:49,874 INFO L93 Difference]: Finished difference Result 427 states and 514 transitions. [2020-08-22 18:03:49,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:03:49,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-08-22 18:03:49,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:03:49,905 INFO L225 Difference]: With dead ends: 427 [2020-08-22 18:03:49,905 INFO L226 Difference]: Without dead ends: 271 [2020-08-22 18:03:49,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:03:49,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-08-22 18:03:50,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 230. [2020-08-22 18:03:50,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-08-22 18:03:50,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 250 transitions. [2020-08-22 18:03:50,031 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 250 transitions. Word has length 153 [2020-08-22 18:03:50,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:03:50,032 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 250 transitions. [2020-08-22 18:03:50,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:03:50,032 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 250 transitions. [2020-08-22 18:03:50,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 18:03:50,036 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:03:50,037 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 18:03:50,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:03:50,037 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:03:50,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:03:50,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1482403721, now seen corresponding path program 1 times [2020-08-22 18:03:50,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:03:50,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243802540] [2020-08-22 18:03:50,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:03:50,042 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:03:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:50,407 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:03:50,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:03:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:50,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:03:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:50,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:03:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:50,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:03:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:50,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:03:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:50,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 18:03:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:50,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 18:03:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:50,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 18:03:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:50,525 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 18:03:50,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243802540] [2020-08-22 18:03:50,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:03:50,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:03:50,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435781224] [2020-08-22 18:03:50,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:03:50,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:03:50,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:03:50,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:03:50,530 INFO L87 Difference]: Start difference. First operand 230 states and 250 transitions. Second operand 4 states. [2020-08-22 18:03:51,134 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:03:51,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:03:51,894 INFO L93 Difference]: Finished difference Result 338 states and 381 transitions. [2020-08-22 18:03:51,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:03:51,895 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-08-22 18:03:51,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:03:51,900 INFO L225 Difference]: With dead ends: 338 [2020-08-22 18:03:51,901 INFO L226 Difference]: Without dead ends: 254 [2020-08-22 18:03:51,903 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 18:03:51,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-22 18:03:51,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 220. [2020-08-22 18:03:51,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-22 18:03:51,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 237 transitions. [2020-08-22 18:03:51,976 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 237 transitions. Word has length 154 [2020-08-22 18:03:51,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:03:51,976 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 237 transitions. [2020-08-22 18:03:51,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:03:51,977 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 237 transitions. [2020-08-22 18:03:51,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-22 18:03:51,979 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:03:51,980 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] [2020-08-22 18:03:51,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:03:51,980 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:03:51,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:03:51,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1724777335, now seen corresponding path program 1 times [2020-08-22 18:03:51,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:03:51,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776469085] [2020-08-22 18:03:51,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:03:51,984 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:03:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:52,399 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:03:52,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:03:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:52,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:03:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:52,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:03:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:52,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:03:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:52,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:03:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:52,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:03:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:52,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 18:03:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:52,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 18:03:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:52,537 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 18:03:52,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776469085] [2020-08-22 18:03:52,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:03:52,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 18:03:52,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545113364] [2020-08-22 18:03:52,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 18:03:52,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:03:52,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 18:03:52,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:03:52,540 INFO L87 Difference]: Start difference. First operand 220 states and 237 transitions. Second operand 9 states. [2020-08-22 18:03:52,984 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:03:53,315 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:03:53,552 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:03:53,790 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:03:54,042 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:03:54,304 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:03:55,194 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:03:56,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:03:56,910 