/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:22:11,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:22:11,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:22:11,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:22:11,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:22:11,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:22:11,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:22:11,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:22:11,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:22:11,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:22:11,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:22:11,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:22:11,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:22:11,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:22:11,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:22:11,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:22:11,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:22:11,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:22:11,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:22:11,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:22:11,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:22:11,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:22:11,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:22:11,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:22:11,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:22:11,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:22:11,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:22:11,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:22:11,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:22:11,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:22:11,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:22:11,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:22:11,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:22:11,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:22:11,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:22:11,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:22:11,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:22:11,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:22:11,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:22:11,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:22:11,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:22:11,349 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:22:11,374 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:22:11,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:22:11,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:22:11,377 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:22:11,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:22:11,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:22:11,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:22:11,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:22:11,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:22:11,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:22:11,379 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:22:11,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:22:11,379 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:22:11,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:22:11,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:22:11,381 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:22:11,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:22:11,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:22:11,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:22:11,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:22:11,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:22:11,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:22:11,382 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:22:11,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:22:11,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:22:11,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:22:11,769 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:22:11,770 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:22:11,771 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product09.cil.c [2021-02-23 16:22:11,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abe4ab6cc/f0a89df7a52744bba3147cc1f2b6adb9/FLAGab120455a [2021-02-23 16:22:12,531 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:22:12,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product09.cil.c [2021-02-23 16:22:12,551 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abe4ab6cc/f0a89df7a52744bba3147cc1f2b6adb9/FLAGab120455a [2021-02-23 16:22:12,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abe4ab6cc/f0a89df7a52744bba3147cc1f2b6adb9 [2021-02-23 16:22:12,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:22:12,597 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:22:12,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:22:12,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:22:12,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:22:12,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:22:12" (1/1) ... [2021-02-23 16:22:12,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a3602be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:12, skipping insertion in model container [2021-02-23 16:22:12,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:22:12" (1/1) ... [2021-02-23 16:22:12,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:22:12,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:22:12,867 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product09.cil.c[2573,2586] [2021-02-23 16:22:13,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:22:13,046 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:22:13,066 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product09.cil.c[2573,2586] [2021-02-23 16:22:13,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:22:13,156 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:22:13,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:13 WrapperNode [2021-02-23 16:22:13,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:22:13,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:22:13,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:22:13,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:22:13,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:13" (1/1) ... [2021-02-23 16:22:13,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:13" (1/1) ... [2021-02-23 16:22:13,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:13" (1/1) ... [2021-02-23 16:22:13,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:13" (1/1) ... [2021-02-23 16:22:13,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:13" (1/1) ... [2021-02-23 16:22:13,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:13" (1/1) ... [2021-02-23 16:22:13,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:13" (1/1) ... [2021-02-23 16:22:13,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:22:13,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:22:13,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:22:13,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:22:13,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:13" (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 [2021-02-23 16:22:13,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:22:13,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:22:13,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:22:13,363 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:22:13,363 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:22:13,363 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:22:13,363 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:22:13,363 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:22:13,363 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:22:13,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:22:13,364 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:22:13,364 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:22:13,364 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:22:13,364 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2021-02-23 16:22:13,365 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:22:13,365 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:22:13,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:22:13,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:22:13,365 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:22:13,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:22:13,366 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:22:13,366 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:22:13,366 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:22:13,366 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:22:13,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:22:13,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:22:13,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:22:13,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:22:13,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:22:13,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:22:13,367 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:22:13,367 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:22:13,368 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:22:13,368 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:22:13,368 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:22:13,368 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:22:13,368 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:22:13,368 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:22:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:22:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:22:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:22:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:22:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:22:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:22:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:22:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:22:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:22:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:22:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:22:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:22:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:22:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:22:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:22:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:22:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:22:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:22:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:22:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:22:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:22:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:22:13,372 