INFO L93 Difference]: Finished difference Result 578 states and 668 transitions. [2020-08-22 18:03:56,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 18:03:56,911 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 163 [2020-08-22 18:03:56,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:03:56,923 INFO L225 Difference]: With dead ends: 578 [2020-08-22 18:03:56,927 INFO L226 Difference]: Without dead ends: 468 [2020-08-22 18:03:56,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-08-22 18:03:56,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2020-08-22 18:03:57,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 405. [2020-08-22 18:03:57,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-08-22 18:03:57,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 454 transitions. [2020-08-22 18:03:57,156 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 454 transitions. Word has length 163 [2020-08-22 18:03:57,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:03:57,157 INFO L479 AbstractCegarLoop]: Abstraction has 405 states and 454 transitions. [2020-08-22 18:03:57,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 18:03:57,157 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 454 transitions. [2020-08-22 18:03:57,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-08-22 18:03:57,160 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:03:57,160 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] [2020-08-22 18:03:57,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:03:57,160 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:03:57,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:03:57,161 INFO L82 PathProgramCache]: Analyzing trace with hash 775852866, now seen corresponding path program 1 times [2020-08-22 18:03:57,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:03:57,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988080922] [2020-08-22 18:03:57,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:03:57,164 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:03:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:57,423 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:03:57,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:03:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:57,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:03:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:57,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:03:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:57,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:03:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:57,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:03:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:57,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 18:03:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:57,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:03:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:57,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 18:03:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:57,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 18:03:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:57,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 18:03:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:03:57,558 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 18:03:57,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988080922] [2020-08-22 18:03:57,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:03:57,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 18:03:57,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31680997] [2020-08-22 18:03:57,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 18:03:57,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:03:57,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 18:03:57,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:03:57,564 INFO L87 Difference]: Start difference. First operand 405 states and 454 transitions. Second operand 9 states. [2020-08-22 18:03:58,022 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:03:59,979 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:00,347 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:04:00,620 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:00,866 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:04:01,093 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:04:01,319 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:01,557 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:02,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:02,265 INFO L93 Difference]: Finished difference Result 1162 states and 1453 transitions. [2020-08-22 18:04:02,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 18:04:02,265 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2020-08-22 18:04:02,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:02,277 INFO L225 Difference]: With dead ends: 1162 [2020-08-22 18:04:02,278 INFO L226 Difference]: Without dead ends: 867 [2020-08-22 18:04:02,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-08-22 18:04:02,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2020-08-22 18:04:02,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 679. [2020-08-22 18:04:02,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2020-08-22 18:04:02,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 785 transitions. [2020-08-22 18:04:02,549 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 785 transitions. Word has length 171 [2020-08-22 18:04:02,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:02,549 INFO L479 AbstractCegarLoop]: Abstraction has 679 states and 785 transitions. [2020-08-22 18:04:02,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 18:04:02,550 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 785 transitions. [2020-08-22 18:04:02,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-08-22 18:04:02,554 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:02,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:04:02,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:04:02,555 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:02,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:02,555 INFO L82 PathProgramCache]: Analyzing trace with hash 615873622, now seen corresponding path program 1 times [2020-08-22 18:04:02,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:02,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214077731] [2020-08-22 18:04:02,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:02,558 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:02,808 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:02,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:02,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:02,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:02,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:02,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:02,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 18:04:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:02,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:04:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:02,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 18:04:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:02,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:04:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:02,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 18:04:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:02,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 18:04:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:02,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-22 18:04:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:03,003 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 18:04:03,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214077731] [2020-08-22 18:04:03,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:03,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 18:04:03,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392448309] [2020-08-22 18:04:03,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 