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:22:13,372 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:22:13,372 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:22:13,372 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:22:13,372 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2021-02-23 16:22:13,372 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:22:13,372 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:22:13,372 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:22:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:22:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:22:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:22:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:22:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:22:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:22:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:22:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:22:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:22:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:22:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:22:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:22:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:22:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:22:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:22:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:22:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:22:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:22:14,630 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:22:14,631 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:22:14,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:22:14 BoogieIcfgContainer [2021-02-23 16:22:14,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:22:14,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:22:14,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:22:14,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:22:14,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:22:12" (1/3) ... [2021-02-23 16:22:14,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a5544e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:22:14, skipping insertion in model container [2021-02-23 16:22:14,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:13" (2/3) ... [2021-02-23 16:22:14,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a5544e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:22:14, skipping insertion in model container [2021-02-23 16:22:14,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:22:14" (3/3) ... [2021-02-23 16:22:14,643 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product09.cil.c [2021-02-23 16:22:14,650 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:22:14,658 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:22:14,678 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:22:14,703 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:22:14,703 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:22:14,704 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:22:14,704 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:22:14,704 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:22:14,704 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:22:14,704 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:22:14,704 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:22:14,733 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2021-02-23 16:22:14,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-23 16:22:14,764 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:22:14,766 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] [2021-02-23 16:22:14,766 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:22:14,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:22:14,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1854146296, now seen corresponding path program 1 times [2021-02-23 16:22:14,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:22:14,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789565864] [2021-02-23 16:22:14,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:22:14,905 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:22:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:15,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:15,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:15,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:15,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:15,708 WARN L202 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:22:15,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:22:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:15,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:15,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:15,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:22:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:15,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:15,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:15,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:22:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:15,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:15,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:15,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:22:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:15,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:15,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:15,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:22:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:15,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:15,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:15,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:22:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:15,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:15,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:15,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:22:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:15,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:15,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:15,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:22:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:15,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:15,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:15,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:22:15,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789565864] [2021-02-23 16:22:15,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:22:15,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:22:15,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132868359] [2021-02-23 16:22:15,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:22:15,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:22:15,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:22:15,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:22:15,908 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 3 states. [2021-02-23 16:22:17,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:22:17,199 INFO L93 Difference]: Finished difference Result 371 states and 444 transitions. [2021-02-23 16:22:17,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:22:17,201 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-23 16:22:17,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:22:17,217 INFO L225 Difference]: With dead ends: 371 [2021-02-23 16:22:17,217 INFO L226 Difference]: Without dead ends: 243 [2021-02-23 16:22:17,222 INFO L677 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 [2021-02-23 16:22:17,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-02-23 16:22:17,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 206. [2021-02-23 16:22:17,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2021-02-23 16:22:17,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 220 transitions. [2021-02-23 16:22:17,358 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 220 transitions. Word has length 158 [2021-02-23 16:22:17,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:22:17,359 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 220 transitions. [2021-02-23 16:22:17,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:22:17,359 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 220 transitions. [2021-02-23 16:22:17,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-23 16:22:17,364 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:22:17,364 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] [2021-02-23 16:22:17,365 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:22:17,365 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:22:17,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:22:17,366 INFO L82 PathProgramCache]: Analyzing trace with hash 454730193, now seen corresponding path program 1 times [2021-02-23 16:22:17,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:22:17,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574717990] [2021-02-23 16:22:17,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:22:17,370 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:22:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:17,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:17,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:17,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:17,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:17,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:17,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:17,819 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:22:17,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:22:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:17,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:17,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:17,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:22:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:17,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:17,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:17,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:22:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:17,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:17,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:17,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:22:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:17,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:17,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:17,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:22:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:17,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:17,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:17,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-23 16:22:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:17,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:17,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:17,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:22:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:17,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:17,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:17,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:22:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:17,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:17,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:17,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:22:17,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574717990] [2021-02-23 16:22:17,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:22:17,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:22:17,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451258069] [2021-02-23 16:22:17,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:22:17,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:22:17,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:22:17,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:22:17,934 INFO L87 Difference]: Start difference. First operand 206 states and 220 transitions. Second operand 4 states. [2021-02-23 16:22:18,691 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:22:19,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:22:19,336 INFO L93 Difference]: Finished difference Result 287 states and 318 transitions. [2021-02-23 16:22:19,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:22:19,337 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-23 16:22:19,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:22:19,352 INFO L225 Difference]: With dead ends: 287 [2021-02-23 16:22:19,352 INFO L226 Difference]: Without dead ends: 226 [2021-02-23 16:22:19,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:22:19,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-02-23 16:22:19,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 196. [2021-02-23 16:22:19,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2021-02-23 16:22:19,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 207 transitions. [2021-02-23 16:22:19,439 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 207 transitions. Word has length 159 [2021-02-23 16:22:19,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:22:19,440 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 207 transitions. [2021-02-23 16:22:19,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:22:19,440 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 207 transitions. [2021-02-23 16:22:19,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-23 16:22:19,443 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:22:19,443 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] [2021-02-23 16:22:19,443 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:22:19,444 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:22:19,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:22:19,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1483944557, now seen corresponding path program 1 times [2021-02-23 16:22:19,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:22:19,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212404277] [2021-02-23 16:22:19,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:22:19,448 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:22:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:19,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:19,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:19,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:19,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:19,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:19,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:19,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:19,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:22:19,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:19,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:19,934 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:22:19,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:22:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:19,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:19,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:19,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:19,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:22:20,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:22:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:20,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:20,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:20,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:22:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:20,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:20,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:20,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:22:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:20,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:20,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:20,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:20,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:22:20,045 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:22:20,046 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:22:20,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:22:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:20,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:20,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:20,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:22:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:20,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:20,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:20,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:22:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:20,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:20,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:20,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-23 16:22:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:20,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:20,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:20,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:22:20,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212404277] [2021-02-23 16:22:20,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:22:20,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:22:20,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872868685] [2021-02-23 16:22:20,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:22:20,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:22:20,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:22:20,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:22:20,117 INFO L87 Difference]: Start difference. First operand 196 states and 207 transitions. Second operand 9 states. [2021-02-23 16:22:20,664 WARN L202 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:22:21,102 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:22:21,466 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:22:21,817 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:22:22,208 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:22:22,564 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:22:23,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:22:23,639 INFO L93 Difference]: Finished difference Result 307 states and 343 transitions. [2021-02-23 16:22:23,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:22:23,639 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-23 16:22:23,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:22:23,642 INFO L225 Difference]: With dead ends: 307 [2021-02-23 16:22:23,642 INFO L226 Difference]: Without dead ends: 226 [2021-02-23 16:22:23,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:22:23,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-02-23 16:22:23,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 196. [2021-02-23 16:22:23,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2021-02-23 16:22:23,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 206 transitions. [2021-02-23 16:22:23,725 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 206 transitions. Word has length 168 [2021-02-23 16:22:23,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:22:23,725 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 206 transitions. [2021-02-23 16:22:23,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:22:23,725 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 206 transitions. [2021-02-23 16:22:23,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-23 16:22:23,728 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:22:23,728 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] [2021-02-23 16:22:23,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:22:23,728 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:22:23,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:22:23,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1149653709, now seen corresponding path program 1 times [2021-02-23 16:22:23,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:22:23,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86132636] [2021-02-23 16:22:23,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:22:23,733 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:22:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:23,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:23,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:23,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:23,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:23,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:23,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:23,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:23,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:23,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:23,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:23,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:23,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:23,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:23,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:23,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:23,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:24,161 