18:04:03,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:03,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 18:04:03,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:04:03,006 INFO L87 Difference]: Start difference. First operand 679 states and 785 transitions. Second operand 6 states. [2020-08-22 18:04:03,552 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:04:04,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:04,408 INFO L93 Difference]: Finished difference Result 1141 states and 1356 transitions. [2020-08-22 18:04:04,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 18:04:04,409 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2020-08-22 18:04:04,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:04,432 INFO L225 Difference]: With dead ends: 1141 [2020-08-22 18:04:04,432 INFO L226 Difference]: Without dead ends: 572 [2020-08-22 18:04:04,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 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 18:04:04,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-08-22 18:04:04,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 542. [2020-08-22 18:04:04,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2020-08-22 18:04:04,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 593 transitions. [2020-08-22 18:04:04,660 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 593 transitions. Word has length 181 [2020-08-22 18:04:04,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:04,660 INFO L479 AbstractCegarLoop]: Abstraction has 542 states and 593 transitions. [2020-08-22 18:04:04,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 18:04:04,661 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 593 transitions. [2020-08-22 18:04:04,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-22 18:04:04,664 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:04,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:04:04,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 18:04:04,664 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:04,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:04,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1861287888, now seen corresponding path program 1 times [2020-08-22 18:04:04,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:04,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053212563] [2020-08-22 18:04:04,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:04,668 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:04:04,728 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:04:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:04:04,781 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:04:04,943 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:04:04,944 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:04:04,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 18:04:04,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:04:04 BoogieIcfgContainer [2020-08-22 18:04:04,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:04:04,972 INFO L168 Benchmark]: Toolchain (without parser) took 19480.49 ms. Allocated memory was 146.3 MB in the beginning and 653.3 MB in the end (delta: 507.0 MB). Free memory was 102.6 MB in the beginning and 539.1 MB in the end (delta: -436.5 MB). Peak memory consumption was 70.5 MB. Max. memory is 7.1 GB. [2020-08-22 18:04:04,973 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.3 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 18:04:04,974 INFO L168 Benchmark]: CACSL2BoogieTranslator took 678.22 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 102.2 MB in the beginning and 173.9 MB in the end (delta: -71.7 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:04:04,975 INFO L168 Benchmark]: Boogie Preprocessor took 84.79 ms. Allocated memory is still 203.4 MB. Free memory was 173.9 MB in the beginning and 169.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-22 18:04:04,976 INFO L168 Benchmark]: RCFGBuilder took 1171.48 ms. Allocated memory was 203.4 MB in the beginning and 237.5 MB in the end (delta: 34.1 MB). Free memory was 169.8 MB in the beginning and 183.2 MB in the end (delta: -13.4 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. [2020-08-22 18:04:04,977 INFO L168 Benchmark]: TraceAbstraction took 17540.42 ms. Allocated memory was 237.5 MB in the beginning and 653.3 MB in the end (delta: 415.8 MB). Free memory was 183.2 MB in the beginning and 539.1 MB in the end (delta: -355.9 MB). Peak memory consumption was 59.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:04:04,980 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.3 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 678.22 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 102.2 MB in the beginning and 173.9 MB in the end (delta: -71.7 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.79 ms. Allocated memory is still 203.4 MB. Free memory was 173.9 MB in the beginning and 169.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1171.48 ms. Allocated memory was 203.4 MB in the beginning and 237.5 MB in the end (delta: 34.1 MB). Free memory was 169.8 MB in the beginning and 183.2 MB in the end (delta: -13.4 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17540.42 ms. Allocated memory was 237.5 MB in the beginning and 653.3 MB in the end (delta: 415.8 MB). Free memory was 183.2 MB in the beginning and 539.1 MB in the end (delta: -355.9 MB). Peak memory consumption was 59.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L87] int cleanupTimeShifts = 4; [L357] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L596] int pumpRunning = 0; [L597] int systemActive = 1; [L811] int waterLevel = 1; [L812] int methaneLevelCritical = 0; [L165] int retValue_acc ; [L166] int tmp ; [L170] FCALL select_helpers() [L171] FCALL select_features() [L172] CALL, EXPR valid_product() [L78] int retValue_acc ; [L81] retValue_acc = 1 [L82] return (retValue_acc); [L172] RET, EXPR valid_product() [L172] tmp = valid_product() [L174] COND TRUE \read(tmp) [L176] FCALL setup() [L177] CALL runTest() [L159] CALL test() [L745] int splverifierCounter ; [L746] int tmp ; [L747] int tmp___0 ; [L748] int tmp___1 ; [L749] int tmp___2 ; [L752] splverifierCounter = 0 [L754] COND TRUE 1 [L756] COND TRUE splverifierCounter < 4 [L762] tmp = __VERIFIER_nondet_int() [L764] COND TRUE \read(tmp) [L766] CALL waterRise() [L829] COND TRUE waterLevel < 2 [L830] waterLevel = waterLevel + 1 [L766] RET waterRise() [L772] tmp___0 = __VERIFIER_nondet_int() [L774] COND FALSE !(\read(tmp___0)) [L782] tmp___2 = __VERIFIER_nondet_int() [L784] COND TRUE \read(tmp___2) [L799] CALL timeShift() [L603] COND FALSE !(\read(pumpRunning)) [L610] COND TRUE \read(systemActive) [L612] CALL processEnvironment() [L632] int tmp ; [L635] COND FALSE !(\read(pumpRunning)) [L650] FCALL processEnvironment__wrappee__base() [L612] RET processEnvironment() [L618] CALL __utac_acc__Specification3_spec__1() [L558] int tmp ; [L559] int tmp___0 ; [L560] int tmp___1 ; [L564] CALL, EXPR isMethaneLevelCritical() [L850] int retValue_acc ; [L853] retValue_acc = methaneLevelCritical [L854] return (retValue_acc); [L564] RET, EXPR isMethaneLevelCritical() [L564] tmp = isMethaneLevelCritical() [L566] COND FALSE !(\read(tmp)) [L570] CALL, EXPR getWaterLevel() [L882] int retValue_acc ; [L885] retValue_acc = waterLevel [L886] return (retValue_acc); [L570] RET, EXPR getWaterLevel() [L570] tmp___0 = getWaterLevel() [L572] COND TRUE tmp___0 == 2 [L574] CALL, EXPR isPumpRunning() [L684] int retValue_acc ; [L687] retValue_acc = pumpRunning [L688] return (retValue_acc); [L574] RET, EXPR isPumpRunning() [L574] tmp___1 = isPumpRunning() [L576] COND FALSE !(\read(tmp___1)) [L580] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 596 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 13.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1057 SDtfs, 1491 SDslu, 1324 SDs, 0 SdLazy, 2852 SolverSat, 493 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=679occurred 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: 0.8s AutomataMinimizationTime, 5 MinimizatonAttempts, 356 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...