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:22:24,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:22:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:24,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:24,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:24,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:24,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:22:24,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:22:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:24,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:24,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:24,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:22:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:24,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:24,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:24,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:22:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:24,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:24,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:24,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:22:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:24,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:24,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:24,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:22:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:24,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:24,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:24,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-23 16:22:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:24,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:24,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:24,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:22:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:24,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:24,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:24,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:24,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:24,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:24,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:24,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-23 16:22:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:24,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:24,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:24,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:22:24,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86132636] [2021-02-23 16:22:24,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:22:24,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 16:22:24,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371459712] [2021-02-23 16:22:24,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 16:22:24,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:22:24,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 16:22:24,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-02-23 16:22:24,363 INFO L87 Difference]: Start difference. First operand 196 states and 206 transitions. Second operand 8 states. [2021-02-23 16:22:24,924 WARN L202 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:22:26,159 WARN L202 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:22:26,561 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:22:27,017 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:22:27,407 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:22:27,773 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:22:28,124 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:22:28,513 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:22:28,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:22:28,839 INFO L93 Difference]: Finished difference Result 373 states and 422 transitions. [2021-02-23 16:22:28,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:22:28,840 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 171 [2021-02-23 16:22:28,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:22:28,844 INFO L225 Difference]: With dead ends: 373 [2021-02-23 16:22:28,844 INFO L226 Difference]: Without dead ends: 292 [2021-02-23 16:22:28,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-02-23 16:22:28,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-02-23 16:22:28,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 267. [2021-02-23 16:22:28,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2021-02-23 16:22:28,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 289 transitions. [2021-02-23 16:22:28,960 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 289 transitions. Word has length 171 [2021-02-23 16:22:28,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:22:28,961 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 289 transitions. [2021-02-23 16:22:28,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 16:22:28,961 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 289 transitions. [2021-02-23 16:22:28,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-23 16:22:28,964 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:22:28,964 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] [2021-02-23 16:22:28,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:22:28,965 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:22:28,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:22:28,965 INFO L82 PathProgramCache]: Analyzing trace with hash -668012141, now seen corresponding path program 1 times [2021-02-23 16:22:28,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:22:28,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435559063] [2021-02-23 16:22:28,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:22:28,969 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:22:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:22:29,038 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:22:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:22:29,106 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:22:29,285 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:22:29,285 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:22:29,286 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:22:29,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:22:29 BoogieIcfgContainer [2021-02-23 16:22:29,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:22:29,312 INFO L168 Benchmark]: Toolchain (without parser) took 16727.14 ms. Allocated memory was 156.2 MB in the beginning and 404.8 MB in the end (delta: 248.5 MB). Free memory was 130.7 MB in the beginning and 304.8 MB in the end (delta: -174.1 MB). Peak memory consumption was 75.2 MB. Max. memory is 8.0 GB. [2021-02-23 16:22:29,313 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 156.2 MB. Free memory is still 130.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:22:29,313 INFO L168 Benchmark]: CACSL2BoogieTranslator took 556.59 ms. Allocated memory is still 156.2 MB. Free memory was 129.5 MB in the beginning and 109.9 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-23 16:22:29,314 INFO L168 Benchmark]: Boogie Preprocessor took 85.25 ms. Allocated memory is still 156.2 MB. Free memory was 109.9 MB in the beginning and 106.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-23 16:22:29,314 INFO L168 Benchmark]: RCFGBuilder took 1389.25 ms. Allocated memory was 156.2 MB in the beginning and 189.8 MB in the end (delta: 33.6 MB). Free memory was 106.1 MB in the beginning and 125.5 MB in the end (delta: -19.5 MB). Peak memory consumption was 27.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:22:29,318 INFO L168 Benchmark]: TraceAbstraction took 14675.47 ms. Allocated memory was 189.8 MB in the beginning and 404.8 MB in the end (delta: 215.0 MB). Free memory was 125.0 MB in the beginning and 304.8 MB in the end (delta: -179.8 MB). Peak memory consumption was 34.6 MB. Max. memory is 8.0 GB. [2021-02-23 16:22:29,320 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 156.2 MB. Free memory is still 130.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 556.59 ms. Allocated memory is still 156.2 MB. Free memory was 129.5 MB in the beginning and 109.9 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 85.25 ms. Allocated memory is still 156.2 MB. Free memory was 109.9 MB in the beginning and 106.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1389.25 ms. Allocated memory was 156.2 MB in the beginning and 189.8 MB in the end (delta: 33.6 MB). Free memory was 106.1 MB in the beginning and 125.5 MB in the end (delta: -19.5 MB). Peak memory consumption was 27.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 14675.47 ms. Allocated memory was 189.8 MB in the beginning and 404.8 MB in the end (delta: 215.0 MB). Free memory was 125.0 MB in the beginning and 304.8 MB in the end (delta: -179.8 MB). Peak memory consumption was 34.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 150]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L226] int pumpRunning = 0; [L227] int systemActive = 1; [L591] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L788] int waterLevel = 1; [L789] int methaneLevelCritical = 0; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L413] int retValue_acc ; [L416] retValue_acc = 1 [L417] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L114] CALL test() [L156] int splverifierCounter ; [L157] int tmp ; [L158] int tmp___0 ; [L159] int tmp___1 ; [L160] int tmp___2 ; [L163] splverifierCounter = 0 [L165] COND TRUE 1 [L167] COND TRUE splverifierCounter < 4 [L173] tmp = __VERIFIER_nondet_int() [L175] COND TRUE \read(tmp) [L177] CALL waterRise() [L806] COND TRUE waterLevel < 2 [L807] waterLevel = waterLevel + 1 [L177] RET waterRise() [L183] tmp___0 = __VERIFIER_nondet_int() [L185] COND FALSE !(\read(tmp___0)) [L193] tmp___2 = __VERIFIER_nondet_int() [L195] COND TRUE \read(tmp___2) [L208] CALL timeShift() [L234] COND FALSE !(\read(pumpRunning)) [L241] COND TRUE \read(systemActive) [L243] FCALL processEnvironment() [L249] CALL __utac_acc__Specification3_spec__1() [L354] int tmp ; [L355] int tmp___0 ; [L356] int tmp___1 ; [L360] CALL, EXPR isMethaneLevelCritical() [L827] int retValue_acc ; [L830] retValue_acc = methaneLevelCritical [L831] return (retValue_acc); [L360] RET, EXPR isMethaneLevelCritical() [L360] tmp = isMethaneLevelCritical() [L362] COND FALSE !(\read(tmp)) [L366] CALL, EXPR getWaterLevel() [L859] int retValue_acc ; [L862] retValue_acc = waterLevel [L863] return (retValue_acc); [L366] RET, EXPR getWaterLevel() [L366] tmp___0 = getWaterLevel() [L368] COND TRUE tmp___0 == 2 [L370] CALL, EXPR isPumpRunning() [L307] int retValue_acc ; [L310] retValue_acc = pumpRunning [L311] return (retValue_acc); [L370] RET, EXPR isPumpRunning() [L370] tmp___1 = isPumpRunning() [L372] COND FALSE !(\read(tmp___1)) [L376] CALL __automaton_fail() [L150] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 596 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 10.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 755 SDtfs, 704 SDslu, 1099 SDs, 0 SdLazy, 1740 SolverSat, 225 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 122 StatesRemovedByMinimization, 4 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...